0516008.htm

VC知识库5_chm_decompile_20040520_210715

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<font size="3">　　{</font>
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<font size="3">　　public:</font>
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<font size="3">　　     virtual BOOL OnSysDynamicDeviceInit();</font> 
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<font size="3">　　     virtual BOOL OnSysDynamicDeviceExit();</font> 
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<font size="3">　　     virtual DWORD OnW32DeviceIoControl(PIOCTLPARAMS pDIOCParams);</font> 
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<font size="3">　　     MyHwInt* pMyIRQ;</font> 
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<font size="3">　　};</font>
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<font size="3">　　class AudcardVM : public VVirtualMachine</font> 
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<font size="3">　　{</font>
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<font size="3">　　public:</font>
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<font size="3">　　   AudcardVM(VMHANDLE hVM);</font> 
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<font size="3">　　};</font>
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<font size="3">　　class AudcardThread : public VThread</font> 
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<font size="3">　　{</font>
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<font size="3">　　  public:</font> 
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<font size="3">　　    AudcardThread(THREADHANDLE hThread);</font> 
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<font size="3">　　};</font>
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<font size="3">　　</font>
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<font size="3">　　②Audcard.cpp</font>
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<font size="3">　　//AUDCARD.cpp - main module for VxD AUDCARD</font> 
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<font size="3">　　#define DEVICE_MAIN</font> 
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<font size="3">　　#include "audcard.h"</font> 
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<font size="3">　　Declare_Virtual_Device(AUDCARD)</font>
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<font size="3">　　#define WM_USER_POSTVXD     0x1000　　//自定义消息</font>
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<font size="3">　　#undef DEVICE_MAIN</font> 
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<font size="3">　　AudcardVM::AudcardVM(VMHANDLE hVM) : VVirtualMachine(hVM) {}</font> 
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<font size="3">　　AudcardThread::AudcardThread(THREADHANDLE hThread) : VThread(hThread) {}</font> 
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<font size="3">　　BOOL AudcardDevice::OnSysDynamicDeviceInit() //动态加载时初始化</font> 
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<font size="3">　　{</font>
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<font size="3">　　     ......//硬件初始化</font> 
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<font size="3">　　     pMyIRQ=new MyHwInt();</font> 
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<font size="3">　　if(pMyIRQ&&pMyIRQ->hook())  //挂接中断</font> 
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<font size="3">　　{</font>
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<font size="3">　　 pMyIRQ->physicalUnmask();  //允许中断</font> 
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<font size="3">　　      return TRUE;</font> 
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<font size="3">　　     }</font> 
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<font size="3">　　     else return FALSE;</font> 
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<font size="3">　　}</font>
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<font size="3">　　BOOL AudcardDevice::OnSysDynamicDeviceExit()</font> 
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<font size="3">　　//动态卸载过程</font>
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<font size="3">　　{</font>
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<font size="3">　　     delete pMyIRQ;</font> 
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<font size="3">　　     return TRUE;</font> 
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<font size="3">　　}</font>
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<font size="3">　　DWORD AudcardDevice::OnW32DeviceIoControl(PIOCTLPARAMS pDIOCParams)</font> 
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<font size="3">　　//与Win32应用程序的接口函数</font>  
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<font size="3">　　{</font>
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<font size="3">　　......</font>
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<font size="3">　　}</font>
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<font size="3">　　VOID MyHwInt::OnHardwareInt(VMHANDLE hVM)</font> 
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<font size="3">　　{</font>
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<font size="3">　　  ...... // 中断处理</font> 
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<font size="3">　　  SHELL_PostMessage(AppWnd,WM_USER_POSTVXD ,0,0,0,NULL);</font> 
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<font size="3">　　  //向应用程序窗口发送消息</font> 
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<font size="3">　　  sendPhysicalEOI(); //通知VPICD中断结束</font> 
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<font size="3">　　}</font> 
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