📄 bcb_a16.htm
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<p class="MsoNormal"><font color="#000000">static HHOOK hKeyHook;</font></p>
<p class="MsoNormal"><font color="#000000">FARPROC lpfnKeyHook=(FARPROC)KeyHook;</font></p>
<p class="MsoNormal"><font color="#000000">BOOL HookStates=FALSE;</font></p>
<p class="MsoNormal"><font color="#000000">int FAR PASCAL LibMain(</font></p>
<p class="MsoNormal"><font color="#000000">HANDLE hModule,</font></p>
<p class="MsoNormal"><font color="#000000">UINT wDataSeg,</font></p>
<p class="MsoNormal"><font color="#000000">UINT cbHeapSize,</font></p>
<p class="MsoNormal"><font color="#000000">LPSTR lpszCmdLine)</font></p>
<p class="MsoNormal"><font color="#000000">{</font></p>
<p class="MsoNormal"><font color="#000000">if (cbHeapSize!=0) UnlockData(0);</font></p>
<p class="MsoNormal"><font color="#000000">hInstance = hModule;</font></p>
<p class="MsoNormal"><font color="#000000">return 1;</font></p>
<p class="MsoNormal"><font color="#000000">}</font></p>
<p class="MsoNormal"><font color="#000000">int WINAPI WEP (int bSystemExit)</font></p>
<p class="MsoNormal"><font color="#000000">{ return 1;}</font></p>
<p class="MsoNormal"><font color="#000000">int WINAPI InitHooksDll(HWND hwndMainWindow)</font></p>
<p class="MsoNormal"><font color="#000000">{ hWndMain = hwndMainWindow;</font></p>
<p class="MsoNormal"><font color="#000000">InitCalled = 1;</font></p>
<p class="MsoNormal"><font color="#000000">return (0);</font></p>
<p class="MsoNormal"><font color="#000000">}</font></p>
<p class="MsoNormal"><font color="#000000">int WINAPI InstallFilter(BOOL nCode)</font></p>
<p class="MsoNormal"><font color="#000000">{ if (InitCalled==0) return (-1);</font></p>
<p class="MsoNormal"><font color="#000000">if (nCode==TRUE) {</font></p>
<p class="MsoNormal"><font color="#000000">hKeyHook=SetWindowsHookEx(WH_KEYBOARD,</font></p>
<p class="MsoNormal"><font color="#000000">(HOOKPROC)lpfnKeyHook,hInstance,0);</font></p>
<p class="MsoNormal"><font color="#000000">HookStates=TRUE;</font></p>
<p class="MsoNormal"><font color="#000000">} else {</font></p>
<p class="MsoNormal"><font color="#000000">UnhookWindowsHookEx(hKeyHook);</font></p>
<p class="MsoNormal"><font color="#000000">HookStates=FALSE;</font></p>
<p class="MsoNormal"><font color="#000000">}</font></p>
<p class="MsoNormal"><font color="#000000">return(0);</font></p>
<p class="MsoNormal"><font color="#000000">}</font></p>
<p class="MsoNormal"><font color="#000000">LRESULT CALLBACK KeyHook(int nCode,WORD wParam,DWORD
lParam)</font></p>
<p class="MsoNormal"><font color="#000000">{</font></p>
<p class="MsoNormal"><font color="#000000">static BOOL msflag=FALSE;</font></p>
<p class="MsoNormal"><font color="#000000">if(nCode>=0) {</font></p>
<p class="MsoNormal"><font color="#000000">if(HookStates==TRUE){</font></p>
<p class="MsoNormal"><font color="#000000">if((wParam==0xff)|| //WIN3.X<span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:"Times New Roman"">下按键值</span></font></p>
<p class="MsoNormal"><font color="#000000">(wParam==0x5b)||(wParam==0x5c)){//WIN95<span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:"Times New Roman"">下按键值</span></font></p>
<p class="MsoNormal"><font color="#000000">if((i==0x15b)||(i==0x15c)){ //<span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:"Times New Roman"">按键按下处理</span></font></p>
<p class="MsoNormal"><font color="#000000">msflag=TRUE;</font></p>
<p class="MsoNormal"><font color="#000000">PostMessage(hWndMain,0x7fff,0x1,0x3L);</font></p>
<p class="MsoNormal"><font color="#000000">} else if((i==0xc15b)||(i==0xc15c)){//<span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:"Times New Roman"">按键抬起处理</span></font></p>
<p class="MsoNormal"><font color="#000000">msflag=FALSE;</font></p>
<p class="MsoNormal"><font color="#000000">PostMessage(hWndMain,0x7fff,0x2,0x3L);</font></p>
<p class="MsoNormal"><font color="#000000">}</font></p>
<p class="MsoNormal"><font color="#000000">}</font></p>
<p class="MsoNormal"><font color="#000000">}</font></p>
<p class="MsoNormal"><font color="#000000">}</font></p>
<p class="MsoNormal"><font color="#000000">return((int)CallNextHookEx(hKeyHook,nCode,wParam,lParam));</font></p>
<p class="MsoNormal"><font color="#000000">}</font></p>
<p class="MsoNormal"><span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:
"Times New Roman""><font color="#000000">该程序的主要功能是监控键盘按键消息，将两个特殊按键</font></span><font color="#000000">Micro<span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:"Times New Roman"">按下和抬起消息转换</span></font></p>
<p class="MsoNormal"><span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:
"Times New Roman""><font color="#000000">成自定义类型的消息，并将自定义消息发送给应用程序主窗口函数。</font></span></p>
<p class="MsoNormal"><font color="#000000"><span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:
"Times New Roman"">２、在应用程序主函数中建立窗口后，调用</span>InitHooksDll()<span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:"Times New Roman"">函数来初始化动态链接</span></font></p>
<p class="MsoNormal"><font color="#000000"><span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:
"Times New Roman"">库，并将应用程序主窗口句柄传递给链接库，然后调用</span>InstallFilter()<span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:"Times New Roman"">函数挂接键</span></font></p>
<p class="MsoNormal"><span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:
"Times New Roman""><font color="#000000">盘事件监控回调函数。</font></span></p>
<p class="MsoNormal"><font color="#000000">InitHooksDll(hIMEWnd); //<span lang="ZH-CN" style="font-family:
宋体;mso-ascii-font-family:"Times New Roman"">初始化</span>DLL</font></p>
<p class="MsoNormal"><font color="#000000">InstallFilter(TRUE); //<span lang="ZH-CN" style="font-family:
宋体;mso-ascii-font-family:"Times New Roman"">安装键盘回调函数</span></font></p>
<p class="MsoNormal"><font color="#000000"><span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:
"Times New Roman"">３、在应用程序主窗口函数处理自定义消息时，保存</span>Micro<span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:"Times New Roman"">按键的状态，供组合按键</span></font></p>
<p class="MsoNormal"><span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:
"Times New Roman""><font color="#000000">处理时判断使用。</font></span></p>
<p class="MsoNormal"><font color="#000000">switch (iMessage) {</font></p>
<p class="MsoNormal"><font color="#000000">case 0x7fff: //<span lang="ZH-CN" style="font-family:宋体;
mso-ascii-font-family:"Times New Roman"">自定义消息类型</span></font></p>
<p class="MsoNormal"><font color="#000000">if(lParam==0x3L){//<span lang="ZH-CN" style="font-family:宋体;
mso-ascii-font-family:"Times New Roman"">设置</span>Micro<span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:"Times New Roman"">键的状态</span></font></p>
<p class="MsoNormal"><font color="#000000">if(wParam==0x1) MicroFlag=TRUE;</font></p>
<p class="MsoNormal"><font color="#000000">else if(wParam==0x2) MicroFlag=FALSE;</font></p>
<p class="MsoNormal"><font color="#000000">}</font></p>
<p class="MsoNormal"><font color="#000000">break;</font></p>
<p class="MsoNormal"><span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:
"Times New Roman""><font color="#000000">４、在进行按键组合处理时，首先判断</font></span><font color="#000000">Micro<span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:"Times New Roman"">键是否按下，然后再进行其它按键的判</span></font></p>
<p class="MsoNormal"><span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:
"Times New Roman""><font color="#000000">断处理。</font></span></p>
<p class="MsoNormal"><font color="#000000">case WM_KEYDOWN: // <span lang="ZH-CN" style="font-family:
宋体;mso-ascii-font-family:"Times New Roman"">按键按下处理</span></font></p>
<p class="MsoNormal"><font color="#000000">if(MicroFlag==TRUE){//Micro<span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:"Times New Roman"">键按下</span></font></p>
<p class="MsoNormal"><font color="#000000">if((BYTE)HIBYTE(wParam)==0x5b){</font></p>
<p class="MsoNormal"><font color="#000000">//Micro+"["<span lang="ZH-CN" style="font-family:
宋体;mso-ascii-font-family:"Times New Roman"">组合键</span></font></p>
<p class="MsoNormal"><font color="#000000">......//<span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:
"Times New Roman"">按键功能处理</span></font></p>
<p class="MsoNormal"><font color="#000000">} else if((BYTE)HIBYTE(wParam)==0x5d){</font></p>
<p class="MsoNormal"><font color="#000000">//Micro+"]"<span lang="ZH-CN" style="font-family:
宋体;mso-ascii-font-family:"Times New Roman"">组合键</span></font></p>
<p class="MsoNormal"><font color="#000000">......//<span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:
"Times New Roman"">按键功能处理</span></font></p>
<p class="MsoNormal"><font color="#000000">}</font></p>
<p class="MsoNormal"><font color="#000000">}</font></p>
<p class="MsoNormal"><font color="#000000">break;</font></p>
<p class="MsoNormal"><span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:
"Times New Roman""><font color="#000000">５、当应用程序退出时应注意下载键盘监控函数，即调用</font></span><font color="#000000">InstallFilter(FALSE)<span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:"Times New Roman"">函</span></font></p>
<p class="MsoNormal"><span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:
"Times New Roman""><font color="#000000">数一次。</font></span></p>
<p class="MsoNormal"><span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:
"Times New Roman""><font color="#000000">６、利用本文提供的方法设置自己的应用程序功能按键，在保证程序功能按键不会</font></span></p>
<p class="MsoNormal"><span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:
"Times New Roman""><font color="#000000">与其它系统发生冲突的同时，有效地利用了系统中现有资源，而且在实现应用程序</font></span></p>
<p class="MsoNormal"><span lang="ZH-CN" style="font-family:宋体;mso-ascii-font-family:
"Times New Roman""><font color="#000000">功能的同时灵活应用了系统中提供的各种功能调用。</font></span></p>
<p class="MsoNormal"></p>
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