show small image in every place of screen

[A_Salimi]

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.

[PJ Arends]

You could use a borderless popup window. You could even use window regions to have the window in the shape you want.

Within you lies the power for good - Use it!

[A_Salimi]

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?

[leon de boer]

You really can't do that in MFC or at least not using any MFC commands because the windows you are trying to draw on don't belong to MFC :-) You can use WIN32 API commands to draw on the desktop like this

/* Get the DC of the desktop */
HDC hDC_Desktop = GetDC(0);

/* Draw a simple blue rectangle on the desktop */
RECT rect = { 0, 0, 200, 200 };
HBRUSH blueBrush=CreateSolidBrush(RGB(0,0,255));
FillRect(hDC_Desktop, &rect, blueBrush);

Your drawing wont stay there very long or be refreshed however :-) To make anything permanent on the desktop you need to subclass the desktop handler and it's paint message and that requires a lot more knowledge. http://msdn.microsoft.com/en-us/library/windows/desktop/bb773183%28v=vs.85%29.aspx[^] I suspect you are going to tell us more about what you are trying to do.