Opengl Delphi example showing how to draw lines, rectangles and circles with your mouse in Delphi using OpenGl. First, select the primitive you want to draw and then use your mouse to draw graphic primitives on screen. No third party components. Flicker free. Just Delphi and OpenGl. Full Delphi source code .
Runs under: Win95,WinCE,WinNT,Windows 2000,WinXP,Win98,WinME,Windows Server 2003 x64,Windows Vista