subject_62792.htm

vc

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序号：62792 发表者：allair 发表日期：2003-11-28 16:52:01
<br>主题：sos,请问如何禁了alt+tab
<br>内容：sos,请问如何禁了alt+tab
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<font color=red>答案被接受</font><br>回复者：元元 回复日期：2003-12-02 14:38:28
<br>内容：你写一个DLL，设置一个系统级别的钩子，在W2K以后的系统你可以<BR>#pragma data_seg (&#34;.MouseKeystrokeSharedData&#34;)<BR>HHOOK g_hHookKbdLL = NULL; // hook handle<BR>#pragma data_seg ()<BR>HANDLE g_hInst = NULL;<BR><BR>BOOL WINAPI DllMain( HANDLE hModule, DWORD fdwReason, LPVOID lpReserved )<BR>{&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;switch ( fdwReason )<BR>&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;case&nbsp;&nbsp;DLL_PROCESS_ATTACH:<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;g_hInst = hModule;<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;case&nbsp;&nbsp;DLL_PROCESS_DETACH:<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;break;<BR>&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;return&nbsp;&nbsp;TRUE;<BR>}<BR><BR><BR>g_hHookKbdLL = SetWindowsHookEx(WH_KEYBOARD_LL,LowLevelKeyboardProc, g_hInst, 0);<BR>LRESULT CALLBACK LowLevelKeyboardProc(int nCode, WPARAM wParam, LPARAM lParam)<BR>{&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;KBDLLHOOKSTRUCT *pkh = (KBDLLHOOKSTRUCT *) lParam;<BR>&nbsp;&nbsp;&nbsp;&nbsp;<BR>&nbsp;&nbsp;&nbsp;&nbsp;if (nCode==HC_ACTION) <BR>&nbsp;&nbsp;&nbsp;&nbsp;{<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;if(pkh-&gt;vkCode==VK_TAB &amp;&amp; pkh-&gt;flags &amp; LLKHF_ALTDOWN)&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; {<BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;return 1;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; <BR>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp; } <BR>&nbsp;&nbsp;&nbsp;&nbsp;}<BR>&nbsp;&nbsp;&nbsp;&nbsp;return CallNextHookEx(g_hHookKbdLL, nCode, wParam, lParam);<BR>}<BR><BR>在Windows98和ME下只需用API也可以实现<BR>SystemParametersInfo(SPI_SCREENSAVERRUNNING, 1, NULL, 0);<BR>不过此时，Ctrl+Alt+Del也将失去作用,如果要恢复的话，只需<BR>SystemParametersInfo(SPI_SCREENSAVERRUNNING, 0, NULL, 0);就可以了<BR><BR><BR>
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