Question

我很想知道,它是否对我称之为“DoDragDrop”方法的视窗应用产生任何影响。

我有一个表格,有两种图像Box控制。一个人可以被拖走,而另一个人则拥有真正的许可财产。

The MouseDown event handler for the draggable PictureBox is as follows:

    private void dragPictureBox_MouseDown(object sender, MouseEventArgs e)
    {
        if (sender is PictureBox)
        {
            var pictureBox = (PictureBox) sender;
            var effect = pictureBox.DoDragDrop(
                pictureBox.Image, DragDropEffects.All);
            MessageBox.Show("Drag ended in a " + effect);
        }
    }

但是,为了不把DoDragDrop放在图像Box上,我似乎也能够使用任何控制,例如表格本身。

var effect = this.DoDragDrop(pictureBox.Image, DragDropEffects.All);

甚至

var effect = label1.DoDragDrop(pictureBox.Image, DragDropEffects.All);

这是否改变了我称之为DragDrop方法的控制? 如果是的话,那会有什么区别?

Answer 1

It s not very well documented, but I believe it effects which control would have the QueryContinueDrag event raised on it.

所有这些例子都倾向于使用拖拉数据的来源,因此我坚持使用这一数据。

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