鼠标移动太快无法捕捉事件答案

【问题标题】：Mouse moves too fast to capture events鼠标移动太快无法捕捉事件
【发布时间】：2010-02-15 18:33:59
【问题描述】：

这与：a previous question

但问题是，只有当我在 TableLayoutPanel 上和周围快速移动鼠标时，我的代码才会失败。

C# 或窗口是否可能由于鼠标快速移动而无序地报告/触发事件？

如果是这样，我该如何纠正？

谢谢。我希望这不被视为重复发布。如果是这样，请道歉。

【问题讨论】：

标签： c# events mouse

【解决方案1】：

鼠标不会通过它经过的每个像素来报告它的位置，报告之间有 20 毫秒的间隔。如果您设法在此时间间隔内越过您的控件，它根本不会捕获任何鼠标事件。

【讨论】：

这是很好的信息。知道非常有用。谢谢。有检查吗？ IE。如果鼠标移动得太快，则禁用处理？
您可以使用鼠标挂钩。这可能有用：blogs.msdn.com/toub/archive/2006/05/03/589468.aspx
@alemjerus 是否有说明间隔确实为 20 毫秒的文档？我问是因为我正在尝试解决一个问题，并且我想确保间隔是正确的。
@BryanJ 过去 6 年情况发生了变化。现在是 2-10 毫秒：wiki.archlinux.org/index.php/Mouse_polling_rate

【解决方案2】：

我解决了这个问题。这是重新排序逻辑流程的问题。

解决方案涵盖 3 个鼠标事件 MouseEnter、MouseMove、MouseLeave。

    private PictureBox HomeLastPicBox = null;

    private TableLayoutPanelCellPosition HomeLastPosition = new TableLayoutPanelCellPosition(0, 0);

    private void HomeTableLayoutPanel_MouseMove(object sender, MouseEventArgs e)
    {
        PictureBox HomeCurrentPicBox = (PictureBox)(HomeTableLayoutPanel.GetChildAtPoint(e.Location));

        if ((HomeCurrentPicBox != HomeLastPicBox) && (HomeCurrentPicBox != null))
        {

            HomeLastPicBox = (PictureBox)HomeTableLayoutPanel.GetControlFromPosition(HomeLastPosition.Column, HomeLastPosition.Row);

            if (GameModel.HomeCellStatus(HomeLastPosition.Column, HomeLastPosition.Row) == Cell.cellState.WATER)
            {
                HomeLastPicBox.Image = Properties.Resources.water;

            }

            TableLayoutPanelCellPosition HomeCurrentPosition = HomeTableLayoutPanel.GetCellPosition(HomeCurrentPicBox);

            if (GameModel.HomeCellStatus(HomeCurrentPosition.Column, HomeCurrentPosition.Row) == Cell.cellState.WATER)
            {
                HomeCurrentPicBox.Image = Properties.Resources.scan;

                HomeLastPosition = HomeCurrentPosition;
            }

            gameFormToolTip.SetToolTip(HomeTableLayoutPanel, GameModel.alphaCoords(HomeTableLayoutPanel.GetCellPosition(HomeCurrentPicBox).Column) + "," + HomeTableLayoutPanel.GetCellPosition(HomeCurrentPicBox).Row);
        }
    }

    private void HomeTableLayoutPanel_MouseEnter(object sender, EventArgs e)
    {
        Point p = HomeTableLayoutPanel.PointToClient(Control.MousePosition);
        PictureBox HomeCurrentPicBox = (PictureBox)(HomeTableLayoutPanel.GetChildAtPoint(p));

        if (HomeCurrentPicBox != null)
        {
            TableLayoutPanelCellPosition HomeCurrentPosition = HomeTableLayoutPanel.GetCellPosition(HomeCurrentPicBox);

            if (GameModel.HomeCellStatus(HomeCurrentPosition.Column, HomeCurrentPosition.Row) == Cell.cellState.WATER)
            {
                HomeCurrentPicBox.Image = Properties.Resources.scan;
            }

            gameFormToolTip.SetToolTip(HomeTableLayoutPanel, GameModel.alphaCoords(HomeTableLayoutPanel.GetCellPosition(HomeCurrentPicBox).Column) + "," + HomeTableLayoutPanel.GetCellPosition(HomeCurrentPicBox).Row);
        }
    }

    private void HomeTableLayoutPanel_MouseLeave(object sender, EventArgs e)
    {
        if (GameModel.HomeCellStatus(HomeLastPosition.Column, HomeLastPosition.Row) == Cell.cellState.WATER)
        {
            HomeLastPicBox = (PictureBox)HomeTableLayoutPanel.GetControlFromPosition(HomeLastPosition.Column, HomeLastPosition.Row);

            HomeLastPicBox.Image = Properties.Resources.water;

            gameFormToolTip.SetToolTip(HomeTableLayoutPanel, GameModel.alphaCoords(HomeTableLayoutPanel.GetCellPosition(HomeLastPicBox).Column) + "," + HomeTableLayoutPanel.GetCellPosition(HomeLastPicBox).Row);
        }
    }

我想我会为未来的知识寻求者发布解决方案。

谢谢。

【讨论】：