Eneboo - Documentación para desarrolladores
|
The QMessageBox class provides a modal dialog with a short message, an icon, and some buttons.. Más...
#include <qmessagebox.h>
Tipos públicos | |
enum | Icon { NoIcon = 0, Information = 1, Warning = 2, Critical = 3, Question = 4, NoIcon = 0, Information = 1, Warning = 2, Critical = 3, Question = 4 } |
enum | { NoButton = 0, Ok = 1, Cancel = 2, Yes = 3, No = 4, Abort = 5, Retry = 6, Ignore = 7, YesAll = 8, NoAll = 9, ButtonMask = 0xff, Default = 0x100, Escape = 0x200, FlagMask = 0x300 } |
enum | Icon { NoIcon = 0, Information = 1, Warning = 2, Critical = 3, Question = 4, NoIcon = 0, Information = 1, Warning = 2, Critical = 3, Question = 4 } |
enum | { NoButton = 0, Ok = 1, Cancel = 2, Yes = 3, No = 4, Abort = 5, Retry = 6, Ignore = 7, YesAll = 8, NoAll = 9, ButtonMask = 0xff, Default = 0x100, Escape = 0x200, FlagMask = 0x300 } |
Métodos públicos | |
QMessageBox (QWidget *parent=0, const char *name=0) | |
QMessageBox (const QString &caption, const QString &text, Icon icon, int button0, int button1, int button2, QWidget *parent=0, const char *name=0, bool modal=TRUE, WFlags f=WStyle_DialogBorder) | |
~QMessageBox () | |
QString | text () const |
void | setText (const QString &) |
Icon | icon () const |
void | setIcon (Icon) |
void | setIcon (const QPixmap &) |
const QPixmap * | iconPixmap () const |
void | setIconPixmap (const QPixmap &) |
QString | buttonText (int button) const |
void | setButtonText (int button, const QString &) |
void | adjustSize () |
TextFormat | textFormat () const |
void | setTextFormat (TextFormat) |
QMessageBox (QWidget *parent=0, const char *name=0) | |
QMessageBox (const QString &caption, const QString &text, Icon icon, int button0, int button1, int button2, QWidget *parent=0, const char *name=0, bool modal=TRUE, WFlags f=WStyle_DialogBorder) | |
~QMessageBox () | |
QString | text () const |
void | setText (const QString &) |
Icon | icon () const |
void | setIcon (Icon) |
void | setIcon (const QPixmap &) |
const QPixmap * | iconPixmap () const |
void | setIconPixmap (const QPixmap &) |
QString | buttonText (int button) const |
void | setButtonText (int button, const QString &) |
void | adjustSize () |
TextFormat | textFormat () const |
void | setTextFormat (TextFormat) |
Métodos públicos estáticos | |
static int | information (QWidget *parent, const QString &caption, const QString &text, int button0, int button1=0, int button2=0) |
static int | information (QWidget *parent, const QString &caption, const QString &text, const QString &button0Text=QString::null, const QString &button1Text=QString::null, const QString &button2Text=QString::null, int defaultButtonNumber=0, int escapeButtonNumber=-1) |
static int | question (QWidget *parent, const QString &caption, const QString &text, int button0, int button1=0, int button2=0) |
static int | question (QWidget *parent, const QString &caption, const QString &text, const QString &button0Text=QString::null, const QString &button1Text=QString::null, const QString &button2Text=QString::null, int defaultButtonNumber=0, int escapeButtonNumber=-1) |
static int | warning (QWidget *parent, const QString &caption, const QString &text, int button0, int button1, int button2=0) |
static int | warning (QWidget *parent, const QString &caption, const QString &text, const QString &button0Text=QString::null, const QString &button1Text=QString::null, const QString &button2Text=QString::null, int defaultButtonNumber=0, int escapeButtonNumber=-1) |
static int | critical (QWidget *parent, const QString &caption, const QString &text, int button0, int button1, int button2=0) |
static int | critical (QWidget *parent, const QString &caption, const QString &text, const QString &button0Text=QString::null, const QString &button1Text=QString::null, const QString &button2Text=QString::null, int defaultButtonNumber=0, int escapeButtonNumber=-1) |
static void | about (QWidget *parent, const QString &caption, const QString &text) |
static void | aboutQt (QWidget *parent, const QString &caption=QString::null) |
static int | message (const QString &caption, const QString &text, const QString &buttonText=QString::null, QWidget *parent=0, const char *=0) |
static bool | query (const QString &caption, const QString &text, const QString &yesButtonText=QString::null, const QString &noButtonText=QString::null, QWidget *parent=0, const char *=0) |
static QPixmap | standardIcon (Icon icon, GUIStyle) |
static QPixmap | standardIcon (Icon icon) |
static int | information (QWidget *parent, const QString &caption, const QString &text, int button0, int button1=0, int button2=0) |
static int | information (QWidget *parent, const QString &caption, const QString &text, const QString &button0Text=QString::null, const QString &button1Text=QString::null, const QString &button2Text=QString::null, int defaultButtonNumber=0, int escapeButtonNumber=-1) |
static int | question (QWidget *parent, const QString &caption, const QString &text, int button0, int button1=0, int button2=0) |
static int | question (QWidget *parent, const QString &caption, const QString &text, const QString &button0Text=QString::null, const QString &button1Text=QString::null, const QString &button2Text=QString::null, int defaultButtonNumber=0, int escapeButtonNumber=-1) |
static int | warning (QWidget *parent, const QString &caption, const QString &text, int button0, int button1, int button2=0) |
static int | warning (QWidget *parent, const QString &caption, const QString &text, const QString &button0Text=QString::null, const QString &button1Text=QString::null, const QString &button2Text=QString::null, int defaultButtonNumber=0, int escapeButtonNumber=-1) |
static int | critical (QWidget *parent, const QString &caption, const QString &text, int button0, int button1, int button2=0) |
static int | critical (QWidget *parent, const QString &caption, const QString &text, const QString &button0Text=QString::null, const QString &button1Text=QString::null, const QString &button2Text=QString::null, int defaultButtonNumber=0, int escapeButtonNumber=-1) |
static void | about (QWidget *parent, const QString &caption, const QString &text) |
static void | aboutQt (QWidget *parent, const QString &caption=QString::null) |
static int | message (const QString &caption, const QString &text, const QString &buttonText=QString::null, QWidget *parent=0, const char *=0) |
static bool | query (const QString &caption, const QString &text, const QString &yesButtonText=QString::null, const QString &noButtonText=QString::null, QWidget *parent=0, const char *=0) |
static QPixmap | standardIcon (Icon icon, GUIStyle) |
static QPixmap | standardIcon (Icon icon) |
Métodos protegidos | |
void | resizeEvent (QResizeEvent *) |
void | showEvent (QShowEvent *) |
void | closeEvent (QCloseEvent *) |
void | keyPressEvent (QKeyEvent *) |
void | styleChanged (QStyle &) |
void | resizeEvent (QResizeEvent *) |
void | showEvent (QShowEvent *) |
void | closeEvent (QCloseEvent *) |
void | keyPressEvent (QKeyEvent *) |
void | styleChanged (QStyle &) |
Propiedades | |
QString | text |
the message box text to be displayed. | |
Icon | icon |
the message box's icon | |
QPixmap | iconPixmap |
the current icon | |
TextFormat | textFormat |
the format of the text displayed by the message box |
The QMessageBox class provides a modal dialog with a short message, an icon, and some buttons.
.
Message boxes are used to provide informative messages and to ask simple questions.
QMessageBox provides a range of different messages, arranged roughly along two axes: severity and complexity.
Severity is qmessagebox-quest.png Question For message boxes that ask a question as part of normal operation. Some style guides recommend using Information for this purpose. qmessagebox-info.png Information For message boxes that are part of normal operation. qmessagebox-warn.png Warning For message boxes that tell the user about unusual errors. qmessagebox-crit.png Critical For message boxes that tell the user about critical errors.
The message box has a different icon for each of the severity levels.
Complexity is one button (OK) for simple messages, or two or even three buttons for questions.
There are static functions for the most common cases.
Examples:
If a program is unable to find a supporting file, but can do perfectly well without it:
QMessageBox::information( this, "Application name", "Unable to find the user preferences file.\n" "The factory default will be used instead." );
question() is useful for simple yes/no questions:
if ( QFile::exists( filename ) && QMessageBox::question( this, tr("Overwrite File? -- Application Name"), tr("A file called %1 already exists." "Do you want to overwrite it?") .arg( filename ), tr("&Yes"), tr("&No"), QString::null, 0, 1 ) ) return false;
warning() can be used to tell the user about unusual errors, or errors which can't be easily fixed:
switch( QMessageBox::warning( this, "Application name", "Could not connect to the <mumble> server.\n" "This program can't function correctly " "without the server.\n\n", "Retry", "Quit", 0, 0, 1 ) ) { case 0: // The user clicked the Retry again button or pressed Enter // try again break; case 1: // The user clicked the Quit or pressed Escape // exit break; }
The text part of all message box messages can be either rich text or plain text. If you specify a rich text formatted string, it will be rendered using the default stylesheet. See QStyleSheet::defaultSheet() for details. With certain strings that contain XML meta characters, the auto-rich text detection may fail, interpreting plain text incorrectly as rich text. In these rare cases, use QStyleSheet::convertFromPlainText() to convert your plain text string to a visually equivalent rich text string or set the text format explicitly with setTextFormat().
Note that the Microsoft Windows User Interface Guidelines recommend using the application name as the window's caption.
Below are more examples of how to use the static member functions. After these examples you will find an overview of the non-static member functions.
Exiting a program is part of its normal operation. If there is unsaved data the user probably should be asked if they want to save the data. For example:
switch( QMessageBox::information( this, "Application name here", "The document contains unsaved changes\n" "Do you want to save the changes before exiting?", "&Save", "&Discard", "Cancel", 0, // Enter == button 0 2 ) ) { // Escape == button 2 case 0: // Save clicked or Alt+S pressed or Enter pressed. // save break; case 1: // Discard clicked or Alt+D pressed // don't save but exit break; case 2: // Cancel clicked or Escape pressed // don't exit break; }
The Escape button cancels the entire exit operation, and pressing Enter causes the changes to be saved before the exit occurs.
Disk full errors are unusual and they certainly can be hard to correct. This example uses predefined buttons instead of hard-coded button texts:
switch( QMessageBox::warning( this, "Application name here", "Could not save the user preferences,\n" "because the disk is full. You can delete\n" "some files and press Retry, or you can\n" "abort the Save Preferences operation.", QMessageBox::Retry | QMessageBox::Default, QMessageBox::Abort | QMessageBox::Escape )) { case QMessageBox::Retry: // Retry clicked or Enter pressed // try again break; case QMessageBox::Abort: // Abort clicked or Escape pressed // abort break; }
The critical() function should be reserved for critical errors. In this example errorDetails is a QString or const char*, and QString is used to concatenate several strings:
QMessageBox::critical( 0, "Application name here", QString("An internal error occurred. Please ") + "call technical support at 1234-56789 and report\n"+ "these numbers:\n\n" + errorDetails + "\n\nApplication will now exit." );
In this example an OK button is displayed.
QMessageBox provides a very simple About box which displays an appropriate icon and the string you provide:
QMessageBox::about( this, "About <Application>", "<Application> is a <one-paragraph blurb>\n\n" "Copyright 1991-2003 Such-and-such. " "<License words here.>\n\n" "For technical support, call 1234-56789 or see\n" "http://www.such-and-such.com/Application/\n" );
See about() for more information.
If you want your users to know that the application is built using Qt (so they know that you use high quality tools) you might like to add an "About Qt" menu option under the Help menu to invoke aboutQt().
If none of the standard message boxes is suitable, you can create a QMessageBox from scratch and use custom button texts:
QMessageBox mb( "Application name here", "Saving the file will overwrite the original file on the disk.\n" "Do you really want to save?", QMessageBox::Information, QMessageBox::Yes | QMessageBox::Default, QMessageBox::No, QMessageBox::Cancel | QMessageBox::Escape ); mb.setButtonText( QMessageBox::Yes, "Save" ); mb.setButtonText( QMessageBox::No, "Discard" ); switch( mb.exec() ) { case QMessageBox::Yes: // save and exit break; case QMessageBox::No: // exit without saving break; case QMessageBox::Cancel: // don't save and don't exit break; }
QMessageBox defines two enum types: Icon and an unnamed button type. Icon defines the Question
, Information
, Warning
, and Critical
icons for each GUI style. It is used by the constructor and by the static member functions question(), information(), warning() and critical(). A function called standardIcon() gives you access to the various icons.
The button types are: Ok - the default for single-button message boxes Cancel - note that this is not automatically Escape Yes No Abort Retry Ignore YesAll NoAll
Button types can be combined with two modifiers by using OR, '|': Default - makes pressing Enter equivalent to clicking this button. Normally used with Ok, Yes or similar. Escape - makes pressing Escape equivalent to clicking this button. Normally used with Abort, Cancel or similar.
The text(), icon() and iconPixmap() functions provide access to the current text and pixmap of the message box. The setText(), setIcon() and setIconPixmap() let you change it. The difference between setIcon() and setIconPixmap() is that the former accepts a QMessageBox::Icon and can be used to set standard icons, whereas the latter accepts a QPixmap and can be used to set custom icons.
setButtonText() and buttonText() provide access to the buttons.
QMessageBox has no signals or slots.
anonymous enum |
anonymous enum |
enum QMessageBox::Icon |
enum QMessageBox::Icon |
This enum has the following values:
NoIcon the message box does not have any icon.
Question an icon indicating that the message is asking a question.
Information an icon indicating that the message is nothing out of the ordinary.
Warning an icon indicating that the message is a warning, but can be dealt with.
Critical an icon indicating that the message represents a critical problem.
QMessageBox::QMessageBox | ( | QWidget * | parent = 0 , |
const char * | name = 0 |
||
) |
Constructs a message box with no text and a button with the label "OK".
If parent is 0, the message box becomes an application-global modal dialog box. If parent is a widget, the message box becomes modal relative to parent.
The parent and name arguments are passed to the QDialog constructor.
QMessageBox::QMessageBox | ( | const QString & | caption, |
const QString & | text, | ||
Icon | icon, | ||
int | button0, | ||
int | button1, | ||
int | button2, | ||
QWidget * | parent = 0 , |
||
const char * | name = 0 , |
||
bool | modal = TRUE , |
||
WFlags | f = WStyle_DialogBorder |
||
) |
Constructs a message box with a caption, a text, an icon, and up to three buttons.
The icon must be one of the following: QMessageBox::NoIcon QMessageBox::Question QMessageBox::Information QMessageBox::Warning QMessageBox::Critical
Each button, button0, button1 and button2, can have one of the following values: QMessageBox::NoButton QMessageBox::Ok QMessageBox::Cancel QMessageBox::Yes QMessageBox::No QMessageBox::Abort QMessageBox::Retry QMessageBox::Ignore QMessageBox::YesAll QMessageBox::NoAll
Use QMessageBox::NoButton for the later parameters to have fewer than three buttons in your message box. If you don't specify any buttons at all, QMessageBox will provide an Ok button.
One of the buttons can be OR-ed with the QMessageBox::Default
flag to make it the default button (clicked when Enter is pressed).
One of the buttons can be OR-ed with the QMessageBox::Escape
flag to make it the cancel or close button (clicked when Escape is pressed).
Example:
QMessageBox mb( "Application Name", "Hardware failure.\n\nDisk error detected\nDo you want to stop?", QMessageBox::Question, QMessageBox::Yes | QMessageBox::Default, QMessageBox::No | QMessageBox::Escape, QMessageBox::NoButton ); if ( mb.exec() == QMessageBox::No ) // try again
If parent is 0, the message box becomes an application-global modal dialog box. If parent is a widget, the message box becomes modal relative to parent.
If modal is TRUE the message box is modal; otherwise it is modeless.
The parent, name, modal, and f arguments are passed to the QDialog constructor.
QMessageBox::~QMessageBox | ( | ) |
Destroys the message box.
QMessageBox::QMessageBox | ( | QWidget * | parent = 0 , |
const char * | name = 0 |
||
) |
QMessageBox::QMessageBox | ( | const QString & | caption, |
const QString & | text, | ||
Icon | icon, | ||
int | button0, | ||
int | button1, | ||
int | button2, | ||
QWidget * | parent = 0 , |
||
const char * | name = 0 , |
||
bool | modal = TRUE , |
||
WFlags | f = WStyle_DialogBorder |
||
) |
QMessageBox::~QMessageBox | ( | ) |
void QMessageBox::about | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text | ||
) | [static] |
Displays a simple about box with caption caption and text text. The about box's parent is parent.
about() looks for a suitable icon in four locations: 1 It prefers parent->icon() if that exists. If not, it tries the top-level widget containing parent. If that fails, it tries the main widget. As a last resort it uses the Information icon.
The about box has a single button labelled "OK".
static void QMessageBox::about | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text | ||
) | [static] |
void QMessageBox::aboutQt | ( | QWidget * | parent, |
const QString & | caption = QString::null |
||
) | [static] |
Displays a simple message box about Qt, with caption caption and centered over parent (if parent is not 0). The message includes the version number of Qt being used by the application.
This is useful for inclusion in the Help menu of an application. See the examples/menu/menu.cpp example.
QApplication provides this functionality as a slot.
static void QMessageBox::aboutQt | ( | QWidget * | parent, |
const QString & | caption = QString::null |
||
) | [static] |
void QMessageBox::adjustSize | ( | ) | [virtual] |
Adjusts the size of the message box to fit the contents just before QDialog::exec() or QDialog::show() is called.
This function will not be called if the message box has been explicitly resized before showing it.
Reimplementado de QWidget.
void QMessageBox::adjustSize | ( | ) | [virtual] |
Adjusts the size of the widget to fit the contents.
Uses sizeHint() if valid (i.e if the size hint's width and height are >= 0), otherwise sets the size to the children rectangle (the union of all child widget geometries).
Reimplementado de QWidget.
Returns the text of the message box button button, or QString::null if the message box does not contain the button.
void QMessageBox::closeEvent | ( | QCloseEvent * | e | ) | [protected, virtual] |
Reimplementado de QDialog.
void QMessageBox::closeEvent | ( | QCloseEvent * | e | ) | [protected, virtual] |
Reimplementado de QDialog.
int QMessageBox::critical | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text, | ||
const QString & | button0Text = QString::null , |
||
const QString & | button1Text = QString::null , |
||
const QString & | button2Text = QString::null , |
||
int | defaultButtonNumber = 0 , |
||
int | escapeButtonNumber = -1 |
||
) | [static] |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Displays a critical error message box with a caption, a text, and 1, 2 or 3 buttons. Returns the number of the button that was clicked (0, 1 or 2).
button0Text is the text of the first button, and is optional. If button0Text is not supplied, "OK" (translated) will be used. button1Text is the text of the second button, and is optional, and button2Text is the text of the third button, and is optional. defaultButtonNumber (0, 1 or 2) is the index of the default button; pressing Return or Enter is the same as clicking the default button. It defaults to 0 (the first button). escapeButtonNumber is the index of the Escape button; pressing Escape is the same as clicking this button. It defaults to -1; supply 0, 1, or 2 to make pressing Escape equivalent to clicking the relevant button.
If parent is 0, the message box becomes an application-global modal dialog box. If parent is a widget, the message box becomes modal relative to parent.
static int QMessageBox::critical | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text, | ||
int | button0, | ||
int | button1, | ||
int | button2 = 0 |
||
) | [static] |
static int QMessageBox::critical | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text, | ||
const QString & | button0Text = QString::null , |
||
const QString & | button1Text = QString::null , |
||
const QString & | button2Text = QString::null , |
||
int | defaultButtonNumber = 0 , |
||
int | escapeButtonNumber = -1 |
||
) | [static] |
int QMessageBox::critical | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text, | ||
int | button0, | ||
int | button1, | ||
int | button2 = 0 |
||
) | [static] |
Opens a critical message box with the caption caption and the text text. The dialog may have up to three buttons. Each of the button parameters, button0, button1 and button2 may be set to one of the following values:
QMessageBox::NoButton QMessageBox::Ok QMessageBox::Cancel QMessageBox::Yes QMessageBox::No QMessageBox::Abort QMessageBox::Retry QMessageBox::Ignore QMessageBox::YesAll QMessageBox::NoAll
If you don't want all three buttons, set the last button, or last two buttons to QMessageBox::NoButton.
One button can be OR-ed with QMessageBox::Default
, and one button can be OR-ed with QMessageBox::Escape
.
Returns the identity (QMessageBox::Ok, or QMessageBox::No, etc.) of the button that was clicked.
If parent is 0, the message box becomes an application-global modal dialog box. If parent is a widget, the message box becomes modal relative to parent.
const QPixmap* QMessageBox::iconPixmap | ( | ) | const |
const QPixmap* QMessageBox::iconPixmap | ( | ) | const |
static int QMessageBox::information | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text, | ||
int | button0, | ||
int | button1 = 0 , |
||
int | button2 = 0 |
||
) | [static] |
static int QMessageBox::information | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text, | ||
const QString & | button0Text = QString::null , |
||
const QString & | button1Text = QString::null , |
||
const QString & | button2Text = QString::null , |
||
int | defaultButtonNumber = 0 , |
||
int | escapeButtonNumber = -1 |
||
) | [static] |
int QMessageBox::information | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text, | ||
const QString & | button0Text = QString::null , |
||
const QString & | button1Text = QString::null , |
||
const QString & | button2Text = QString::null , |
||
int | defaultButtonNumber = 0 , |
||
int | escapeButtonNumber = -1 |
||
) | [static] |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Displays an information message box with caption caption, text text and one, two or three buttons. Returns the index of the button that was clicked (0, 1 or 2).
button0Text is the text of the first button, and is optional. If button0Text is not supplied, "OK" (translated) will be used. button1Text is the text of the second button, and is optional. button2Text is the text of the third button, and is optional. defaultButtonNumber (0, 1 or 2) is the index of the default button; pressing Return or Enter is the same as clicking the default button. It defaults to 0 (the first button). escapeButtonNumber is the index of the Escape button; pressing Escape is the same as clicking this button. It defaults to -1; supply 0, 1 or 2 to make pressing Escape equivalent to clicking the relevant button.
If parent is 0, the message box becomes an application-global modal dialog box. If parent is a widget, the message box becomes modal relative to parent.
Note: If you do not specify an Escape button then if the Escape button is pressed then -1 will be returned. It is suggested that you specify an Escape button to prevent this from happening.
int QMessageBox::information | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text, | ||
int | button0, | ||
int | button1 = 0 , |
||
int | button2 = 0 |
||
) | [static] |
Opens an information message box with the caption caption and the text text. The dialog may have up to three buttons. Each of the buttons, button0, button1 and button2 may be set to one of the following values:
QMessageBox::NoButton QMessageBox::Ok QMessageBox::Cancel QMessageBox::Yes QMessageBox::No QMessageBox::Abort QMessageBox::Retry QMessageBox::Ignore QMessageBox::YesAll QMessageBox::NoAll
If you don't want all three buttons, set the last button, or last two buttons to QMessageBox::NoButton.
One button can be OR-ed with QMessageBox::Default
, and one button can be OR-ed with QMessageBox::Escape
.
Returns the identity (QMessageBox::Ok, or QMessageBox::No, etc.) of the button that was clicked.
If parent is 0, the message box becomes an application-global modal dialog box. If parent is a widget, the message box becomes modal relative to parent.
static int QMessageBox::message | ( | const QString & | caption, |
const QString & | text, | ||
const QString & | buttonText = QString::null , |
||
QWidget * | parent = 0 , |
||
const char * | = 0 |
||
) | [inline, static] |
int QMessageBox::message | ( | const QString & | caption, |
const QString & | text, | ||
const QString & | buttonText = QString::null , |
||
QWidget * | parent = 0 , |
||
const char * | = 0 |
||
) | [inline, static] |
Opens a modal message box directly using the specified parameters.
Please use information(), warning(), question(), or critical() instead.
static bool QMessageBox::query | ( | const QString & | caption, |
const QString & | text, | ||
const QString & | yesButtonText = QString::null , |
||
const QString & | noButtonText = QString::null , |
||
QWidget * | parent = 0 , |
||
const char * | = 0 |
||
) | [inline, static] |
bool QMessageBox::query | ( | const QString & | caption, |
const QString & | text, | ||
const QString & | yesButtonText = QString::null , |
||
const QString & | noButtonText = QString::null , |
||
QWidget * | parent = 0 , |
||
const char * | = 0 |
||
) | [inline, static] |
Queries the user using a modal message box with two buttons. Note that caption is not always shown, it depends on the window manager.
Please use information(), question(), warning(), or critical() instead.
int QMessageBox::question | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text, | ||
const QString & | button0Text = QString::null , |
||
const QString & | button1Text = QString::null , |
||
const QString & | button2Text = QString::null , |
||
int | defaultButtonNumber = 0 , |
||
int | escapeButtonNumber = -1 |
||
) | [static] |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Displays a question message box with caption caption, text text and one, two or three buttons. Returns the index of the button that was clicked (0, 1 or 2).
button0Text is the text of the first button, and is optional. If button0Text is not supplied, "OK" (translated) will be used. button1Text is the text of the second button, and is optional. button2Text is the text of the third button, and is optional. defaultButtonNumber (0, 1 or 2) is the index of the default button; pressing Return or Enter is the same as clicking the default button. It defaults to 0 (the first button). escapeButtonNumber is the index of the Escape button; pressing Escape is the same as clicking this button. It defaults to -1; supply 0, 1 or 2 to make pressing Escape equivalent to clicking the relevant button.
If parent is 0, the message box becomes an application-global modal dialog box. If parent is a widget, the message box becomes modal relative to parent.
Note: If you do not specify an Escape button then if the Escape button is pressed then -1 will be returned. It is suggested that you specify an Escape button to prevent this from happening.
static int QMessageBox::question | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text, | ||
int | button0, | ||
int | button1 = 0 , |
||
int | button2 = 0 |
||
) | [static] |
static int QMessageBox::question | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text, | ||
const QString & | button0Text = QString::null , |
||
const QString & | button1Text = QString::null , |
||
const QString & | button2Text = QString::null , |
||
int | defaultButtonNumber = 0 , |
||
int | escapeButtonNumber = -1 |
||
) | [static] |
int QMessageBox::question | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text, | ||
int | button0, | ||
int | button1 = 0 , |
||
int | button2 = 0 |
||
) | [static] |
Opens a question message box with the caption caption and the text text. The dialog may have up to three buttons. Each of the buttons, button0, button1 and button2 may be set to one of the following values:
QMessageBox::NoButton QMessageBox::Ok QMessageBox::Cancel QMessageBox::Yes QMessageBox::No QMessageBox::Abort QMessageBox::Retry QMessageBox::Ignore QMessageBox::YesAll QMessageBox::NoAll
If you don't want all three buttons, set the last button, or last two buttons to QMessageBox::NoButton.
One button can be OR-ed with QMessageBox::Default
, and one button can be OR-ed with QMessageBox::Escape
.
Returns the identity (QMessageBox::Yes, or QMessageBox::No, etc.) of the button that was clicked.
If parent is 0, the message box becomes an application-global modal dialog box. If parent is a widget, the message box becomes modal relative to parent.
void QMessageBox::resizeEvent | ( | QResizeEvent * | ) | [protected, virtual] |
Reimplementado de QDialog.
void QMessageBox::resizeEvent | ( | QResizeEvent * | ) | [protected, virtual] |
Reimplementado de QDialog.
Sets the text of the message box button button to text. Setting the text of a button that is not in the message box is silently ignored.
void QMessageBox::setIcon | ( | Icon | ) |
void QMessageBox::setIcon | ( | Icon | icon | ) |
void QMessageBox::setIcon | ( | const QPixmap & | pixmap | ) | [virtual] |
Sets the window icon to pixmap.
Reimplementado de QWidget.
void QMessageBox::setIconPixmap | ( | const QPixmap & | pixmap | ) |
void QMessageBox::setIconPixmap | ( | const QPixmap & | ) |
void QMessageBox::setText | ( | const QString & | text | ) |
void QMessageBox::setText | ( | const QString & | ) |
void QMessageBox::setTextFormat | ( | Qt::TextFormat | format | ) |
void QMessageBox::setTextFormat | ( | TextFormat | ) |
void QMessageBox::showEvent | ( | QShowEvent * | e | ) | [protected, virtual] |
Reimplementado de QWidget.
void QMessageBox::showEvent | ( | QShowEvent * | ) | [protected, virtual] |
This event handler can be reimplemented in a subclass to receive widget show events.
Non-spontaneous show events are sent to widgets immediately before they are shown. The spontaneous show events of top-level widgets are delivered afterwards.
Reimplementado de QWidget.
Returns the pixmap used for a standard icon. This allows the pixmaps to be used in more complex message boxes. icon specifies the required icon, e.g. QMessageBox::Information, QMessageBox::Warning or QMessageBox::Critical.
style is unused.
Returns the pixmap used for a standard icon. This allows the pixmaps to be used in more complex message boxes. icon specifies the required icon, e.g. QMessageBox::Question, QMessageBox::Information, QMessageBox::Warning or QMessageBox::Critical.
void QMessageBox::styleChanged | ( | QStyle & | ) | [protected] |
void QMessageBox::styleChanged | ( | QStyle & | ) | [protected] |
QString QMessageBox::text | ( | ) | const |
QString QMessageBox::text | ( | ) | const |
TextFormat QMessageBox::textFormat | ( | ) | const |
TextFormat QMessageBox::textFormat | ( | ) | const |
int QMessageBox::warning | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text, | ||
int | button0, | ||
int | button1, | ||
int | button2 = 0 |
||
) | [static] |
Opens a warning message box with the caption caption and the text text. The dialog may have up to three buttons. Each of the button parameters, button0, button1 and button2 may be set to one of the following values:
QMessageBox::NoButton QMessageBox::Ok QMessageBox::Cancel QMessageBox::Yes QMessageBox::No QMessageBox::Abort QMessageBox::Retry QMessageBox::Ignore QMessageBox::YesAll QMessageBox::NoAll
If you don't want all three buttons, set the last button, or last two buttons to QMessageBox::NoButton.
One button can be OR-ed with QMessageBox::Default
, and one button can be OR-ed with QMessageBox::Escape
.
Returns the identity (QMessageBox::Ok, or QMessageBox::No, etc.) of the button that was clicked.
If parent is 0, the message box becomes an application-global modal dialog box. If parent is a widget, the message box becomes modal relative to parent.
static int QMessageBox::warning | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text, | ||
const QString & | button0Text = QString::null , |
||
const QString & | button1Text = QString::null , |
||
const QString & | button2Text = QString::null , |
||
int | defaultButtonNumber = 0 , |
||
int | escapeButtonNumber = -1 |
||
) | [static] |
int QMessageBox::warning | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text, | ||
const QString & | button0Text = QString::null , |
||
const QString & | button1Text = QString::null , |
||
const QString & | button2Text = QString::null , |
||
int | defaultButtonNumber = 0 , |
||
int | escapeButtonNumber = -1 |
||
) | [static] |
Esta es una función miembro sobrecargada que se suministra por conveniencia. Difiere de la anterior función solamente en los argumentos que acepta. Displays a warning message box with a caption, a text, and 1, 2 or 3 buttons. Returns the number of the button that was clicked (0, 1, or 2).
button0Text is the text of the first button, and is optional. If button0Text is not supplied, "OK" (translated) will be used. button1Text is the text of the second button, and is optional, and button2Text is the text of the third button, and is optional. defaultButtonNumber (0, 1 or 2) is the index of the default button; pressing Return or Enter is the same as clicking the default button. It defaults to 0 (the first button). escapeButtonNumber is the index of the Escape button; pressing Escape is the same as clicking this button. It defaults to -1; supply 0, 1, or 2 to make pressing Escape equivalent to clicking the relevant button.
If parent is 0, the message box becomes an application-global modal dialog box. If parent is a widget, the message box becomes modal relative to parent.
Note: If you do not specify an Escape button then if the Escape button is pressed then -1 will be returned. It is suggested that you specify an Escape button to prevent this from happening.
static int QMessageBox::warning | ( | QWidget * | parent, |
const QString & | caption, | ||
const QString & | text, | ||
int | button0, | ||
int | button1, | ||
int | button2 = 0 |
||
) | [static] |
Icon QMessageBox::icon [read, write] |
the message box's icon
The icon of the message box can be one of the following predefined icons: QMessageBox::NoIcon QMessageBox::Question QMessageBox::Information QMessageBox::Warning QMessageBox::Critical
The actual pixmap used for displaying the icon depends on the current GUI style. You can also set a custom pixmap icon using the QMessageBox::iconPixmap property. The default icon is QMessageBox::NoIcon.
Reimplementado de QWidget.
QPixmap QMessageBox::iconPixmap [read, write] |
the current icon
The icon currently used by the message box. Note that it's often hard to draw one pixmap that looks appropriate in both Motif and Windows GUI styles; you may want to draw two pixmaps.
QString QMessageBox::text [read, write] |
the message box text to be displayed.
The text will be interpreted either as a plain text or as rich text, depending on the text format setting ( QMessageBox::textFormat). The default setting is AutoText
, i.e. the message box will try to auto-detect the format of the text.
The default value of this property is QString::null.
TextFormat QMessageBox::textFormat [read, write] |
the format of the text displayed by the message box
The current text format used by the message box. See the Qt::TextFormat enum for an explanation of the possible options.
The default format is AutoText
.