Thanks for your answer.if it's possible for you please more explain. imagin you want to draw a line on Specified window.recently i used this codes to draw a line on my application's dialog: CClientDc mydc(this); mydc.MoveTo(5, 20); mydc.LineTo(80,20); but this codes draw a line in my application's dialog. Who can i draw a line in every window that i want?

Hello every one. i want to show an image in every place of screen with MFC. for example i want to load an arrow picture near windows clock or near start menu or in every place in its original shape and not in the dialog or form. Please help me or give me a good link for this action. Thanks.