CImageList::BeginDrag

Статья
10/16/2008

Call this function to begin dragging an image.

BOOL BeginDrag(
   int nImage,
   CPoint ptHotSpot 
);

Параметры

nImage
Zero-based index of the image to drag.
ptHotSpot
Coordinates of the starting drag position (typically, the cursor position). The coordinates are relative to the upper left corner of the image.

Возвращаемое значение

Nonzero if successful; otherwise 0.

Заметки

This function creates a temporary image list that is used for dragging. The image combines the specified image and its mask with the current cursor. In response to subsequent WM_MOUSEMOVE messages, you can move the drag image by using the DragMove member function. To end the drag operation, you can use the EndDrag member function.

Пример

void CImageListDlg::OnLButtonDown(UINT nFlags, CPoint point)
{
   // Initialize the drag image (usually called from WM_LBUTTONDOWN).
   m_myImageList.BeginDrag(0, CPoint(0, 0));
   m_myImageList.DragEnter(this, point);

   CDialog::OnLButtonDown(nFlags, point);
}