VC中过程LRESULT CALLBACK MainWndProc(HWND hWnd, UINT message,WPARAM wParam, LPARAM

I

ISY

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• 2002-11-19

• #1

VC中过程LRESULT CALLBACK MainWndProc(HWND hWnd, UINT message,WPARAM wParam, LPARAM lParam)在delphi中应该怎么写？问题很多分不多了，所以省着用，见谅了。(50分)<br />VC中过程
LRESULT CALLBACK MainWndProc(HWND hWnd, UINT message,WPARAM wParam, LPARAM lParam)
{
......
return DefWindowProc (hWnd, message, wParam, lParam);
}
在lelphi中怎么写？主要是“LRESULT CALLBACK”的问题。谢谢。

 

Z

zw84611

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• 2002-11-19

• #2

function MainWndProc(Wnd: HWND
message: UINT;wParam:WPARAM
lParam:LPARAM ): LRESULT
stdcall;

 

J

jsxjd

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• 2002-11-19

• #3

CALLBACK Use in place of FAR PASCAL in application callback routines such as window procedures and dialog procedures.

LRESULT A 32-bit value returned from a window procedure or callback function.

 

I

ISY

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• 2002-11-19

• #4

两位老师，如果前面是PASCAL呢？这个pascal起什么作用呢？
实在是太感谢了，50分实在是对不起啊。

 

J

jsxjd

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• 2002-11-19

• #5

应该是 pascal 调用规则，所以 stdcall
按理说不应该写。
你可以写、不写都试试。

function MainWndProc(Wnd: HWND
message: UINT;wParam:WPARAM
lParam:LPARAM ): LRESULT
stdcall;
function MainWndProc(Wnd: HWND
message: UINT;wParam:WPARAM
lParam:LPARAM ): LRESULT;


因为在VC中 winapi 可以通过以下重定义：

#define WINAPI __stdcall

 

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ISY

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• 2002-11-20

• #6

谢谢两位了，特别是jsxjd老师