Searched the forums but didn't find the anwser to this and I'm using Lite-C so hope this is the right place to ask in.

I made a panel with five buttons that change the video_mode from 7 to 11. All others work fine but the one with video_switch(10,0,0); in it don't. When cliking this one button the resolution stays the same as it was but my mouse_map picture shows the black parts that should be invisible! Gets normal after clicking an other button. If I set video_mode = 10; in function main the program seem to open in mode 9... "Depending on the video card, some of the resolutions are not available", but I can set my screen resolution to 1440x900 and higher in display properties so computer can handle it. Or is it diffrent when it comes to games and such...? Any ideas why I'm having this problem? And how to fix it...