Custom cell renderer and key events

Hi Amit,

Since Grid hosts your control inside the cell, it will use the keys navigation keys to move between the cells and will not pass on to the custom Control. So if the Control (CurrentCell) is in focus, then we need to programmatically do the required functions.

You can try setting the Grid.WantKeys flag to true in the ProcessKeyEventArgs override and revert it back to false in the Keyup event of the custom control, so that the key messages will not be processed by grid.
If you set WantKeys property of the grid to false, the grid will not process any keys like, TAB, arrow keys, Esc, etc.

protected override void OnInitialize(int rowIndex, int colIndex)
{
//
this.Control.KeyUp += new KeyEventHandler(Control_KeyUp);
}

protected override bool ProcessKeyEventArgs(ref System.Windows.Forms.Message m)
{
Keys keyCode = (Keys) ((int) m.WParam) & Keys.KeyCode;

if (m.Msg == 256 && keyCode == Keys.Tab)
{
this.Grid.WantKeys = true;
}
else
this.Grid.WantKeys = false;
//
}

void Control_KeyUp(object sender, KeyEventArgs e)
{
this.Grid.WantKeys = true;
}

Let me know if this helps.
Thanks,
Rajagopal