我有一个datagridview,哪些单元格有一个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);
}
每当我尝试单击一个单元格时,mousedown事件会立即触发并尝试拖动单元格。如果用户将鼠标按下1秒钟,我怎样才能使mousedown事件触发?谢谢!
答案 0 :(得分:8)
执行此操作的正确方法不是按时间进行,而是在用户移动鼠标时触发它。 Windows中“足够移动”的通用度量是双击大小。实现CellMouseDown / Move事件处理程序,类似于:
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
//...
}
}
}