列举Ezusb

1万 · 2016-5-5 22:23

我仿照Cypress的控制面板写一个程序把所有Ezusb都列举出来我的代码如下：
bool TForm1::bOpenDriver(HANDLE * phDeviceHandle, char * devname)
{
            //TODO: Add your source code here
            char completeDeviceName[64] = " ";
            char pcMsg[64] = " ";
            strcat(completeDeviceName,devname);
            *phDeviceHandle = CreateFile( completeDeviceName,
                                                                        GENERIC_WRITE,
                                                                        FILE_SHARE_WRITE,
                                                                        NULL,
                                                                        OPEN_EXISTING,
                                                                        0,
                                                                        NULL);
            if(*phDeviceHandle == INVALID_HANDLE_VALUE)
            {
                     return false;
            }
            else
            {
                     return true;
            }

}
列举函数在下面：
void TForm1::OnFileUpdataAllDevs(void)
{
            //TODO: Add your source code here
            int i=0;
            HANDLE hDevice = NULL;
            char pcDriverName[MAX_DRIVER_NAME] = " ";
            m_strUSBDevs = " ";
            for(i = 0;i < MAX_USB_DEV_NUMBER;i++)
            {
                  sprintf(pcDriverName, "Ezusb-%d ",i);
                  if(bOpenDriver(&hDevice,pcDriverName) == true)
                  {
                        m_strUSBDevs += pcDriverName;
                        m_strUSBDevs += "\n ";
                        Edit1-> Text = m_strUSBDevs;
                        CloseHandle(hDevice);
                  }
            }
}