📄 postmessage.htm
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<td width="100%" height="16">PostMessage, PostMessageBynum, PostMessageBystring</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 PostMessage& Lib "user32"
Alias "PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As
Long, lParam As Any)<br>
Declare Function PostMessageByNum& Lib "user32" Alias
"PostMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long,
ByVal lParam As Long)<br>
Declare Function PostMessageByString& Lib "user32" Alias
"PostMessageA" (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">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</td>
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<td width="100%" colspan="2">返回值</td>
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<td width="100%" colspan="2">Long，如消息投递成功，则返回TRUE（非零）。会设置<a
href="GetLastError.htm">GetLastError</a></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，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<a
href="PostThreadMessage.htm">PostThreadMessage</a>）</td>
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<td width="25%">wMsg</td>
<td width="75%">Long，消息标识符</td>
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<td width="25%">wParam</td>
<td width="75%">Long，具体由消息决定</td>
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<td width="25%">lParam</td>
<td width="75%">Any，具体由消息决定</td>
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