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PostMessage, PostMessageBynum, PostMessageBystring |
VB声明 |
Declare Function PostMessage& Lib "user32"
Alias "PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As
Long, lParam As Any)
Declare Function PostMessageByNum& Lib "user32" Alias
"PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long,
ByVal lParam As Long)
Declare Function PostMessageByString& Lib "user32" Alias
"PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long,
ByVal lParam As String) |
说明 |
将一条消息投递到指定窗口的消息队列。投递的消息会在Windows事件处理过程中得到处理。在那个时候,会随同投递的消息调用指定窗口的窗口函数。特别适合那些不需要立即处理的窗口消息的发送 |
返回值 |
Long,如消息投递成功,则返回TRUE(非零)。会设置GetLastError |
参数表 |
参数 |
类型及说明 |
hwnd |
Long,接收消息的那个窗口的句柄。如设为HWND_BROADCAST,表示投递给系统中的所有顶级窗口。如设为零,表示投递一条线程消息(参考PostThreadMessage) |
wMsg |
Long,消息标识符 |
wParam |
Long,具体由消息决定 |
lParam |
Any,具体由消息决定 |
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