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OpenGL window without title bar

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hey guys, I´m writing an openGL application under windows using the WinAPI for the windows-related stuff like window-creation, messaging etc. That works fine so far. But now I want to remove the title bar of the application window and that seems to be more complicated than I thought.. I tried WS_POPUP for the window-style and it worked. BUT the app switches in some kind of totally-crappy-fullscreen-mode where I can´t have windows of other applications overlapping the window of my app. The tab-switch and the initial switch to the fullscreen-mode works pretty slow. I looked at SDL where my problem could be solved with one line of code: SDL_SetVideoMode(width, height, 0, SDL_OPENGL |SDL_SWSURFACE | SDL_NOFRAME ) So my question is: How can I get rid of the crappy title bar in windows and build a nice 'splashscreen-window' with my own control-elements like the steam window or the winamp window. Is there a way of doing that with the WinAPI only? And if I make use of SDL, do I loose my OpenGL 3.x context? adios!

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How are you creating your window? You're obviously setting fullscreen mode too. Are you sure you need to?

For a window without a title bar, but with a thin border use

CreateWindowEx( WS_EX_TOOLWINDOW, L"WindowName", L"", WS_POPUP | WS_BORDER | WS_CLIPCHILDREN | WS_CLIPSIBLINGS, left, top, width, height, NULL, NULL, GetModuleHandle( NULL ), 0);

Get rid of WS_BORDER if you want.

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And is there some way, to change the skin of the windows?
I mean to use my own textures for titlebars and borders?
Or somehow preserve their functions (move/resize)?
All I can find is changing the skin of all Windows.
(Not so important, so I don't want a new thread on this)

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Ok, I got it.
Originally I wanted a window (not fullscreen) to be displayed without the titlebar and it seemed the only way to do this is by using the WS_POPUP flag, which automatically switches the window in fullscreen-mode... not my intention.
I didn´t find any combination of style-flags to get a nude-window without going fullscreen. And in fact there´s no way to do that while initializing the window.
But then I fortunately stumbled on a function to override the window-style and this is doing the job. Now I have my absolutely-naked-no-ugly-titlebar-window YAY :D

SetWindowLong(_hwnd, GWL_style, WS_SYSMENU | WS_THICKFRAME | WS_MINIMIZEBOX);

@szecs
Thats possible.. some kind of.. but it´s really complicated. You need to mess around with the message-loop of your application-window in a pretty ugly way to bypass the draw-messages of the control-elements.
I think using a framework like Qt or writing your own minimal GUI-system is the best choice. To preserve a window from resize/move just disable the titlebar using SetWindowLong() after window-creation. No titlebar, no titlebar-functionality.

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