information
QMessageBox::information(NULL, "Title","Content",QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes);
這是比較常用的一種用法,效果如下:
information原型:
StandardButton QMessageBox::information(QWidget * parent, const QString & title, const QString & text, StandardButtons buttons = Ok, StandardButton defaultButton = NoButton) [static]
- 第一個參數是父控件指針
- 第二個參數是標題
- 第三個參數是內容
- 第四個參數是窗口里面要多少個按鈕(默認為OK)
- 第五個參數指定按下Enter時使用的按鈕。(默認為NoButton,此時QMessageBox會自動選擇合適的默認值。)
示例1:
QMessageBox::information(NULL, "Title", "Content");
此時第四第五為默認參數,效果:
示例2:
QMessageBox::information(NULL, "Title", "Content",QMessageBox::Yes|QMessageBox::No);
此時效果(與圖1相同):
示例三:
QMessageBox::information(NULL, "Title","Content",QMessageBox::Yes|QMessageBox::No| QMessageBox::Abort);
添加多個按鈕用|運算符連接,效果:
按鈕類型參考:
1 enum StandardButton { 2 // keep this in sync with QDialogButtonBox::StandardButton
3 NoButton = 0x00000000, 4 Ok = 0x00000400, 5 Save = 0x00000800, 6 SaveAll = 0x00001000, 7 Open = 0x00002000, 8 Yes = 0x00004000, 9 YesToAll = 0x00008000, 10 No = 0x00010000, 11 NoToAll = 0x00020000, 12 Abort = 0x00040000, 13 Retry = 0x00080000, 14 Ignore = 0x00100000, 15 Close = 0x00200000, 16 Cancel = 0x00400000, 17 Discard = 0x00800000, 18 Help = 0x01000000, 19 Apply = 0x02000000, 20 Reset = 0x04000000, 21 RestoreDefaults = 0x08000000, 22
23 FirstButton = Ok, // internal
24 LastButton = RestoreDefaults, // internal
25
26 YesAll = YesToAll, // obsolete
27 NoAll = NoToAll, // obsolete
28
29 Default = 0x00000100, // obsolete
30 Escape = 0x00000200, // obsolete
31 FlagMask = 0x00000300, // obsolete
32 ButtonMask = ~FlagMask // obsolete
33 };
會創建消息提示框后,我們怎么知道用戶點了什么呢,看如下小例子:
1 QMessageBox:: StandardButton result= QMessageBox::information(NULL, "Title", "Content",QMessageBox::Yes|QMessageBox::No); 2 switch (result) 3 { 4 case QMessageBox::Yes: 5 qDebug()<<"Yes"; 6 break; 7 case QMessageBox::No: 8 qDebug()<<"NO"; 9 break; 10 default: 11 break; 12 }
critical
critical adj. 關鍵的; 批評的,愛挑剔的; 嚴重的; 極重要的;
QMessageBox::critical(NULL, "critical", "Content", QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes);
效果:
warning
QMessageBox::warning(NULL, "warning", "Content", QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes);
效果:
question
QMessageBox::question(NULL, "question", "Content", QMessageBox::Yes | QMessageBox::No, QMessageBox::Yes);
效果:
about
原型:static void about(QWidget *parent, const QString &title, const QString &text);
QMessageBox::about(NULL, "About", "by hjwblog.com");
效果: