I found this code, but I wanted to ask a fast question, does this give the maximum possible resolution? Or just the current resolution set? I know there is a System function but I am trying not to use any System functions if at all possible.
#include "wtypes.h"
#include <iostream>
using namespace std;
// Get the horizontal and vertical screen sizes in pixel
void GetDesktopResolution(int& horizontal, int& vertical)
{
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);
// The top left corner will have coordinates (0,0)
// and the bottom right corner will have coordinates
// (horizontal, vertical)
horizontal = desktop.right;
vertical = desktop.bottom;
}
int main()
{
int horizontal = 0;
int vertical = 0;
GetDesktopResolution(horizontal, vertical);
cout << horizontal << '\n' << vertical << '\n';
return 0;
}