谁帮我把下面的vc的结构转成delphi呢?赠送50分(50分)

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psynet123

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• 2008-02-20

• #1

void MP4_ServerSetStart(void(CALLBACK *StartCap)(DWORD dwChannel))

 

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psynet123

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• 2008-02-20

• #2

顶

 

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psynet123

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• 2008-02-20

• #3

顶

 

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menzhe

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• 2008-02-20

• #4

USB

 

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白河愁

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• 2008-02-21

• #5

procedure MP4_ServerSetStart(StartCap: Pointer; dwChannel: DWORD);

 

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[xiaopei]

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• 2008-02-21

• #6

//这样。<br>type TStartCaprocedure (dwChannelWORD);stdcall;<br><br>procedure MP4_ServerSetStart(StartCap:TStartCap);<br><br>//调用时只须这样。<br>//先定义一个回调函数_StartCap<br>procedure _StartCap(dwChannelWORD);stdcall;<br>begin<br>&nbsp; ShowMessage('调用了_StartCap函数');<br>&nbsp; ShowMessage(Format('dwChannel的值是：%u',[dwChannel]));<br>end;<br>//然后这样调用就行了<br>MP4_ServerSetStart(_StartCap);

 

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psynet123

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• 2008-02-21

• #7

接受 [xiaopei], &nbsp;的答案,分数会在2008-02-21 12:00转给你,主要的目的是让更多的人知道怎么转,谢谢!!!

 

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psynet123

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• 2008-02-21

• #8

但是现在有个问题, void MP4_ServerSetStart(void(CALLBACK *StartCap)(DWORD dwChannel)) &nbsp; 这个是某dll的函数,现在delphi要调用的话,把你的改成如下的是否可行?<br><br><br>//这样。<br>type TStartCaprocedure (dwChannelWORD);stdcall;<br><br>procedure MP4_ServerSetStart(StartCap:TStartCap); stdcall;external 'XXX.dll';<br><br>//调用时只须这样。<br>//先定义一个回调函数_StartCap<br>procedure _StartCap(dwChannelWORD);stdcall;<br>begin<br>&nbsp; ShowMessage('调用了_StartCap函数');<br>&nbsp; ShowMessage(Format('dwChannel的值是：%u',[dwChannel]));<br>end;<br>//然后这样调用就行了<br>MP4_ServerSetStart(_StartCap);

 

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[xiaopei]

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• 2008-02-21

• #9

改正：<br>procedure MP4_ServerSetStart(StartCap:TStartCap);<br>VC默认调用是cdecl约定。所以上面那一句应该再在后面加一句cdecl关键字才是正确的。<br>procedure MP4_ServerSetStart(StartCap:TStartCap); cdecl;external 'DllName.dll';<br><br>MP4_ServerSetStart函数VC并没有声明为stdcall，所以默认应该是cdecl调用约定。

 

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psynet123

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• 2008-02-21

• #10

好的,再次谢谢

 

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psynet123

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• 2008-02-22

• #11

接受答案了.