subject_35943.htm

一些关于vc的问答

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序号：35943 发表者：xiangshifu 发表日期：2003-04-10 15:50:19
<br>主题：郁闷！这一份代码在XP下可以运行，但在9X下有问题！！
<br>内容：这是我写的一份钩子代码！！在XP下可以运行，但在9X下有问题！！那位仁兄提示提示！！<BR>CHookdllApp theApp;<BR>HHOOK hCallWndprocRetHook=NULL;<BR>CWPRETSTRUCT *pCwpRetstruct;<BR>DWORD&nbsp;&nbsp;&nbsp;&nbsp;dwStyle=0;<BR>/////////////////////////////////////////////////////////////////////////////<BR>// CHookdllApp initialization<BR><BR>LRESULT CALLBACK CallWndRetProc(int nCode, WPARAM wParam, LPARAM lParam) <BR>{ <BR>&nbsp;&nbsp;&nbsp;&nbsp;LRESULT RetVal=CallNextHookEx(hCallWndprocRetHook, nCode,&nbsp;&nbsp;wParam, lParam); <BR>&nbsp;&nbsp;&nbsp;&nbsp;if (nCode &lt; 0) // do not process message <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return RetVal;<BR>&nbsp;&nbsp;&nbsp;&nbsp;pCwpRetstruct=(CWPRETSTRUCT *)lParam;<BR>&nbsp;&nbsp;&nbsp;&nbsp;if(WM_GETTEXT==pCwpRetstruct-&gt;message)<BR>&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;dwStyle=GetWindowLong(pCwpRetstruct-&gt;hwnd,GWL_STYLE);<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if(dwStyle&amp;ES_PASSWORD)<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;//问题在这里,我始终不能把 pCwpstruct-&gt;lParam 的内容读出来!<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;::WritePrivateProfileString("fs","fsfg",(LPCTSTR)(pCwpRetstruct-&gt;lParam),"d:\\output\\d.ini");<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;&nbsp;return RetVal;<BR>}<BR><BR>bool installhooker()<BR>{<BR>&nbsp;&nbsp;&nbsp;&nbsp;//安装消息钩子<BR>&nbsp;&nbsp;&nbsp;&nbsp;hCallWndprocRetHook = SetWindowsHookEx(WH_CALLWNDPROCRET,CallWndRetProc,theApp.m_hInstance,0);<BR>&nbsp;&nbsp;&nbsp;&nbsp;if(hCallWndprocRetHook==NULL)return 0;<BR>&nbsp;&nbsp;&nbsp;&nbsp;::AfxMessageBox("fs");<BR>&nbsp;&nbsp;&nbsp;&nbsp;return 1;<BR>}
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<font color=red>答案被接受</font><br>回复者：FirstHoward 回复日期：2003-04-29 22:56:48
<br>内容：The WritePrivateProfileString function copies a string into the specified section of an initialization file. <BR><BR>Note&nbsp;&nbsp;This function is provided only for compatibility with 16-bit versions of Windows. Applications should store initialization information in the registry<BR>
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