?? sendmessage.htm
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<td width="100%" height="16">SendMessage, SendMessageBynum, SendMessageByString</td>
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<td width="100%" colspan="2">VB聲明</td>
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<td width="100%" colspan="2">Declare Function SendMessage& Lib "user32"
Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As
Long, lParam As Any)<br>
Declare Function SendMessageBynum& Lib "user32" Alias
"SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long,
ByVal lParam As Long)<br>
Declare Function SendMessageByString& Lib "user32" Alias
"SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long,
ByVal lParam As String)</td>
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<td width="100%" colspan="2">說明</td>
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<td width="100%" colspan="2">調用一個窗口的窗口函數，將一條消息發給那個窗口。除非消息處理完畢，否則該函數不會返回。SendMessageBynum，
SendMessageByString是該函數的“類型安全”聲明形式</td>
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<td width="100%" colspan="2">返回值</td>
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<td width="100%" colspan="2">Long，由具體的消息決定</td>
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<td width="100%" colspan="2">參數表</td>
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<td width="25%">參數</td>
<td width="75%">類型及說明</td>
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<td width="25%">hwnd</td>
<td width="75%">Long，要接收消息的那個窗口的句柄</td>
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<td width="25%">wMsg</td>
<td width="75%">Long，消息的標識符</td>
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<td width="25%">wParam</td>
<td width="75%">Long，具體取決于消息</td>
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<td width="25%">lParam</td>
<td width="75%">Any，具體取決于消息</td>
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<td width="100%"><p align="right">Top</td>
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