給控件添加文件或文件夾拖放功能

1.控件“屬性”的“消息列表”給WM_DROPFILES添加消息處理函數OnDropFiles

2.在函數void CImgAnalysis::OnDropFiles(HDROP hDropInfo)中獲取文件的路徑

void CImgAnalysis::OnDropFiles(HDROP hDropInfo)
{
	CString strFilePath;
	m_vectorFilePath.clear();
	int iDropCout = DragQueryFile(hDropInfo, -1, NULL, 0);
	for (int iNum = 0; iNum < iDropCount; iNum++)
	{
		strFilePath.Empty();
		DragQueryFile(hDropInfo, iNum, strFilePath.GetBuffer(MAX_PATH), MAX_PATH);
		m_vectorFilePath.push_back(strFilePath);
	}

	/*然後程式作者調用m_vectorFilePath來操作文件*/

	CDialog::OnDropFiles(hDropInfo);
}