利用消息检测移动磁盘插入

获取磁盘类型的简单方法是GetDriveType但他有一个弊端，针对U盘可以获取，但移动硬盘的识别类型和本地磁盘相同。

使用消息方式获取可以解决这个问题。代码是从一个U盘小偷改出来的。

#include <windows.h> #include <Dbt.h> TCHAR U[2];//保存U盘的盘符 TCHAR FirstDriveFromMask(ULONG unitmask) { char i; for (i = 0; i < 26; ++i) { if (unitmask & 0x1)//看该驱动器的状态是否发生了变化 break; unitmask = unitmask >> 1; } return (i + 'A'); } LRESULT OnDeviceChange(HWND hwnd,WPARAM wParam, LPARAM lParam) { PDEV_BROADCAST_HDR lpdb = (PDEV_BROADCAST_HDR)lParam; if (wParam==DBT_DEVICEARRIVAL) { if (lpdb -> dbch_devicetype == DBT_DEVTYP_VOLUME) { PDEV_BROADCAST_VOLUME lpdbv = (PDEV_BROADCAST_VOLUME)lpdb; U[0]=FirstDriveFromMask(lpdbv ->dbcv_unitmask);//得到u盘盘符 MessageBox(0,U,"Notice!",MB_OK); } } if (wParam==DBT_DEVICEREMOVECOMPLETE) { //设备删除 } return LRESULT(); } LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam,LPARAM lParam) { switch(message) { case WM_DEVICECHANGE: OnDeviceChange(hwnd,wParam,lParam); return 0; case WM_DESTROY: PostQuitMessage(0); return 0; } return DefWindowProc(hwnd, message, wParam, lParam); } int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow) { static TCHAR szAppName[]=TEXT ("UUUUUU"); HWND hwnd; MSG msg; WNDCLASS wndclass; wndclass.style =0; wndclass.lpfnWndProc =WndProc; wndclass.cbClsExtra =0; wndclass.cbWndExtra =0; wndclass.hInstance =hInstance; wndclass.hIcon =0; wndclass.hCursor =0; wndclass.hbrBackground =0; wndclass.lpszMenuName =NULL; wndclass.lpszClassName =szAppName; if (!RegisterClass (&wndclass)) { MessageBox (NULL,TEXT("Program requires Windows NT!"),szAppName, MB_ICONERROR); return 0; } hwnd = CreateWindow (szAppName, NULL, WS_DISABLED, 0, 0, 0, 0, NULL, NULL, hInstance, NULL); while (GetMessage(&msg, NULL, 0, 0)) { TranslateMessage (&msg); DispatchMessage (&msg); } return msg.wParam; }