MessageBox()方法使用

 MessageBox (NULL, TEXT ("Hello World"), TEXT ("Hello2"), MB_OK);

MessageBox函数原型如下：
int MessageBox (HWND hWnd, LPCTSTR lpText, LPCTSTR lpCaption, UINT uType);
第1个参数是顶层窗口的句柄，它是消息窗口的父窗口。目前我们把这个参数置为NULL，因为Hello2还没有任何其它窗口。第2个参数是准备显示在窗口里的文字。注意传入的字符串是用TEXT宏包裹的，确保它能够编译成Unicode版本。第3个参数lpCaption是显示在窗口标题栏的文字。最后一个参数uType是一系列标志位，规定消息框如何显示在屏幕上。标志位规定了消息框中按扭的数量和类型，规定了图标的类型以及消息框窗口的风格设置。

表1-1列出了Windows CE下有效的标志位
表1-1: 默认标志位

 

标志位                                                                       按钮或者图标
 
用于按钮

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MB_OK                                                                       OK
 

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MB_OKCANCEL                                                              OK and Cancel
 

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MB_RETRYCANCEL                                                         Retry and Cancel
 

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MB_YESNO                                                                   Yes and No
 

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MB_YESNOCANCEL                                                         Yes, No, and Cancel
 

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MB_ABORTRETRYIGNORE                                                Abort, Retry, and Ignore
 

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用于图标
  

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MB_ICONEXCLAMATION, MB_ICONWARNING                         Exclamation point

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MB_ICONINFORMATION, MB_ICONASTERISK                         Lower case i within a circle

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MB_ICONQUESTION                                                          Question mark
 

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MB_YESNO                                                                 Yes and No

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MB_ICONSTOP, MB_ICONERROR, MB_ICONHAND                Stop sign
 

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MB_DEFBUTTON1                                                         First button
 

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MB_DEFBUTTON2                                                        Second button
 

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MB_DEFBUTTON3                                                       Third button
 

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For Window Styles: 
  

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MB_SETFOREGROUND                                                    Bring the message box to the foreground.
 

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MB_TOPMOST                                                                Make the message box the topmost window.
 

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MessageBox的返回值指出用户按了哪个按扭。

返回值如下：

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IDOK                                      OK button pressed
 

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IDYES                                    Yes button pressed
 

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IDNO                                    No button pressed

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IDCANCEL                              Cancel button pressed or Esc key pressed

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IDABORT                                 Abort button pressed
 

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IDRETRY                                Retry button pressed
 

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IDIGNORE                              Ignore button pressed