Windows Need help with desktop scaling

[ThatGuyMiniB]

I have been trying to figure out scaling for desktop and I can't seem to figure it out. I always seem to get black bars. I have looked at pixelated popes videos but again can't figure it out. I am using gamemaker 2

Spoiler: In the create event

if(os_type == os_windows){

ideal_width = 1920;
ideal_height = 0;

start_b_width = display_get_width();
start_b_height = display_get_height();

aspect_ratio = display_get_width()/display_get_height();

ideal_height = round(ideal_width / aspect_ratio);

if(ideal_height & 1){
    ideal_height++;
}

room_set_width(room0, ideal_width);
room_set_height(room0, ideal_height);
room_goto_next();
surface_resize(application_surface, ideal_width, ideal_height);

}[/SPOILER]

Spoiler: In the step event

if(display_get_width() != start_b_width || display_get_height() != start_b_height){

aspect_ratio = display_get_width()/ display_get_height();

ideal_height = round(ideal_width / aspect_ratio);

if(ideal_height & 1){
    ideal_height++;
}

room_set_width(room0, ideal_width);
room_set_height(room0, ideal_height);
room_goto_next();
surface_resize(application_surface, ideal_width, ideal_height);
start_b_width = display_get_width();
start_b_height = display_get_height();
}

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[Pixelated_Pope]

If you watched my videos you should know that making a game with an ideal width over 960 is a REALLY bad idea. Nor should you be checking the resolution ever single step and adjusting based on it.

Room set width and height also doesn't really do anything for you as far as your resolution is concerned.

I suggest you re-watch my videos, because you seemed to have missed a great deal of the information in there.