如何在 delphi 应用程序中, 去关闭外部已开启的应.txt

delphi 编程技巧

如何在 Delphi 应用程序中, 去关闭外部已开启的应用程序？ (2000年7月28日) 

本站更新  分类:   作者:srw  推荐:   阅读次数:840  
(http://www.codesky.net)  

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下面给出一段在 Delphi 中关闭“计算器”程序为例：
...
var
HWndCalculator : HWnd;
begin
// find the exist calculator window
HWndCalculator := Winprocs.FindWindow(nil, '计算器');

// close the exist Calculator }
if HWndCalculator <> 0 then 
SendMessage(HWndCalculator, WM_CLOSE, 0, 0);
end;
在此特意再摘录一段 Win32 SDK 中的说明文字：
Typically, an application sends the WM_CLOSE message before
destroying awindow, giving the window the opportunity to 
prompt the user for confirmation before the window is destroyed.
A window that includes a System menu automatically receives the 
WM_CLOSE message when the user chooses the Close command from 
the menu. If the user confirms that the window should be destroyed,
the application calls DestroyWindow. [END]