實現文件拖拽主要使用下面三個函數:
VOID DragAcceptFiles(HWND hWnd,BOOL fAccept);
UINT DragQueryFile(HDROP hDrop,UINT iFile,LPTSTR lpszFile,UINT cch);
VOID DragFinish(HDROP hDrop);
//處理消息 HDROP(wParam)
WM_DROPFILES
所以實現步驟:
- 窗口初始化完畢之後,允許拖拽
void CMainWnd::InitWindow()
{
__super::InitWindow();
DragAcceptFiles(GetHWND(), TRUE);
}
2.處理WM_DROPFILES 消息
if (uMsg == WM_DROPFILES)
{
HDROP hDropInfo = HDROP(wParam);
UINT uFileNum = ::DragQueryFile(hDropInfo, 0xffffffff, NULL, 0);
TCHAR strFileName[MAX_PATH] = _T("");
for (int i = 0; i < uFileNum; i++)
{
::DragQueryFile(hDropInfo, i, strFileName, MAX_PATH);
}
::DragFinish(hDropInfo);
return TRUE;
}