SendMessage

SendMessage, SendMessageBynum, SendMessageByString

VB声明

Declare Function SendMessage& Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any)

Declare Function SendMessageBynum& Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As Long)

Declare Function SendMessageByString& Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, ByVal lParam As String)

说明

调用一个窗口的窗口函数，将一条消息发给那个窗口。除非消息处理完毕，否则该函数不会返回。SendMessageBynum， SendMessageByString是该函数的“类型安全”声明形式

返回值

Long，由具体的消息决定

参数表

参数

类型及说明

hwnd

Long，要接收消息的那个窗口的句柄

wMsg

Long，消息的标识符

wParam

Long，具体取决于消息

lParam

Any，具体取决于消息

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