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Dear Tech Support,

Is there a way to redraw the cell? Currently the text is updated only when the mouse is dragged over the cell.

The CExtGridCellString is inside a CExtGridWnd

Thanks

Thank you, your solution worked perfectly.

First, you should get rectangular cell coordinates in the grid control’s client coordinate system:

CExtGridWnd & wndGrid = . . .
LONG nColNo = . . .
LONG nRowNo = . . .
CRect rcCellLocation;
      if( ! wndGrid.GridCellRectsGet(
                  nColNo,
                  nRowNo,
                  0,
                  0,
                  NULL,
                  &rcCellLocation
                  )
            )
            return . . .

The CExtGridWnd::GridCellRectsGet() method returns true> if the rcCellLocation rectangle was filled with correct cell rectangle coordinates in the grid’s client coordinate system. This method returns false</codde> if it is not possible to compute cell coordinates (cell at column <code>nColNo column and row nRowNo is outside the visible cell range or method parameters are invalid).

Then you should invalidate the part of the grid control which contains the cell at nColNo and nRowNo

wndGrid.InvalidateRect( &rcCellLocation );

This code delays repainting of grid control’s part which contains the specified grid cell. If you don not need delayed repainting and grid control’s surface on the screen should be updated immediately, then the next line of code should be

 wndGrid.UpdateWindow();

If you want to repaint several cells immediately, you should invoke the UpdateWindow() method only once after all the cells were invalidated.