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C++ panel rendering

Started by ehguacho2008 Nov 19, 2012 at 6:55 AM 6 replies 3.6k views

Original Post

ehguacho2008

Nov 19, 2012 at 6:55 AM

hi everyone! i'm new at the forum so please forgive me if my question is missplaced.

the problem is that i'm developing a windows based gameboy emulator in c++, and i need to put a panel (or somerthing like that) inside the main form to set it as the render target. this image may explain what i'm trying to say:

the fact is that i don't know how to create the control and attach it to the main form. can anybody give a hand? every hint will be welcome!

thanks in advance..

Eliad Moshe

Nov 19, 2012 at 10:33 AM

You can use a simple media layer such as: SDL or Allegro.
If you are targeting only windows and use the win32 API read about: GDI, GDI+ and Direct2D.

Also, take a glance at the DOSBox source code for inspiration.

Have fun!

Endurion

Nov 19, 2012 at 11:11 AM

For that you don't need a panel. Just create a dialog, attach a menu and the rest of the client area can be WM_PAINTed to.

If you do need a child control, RegisterClass a new window type and CreateWindow it with WS_CHILD set into your parent.

clashie

Nov 19, 2012 at 11:19 AM

It's probably just drawing straight to the window itself, not a specific control. If you're in need of a framebuffer to just dump pixels to, the simplest way on Windows is probably a DIB Section. It's just a few lines to init and you'll just get a pointer directly to the data, BitBlt() to the screen when you're done.

ehguacho2008

Nov 20, 2012 at 12:42 AM

thank you all for your quick responses (:
i used Allegro and SDL on older projects, so i know how to deal with 'em, but the problem is that i don't know how to set the form's client rectangle as the rendering target. how do i set the form's backbuffer as the rendering target for SDL or Allegro??? that's THE question for me :\

ehguacho2008

Nov 22, 2012 at 2:18 AM

anybody?? :'(

Endurion

Nov 22, 2012 at 5:36 AM

I only ever used SDL, but AFAIR SDL simply draws to the client area of a window (form) already, nothing special to set up for that.

ehguacho2008

Nov 23, 2012 at 1:18 AM

by default, whilst using SDL you've to create a window to use as the render target, but i know there's a chance to use an MFC dialog for that, but i don't know how...

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