我有一个datagridview哪个单元格具有click事件。单元格还具有以下mouseDown事件:

if (e.Button == MouseButtons.Left && e.Clicks == 1)
{
    string[] filesToDrag =
    {
        "c:/install.log"
    };

    gridOperations.DoDragDrop(new DataObject(DataFormats.FileDrop, filesToDrag), DragDropEffects.Copy);
}

每当我尝试单击某个单元格时,mousedown事件都会立即触发并尝试拖动该单元格。例如,仅当用户按住鼠标1秒钟时,如何才能使mousedown事件触发?谢谢!

最佳答案

正确的方法不是按时间执行,而是在用户充分移动鼠标时触发它。在Windows中,“移动足够”的通用度量是双击大小。实现CellMouseDown/Move事件处理程序,类似于以下内容:

    private Point mouseDownPos;

    private void dataGridView1_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e) {
        mouseDownPos = e.Location;
    }

    private void dataGridView1_CellMouseMove(object sender, DataGridViewCellMouseEventArgs e) {
        if ((e.Button & MouseButtons.Left) == MouseButtons.Left) {
            if (Math.Abs(e.X - mouseDownPos.X) >= SystemInformation.DoubleClickSize.Width ||
                Math.Abs(e.Y - mouseDownPos.Y) >= SystemInformation.DoubleClickSize.Height) {
                // Start dragging
                //...
            }
        }
    }

关于c# - 甚至延迟鼠标按下,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/14537041/

10-11 02:03