in gdi, how to clear the background color of DC. so, the drawed text will show no background color.

Question

when i draw text use DC, it always show an backgournd color which is diffrent from window's background.

Answer 1

SetBkMode(hdc, TRANSPARENT);

This will prevent the text-drawing functions (and some others) from drawing a background. SetBkMode(hdc, OPAQUE) will switch back to opaque mode.