C# WindowsForm - How to change a tabpages headers text color based on how dark the background color is?

Question

I do not want to change the background color of the header, I want to change the text color in the header based on how dark or bright the background color of the header is.

I.e if the background color of the header is black or dark purple then make the text white. Or if the background color of the header is bright yellow make the text black.

Thanks.

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score 5 · Accepted Answer · answered Jan 03 '17 at 15:04

Set the draw mode of you tab page:

tabControl1.DrawMode = TabDrawMode.OwnerDrawFixed;
tabControl1.DrawItem += tabControl1_DrawItem;

And then:

private void tabControl1_DrawItem(object sender, DrawItemEventArgs e)
{
    e.DrawBackground();
    var color = GetDesiredColor(e.Index); // TODO: Implement it for yourself
    TextRenderer.DrawText(e.Graphics, tabControl1.TabPages[e.Index].Text, e.Font, e.Bounds, color);
}

Of course, you might want to adjust the bounds, too.

C# WindowsForm - How to change a tabpages headers text color based on how dark the background color is?

1 Answers1

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