📄 sendmessage.htm
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<title>SendMessage</title>
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<td width="100%" height="16">SendMessage, SendMessageBynum, SendMessageByString</td>
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<td width="100%" colspan="2">VB声明</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">说明</td>
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<td width="100%" colspan="2">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</td>
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<td width="100%" colspan="2">返回值</td>
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<td width="100%" colspan="2">Long，由具体的消息决定</td>
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<td width="100%" colspan="2">参数表</td>
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<td width="25%">参数</td>
<td width="75%">类型及说明</td>
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<td width="25%">hwnd</td>
<td width="75%">Long，要接收消息的那个窗口的句柄</td>
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<td width="25%">wMsg</td>
<td width="75%">Long，消息的标识符</td>
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<td width="25%">wParam</td>
<td width="75%">Long，具体取决于消息</td>
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<td width="25%">lParam</td>
<td width="75%">Any，具体取决于消息</td>
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<td width="100%"><p align="right">Top</td>
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