Getting the desktop resolution

[aiaf]

How do i get the desktop native resolution size in leadwerks ?

I want to create a window full screen with the size of the user desktop screen.

 

I seen in API:

CountGraphicsModes

GetGraphicsMode

Probably been asked before but i searched and didnt find a solution.

 

[Marcousik]

This is a good question, because I had a lot of problem with this with my little race game.

Starting in fullscreen mode was buggy because it selected automatic the biggest resolution possible, so only a part of the image was projected on the screen.

The player had to change manually the resolution in the options to get it running ok, if the user windows screen resolution setting was lower as the biggest possible.

Some weird thing I never get solved. And this is no way for commercial games.

I had to start the game in windowded mode to get it run fine.

 

[gamecreator]

It's come up before and I don't believe Leadwerks does this, which means you'd need to use system functions.  The workaround is that you can take the last (largest) resolution from GetGraphicsMode which works most (but not all) of the time.

[reepblue]

My window code is here that has the solution:

 

[aiaf]

I get it, selecting the last resolution from GetGraphicsMode works.

On my side i get a 2560x1440 fullscreen.

 

Thanks , this basically answers my question.

[Marcousik]

@reepblue 

Sorry I am working in lua in LE4.6

But I don't understand how you solve the screen detection problem, how/where do you get the current windows user resolution ?

Quote

// Create a window
	Leadwerks::Window* window;
	std::string windowtitle = App::GetName();
	if (IsDebug()) windowtitle = windowtitle + " [Debug]";

	if (fullscreenmode)
	{
		iVec2 gfx = System::GetGraphicsMode(Leadwerks::System::CountGraphicsModes() - 1);
		window = Leadwerks::Window::Create(windowtitle, 0, 0, gfx.x, gfx.y, Leadwerks::Window::Fullscreen, parent);
	}

This seems to select as before the  biggest value " System::CountGraphicsModes() - 1 "  ??

 

[gamecreator]

5 hours ago, Marcousik said:

But I don't understand how you solve the screen detection problem, how/where do you get the current windows user resolution ?

This seems to select as before the  biggest value " System::CountGraphicsModes() - 1 "  ??

Yes, it looks like he's doing the same thing I mentioned, taking the last resolution from the list.  It doesn't actually detect the desktop resolution.

[aiaf]

Yes, its exactly what i did.

I tested on my windows desktop and linux laptop and it works.

Seem to always return highest resolution supported.

[gamecreator]

There's a reason I said that it works for "most" above.  I made a mini-game once using this autodetection, I think for a Leadwerks tournament, and someone said it didn't work for them.  I can't find the thread now.

[reepblue]

9 hours ago, Marcousik said:

@reepblue 

Sorry I am working in lua in LE4.6

But I don't understand how you solve the screen detection problem, how/where do you get the current windows user resolution ?

This seems to select as before the  biggest value " System::CountGraphicsModes() - 1 "  ??

 

You can take a look at the sample menu code for options to see how to obtain all resolutions with lua.

Fullscreen doesn't work for everyone for some reason. I had multiple computers run Leadwerks with no issues. The only time I had an issue was when I had that  Samsung Magic for SSD motoring running in the background. So I think some apps prevent fullscreen working properly for some reason.

 

[gamecreator]

For the sake of completeness, here are 2 methods in Windows to detect the desktop size:

RECT desktop;  // Get a handle to the desktop window
const HWND hDesktop = GetDesktopWindow();  // Get the size of screen to the variable desktop
GetWindowRect(hDesktop, &desktop);
cout << "Desktop size: " << desktop.right << ", " << desktop.bottom << '\n';

DWORD dwWidth = GetSystemMetrics(SM_CXSCREEN);
DWORD dwHeight = GetSystemMetrics(SM_CYSCREEN);
cout << "Desktop size: " << dwWidth << ", " << dwHeight << '\n';

Sources:
https://stackoverflow.com/questions/8690619/how-to-get-screen-resolution-in-c
https://stackoverflow.com/questions/17504954/windows-get-screen-resolution-in-c