Creating a control like this

Question

How could I create a control that looks like this one:

I just want that small end. Thanks

Answer 1

In your WndProc handle the WM_PAINT message. The easiest way using GDI is to have a ready to use image in your resources to load and drow on the window's DC. Little bit more complicated is to use GDI+, where you can draw rounded corners using Path object and gradient background using LinearGradientBrush.

Answer 2

If that's a Windows ComboBox control with a visual style applied to it, you can render its themed button wherever you like using DrawThemeBackground() and CP_DROPDOWNBUTTON.