I have an old game that I am wanting to increase the resolution on. The problem is that the game is ancient and was written using DDRAW and GDI .A few things are weird with this application, First starting from the entry point all the program does is create the process. secondly all the other code is indeed executed just I can't break over it (Making reversing a very slow process).Has anyone tried to reverse a DDraw application?I so far, have it to where I have expanded the resolution in such, that the application is still showing the default resolution just pushed to the left top corner and everything is still the 640x480 and is surrounded by black BUT the cool thing is I can click out of the 640x480 in the black area and click on objects and move to them. Would anyone know how to possibly resolve this?Another thing, it doesn't seem to matter what kind of break point I set in this(outside of EP) area of code the program never breaks there. Is there something I am missing here?I can try to come up with a picture as an example if that would help ; if no one understands how I am describing resolution.Also, I only see a call for DirectDrawCreate  and it looks like it would point to an object or window but I cant tell entirely cause I cant break here.
Reversing DDRAW application
windows;ollydbg;interoperability
DDRAW is an object based interface. DirectDrawCreate creates DDRAW interface object (based on GUID provided as paramter). Regarding black area, most probably rendering part uses internally  smaller resolution. Could you share the game's name?