I am trying to get the "Location" or X,Y cooridnates of the cell at its absolute position so that I know where to position a popup over that cell.

 Again, there's not PointToClient() method, so that's useless.  I'm getting closer but still not there with:

                UltraGrid grid = ((UltraGrid)sender);
              
                CellUIElement element = (CellUIElement)e.Cell.GetUIElement(grid.ActiveRowScrollRegion, grid.ActiveColScrollRegion);

                Point p = new Point();
                p = grpSalesOrder.PointToClient(p);

                int x = element.RectInsideBorders.X + grid.Location.X + p.X;
                int y = element.RectInsideBorders.Y + grid.Location.Y + p.Y;
              
               
                frmPopup frm = new frmPopup(x, y);

grpSalesOrder being the first control that I can find with a PointToScreen() call.  Which returns  negative values (not sure why yet, still researeching).   

 I'm not usually a UI developer so this is all a bit new for me.

 So that's my question, how do I get the absolute X,Y position of the cell??????

Hi,

I don't think MouseHover is going to be very useful to you. This event fired when the mouse hovers over the control. So that means that if the mouse hovers over a cell in the grid, the event will fire. But this event will not fire again if you move the mouse over a different cell and hover it there. Since the event is control-based, it will only fire once for the entire control, and then it will not fire again until the mouse leaves the control and comes back in.

If you want to trap for mouse hovering over a cell, you would probably have to use MouseEnterElement and MouseLeaveElement and use your own timer to detect hovering.

Anyway, even though I don't think it will do you much good, if you want to get the cell in MouseHover, here's how you can do it...

        private void ultraGrid1_MouseHover(object sender, EventArgs e)
        {
            UltraGrid grid = (UltraGrid)sender;
            UIElement element = grid.DisplayLayout.UIElement.LastElementEntered;
            if (element == null)
                return;

            UltraGridCell cell = element.GetContext(typeof(UltraGridCell)) as UltraGridCell;
            if (cell == null)
                return;

            Debug.WriteLine(cell.Text);
        }

Thanks for your reply, but it looks like Hover & MouseEntyer event work the same, they fire only once.

That's why I said MouseEnterElement and not MouseEnter. :)

Hello

I have an ultrawingrid. I have an MouseEnterElement event. I have a debug breakpoint on this event and I was surprised to see that this event fires in an infinite loop , i had to remove the breakpoint to actually stop it. Why is it so?

I am not sure if it was an infinite loop or number of rows * number of columns times. But still why so?

 another question-->

on the mouseenterelement event , I want to get the current row , get the id value (this is a column in the grid row) then fetch the details from the database.

grid.activerow is null. How can I get the current row on which the mouse has entered?

Thanks

Janki

Hi Janki,

jsharpc said:

I have an ultrawingrid. I have an MouseEnterElement event. I have a debug breakpoint on this event and I was surprised to see that this event fires in an infinite loop , i had to remove the breakpoint to actually stop it. Why is it so?

I am not sure if it was an infinite loop or number of rows * number of columns times. But still why so?

I've used a breakpoint in this event many time, and I have never seen the event fire in an infinite loop. Of course, if you put a breakpoint in this event and then you continue to run your application and the application happens to appear under the current position of the mouse, then the grid will get a MouseMove message and the event will fire again. So you need to make sure the mouse point is out of the way.

jsharpc said:

on the mouseenterelement event , I want to get the current row , get the id value (this is a column in the grid row) then fetch the details from the database.

grid.activerow is null. How can I get the current row on which the mouse has entered?

You can't use the ActiveRow. ActiveRow is nothing to do with the current position of the mouse. You can get the row using the UIElements.

        private void ultraGrid1_MouseEnterElement(object sender, UIElementEventArgs e)
        {
            RowUIElement rowUIElement = e.Element.GetAncestor(typeof(RowUIElement)) as RowUIElement;
            if (rowUIElement != null)
            {
                UltraGridRow row = rowUIElement.Row;                
            }
        }

Thank you for the reply.

Hi,

There's no easy (or even reasonable, in my opinion) way to do this, because you cannot determine the selection position in a TextBox or other grid cell from a point.

The way the grid handles this internally, when you single-click on a cell, is that it fakes it by waiting until the cell has entered edit mode and then it uses the Winfows API to send a MouseDown message to the TextBox at the same point. So you could try to take the same approach, but it would be very tricky.

Hi,

In ultrawingrid, when i double click the cell i need to place the cursor exactly where i double clicked.

Now when i double click the cell the cursor is placed in the end of the text. I done this with the help of placing the below code in the doubleclickcell event of the grid.

        Grid.PerformAction(UltraGridAction.EnterEditMode)
        Dim editor As EmbeddableEditorBase = Me.Grid.ActiveCell.EditorResolved

        editor.SelectionStart = editor.TextLength
        editor.SelectionLength = 0

Please let me know how to place the cursor anywere between the text where i double click.