SendMessage

SendMessage, SendMessageBynum, SendMessageByString

VB聲明

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)

說(shuō)明

調(diào)用一個(gè)窗口的窗口函數(shù)，將一條消息發(fā)給那個(gè)窗口。除非消息處理完畢，否則該函數(shù)不會(huì)返回。SendMessageBynum， SendMessageByString是該函數(shù)的“類(lèi)型安全”聲明形式

返回值

Long，由具體的消息決定

參數(shù)表

參數(shù)

類(lèi)型及說(shuō)明

hwnd

Long，要接收消息的那個(gè)窗口的句柄

wMsg

Long，消息的標(biāo)識(shí)符

wParam

Long，具體取決于消息

lParam

Any，具體取決于消息

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