CODEWITHSUNDEEP
c#eventsmouse
iTEgg
iTEgg

Reputation: 8340

Mouse moves too fast to capture events

this is related to: a previous question

BUT the question is my code only fails when i move the mouse really really fast over and around the TableLayoutPanel.

is it possible that C# or windows are reporting/triggering events out of order due to the fast mouse movement?

if so, how do i correct it?

thank you. i hope this is not considered double posting. if so, apologies.

Upvotes: 1

Views: 2768

Answers (2)

iTEgg
iTEgg

Reputation: 8340

i solved the issue. it was a matter of reordering the logic flow.

the solution spans 3 mouse events 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);
        }
    }

i thought i would post the solution for future knowledge seekers.

thanks.

Upvotes: 2

alemjerus
alemjerus

Reputation: 8268

Mouse does not report its position by every pixel it passes, there are 20ms intervals between reports. If you manage to cross your control within this interval, it will catch no mouse events at all.

Upvotes: 3

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