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I have a tree grid control, and I would like to change the color where the nodes are displayed - not including the cells:

I tried overriding OnSiwPaintBackground, but it changed the color of all the cells background as well. I cannot go over all my call types and changed their background color, because there are many, and many more to come, and they should not be affected by the type of control they are in.

Can this be done, how?

Thanks,

Ron

Does it mean that by default the cells do not paint their background?

If so, then how can I paint their background from the grid (again, I cannot do it from the cells)

You should implement the CExtGridWnd::OnGridHookCellPaintBackground() virtual method and return true if your code paints the background of a grid cell. The returning false means the default background painting.

Asking again:

Does it mean that by default the cells do not paint their background?

If so, then how can I paint their background from the grid (again, I cannot do it from the cells)

Yes, by default the grit paints background for all its cells. A cell object paints its background only if you specify a custom background color for it. You should override the CExtGridWnd::OnGridHookCellPaintBackground() virtual method as we described in our previous answer in this thread.

Dear Support,

Can you please explain what you mean by using OnGridHookCellPaintBackground? what does this function do? how to use it?

Thanks,

Ron.

I can’t find documentation of this function - can you explain what it does and how it helps my case?

Thanks,

Ron.