Can't increase screen resolution without application reboot

Development Programming & Scripting
21

FSlateApplication::Get().LockCursor(NULL) doesn’t work since UE 4.11. You can avoid this bproblem by using FSlateApplicationBase::Get().GetPlatformCursor()->Lock( nullptr ); instead of.

22

TLDR;
COPY/PASTE EASY MODE:

void [CLASS_NAME]::SetScreenResolution(FVector2D screen_resolution)
{
  FSlateApplicationBase::Get().GetPlatformCursor()->Lock(nullptr);
  UGameUserSettings* GameSettings = GEngine->GetGameUserSettings();
  GameSettings->SetScreenResolution(FIntPoint(screen_resolution.X, screen_resolution.Y));
  GameSettings->SetFullscreenMode(EWindowMode::Windowed);
  GameSettings->ApplySettings(false);
  GameSettings->SetFullscreenMode(EWindowMode::Fullscreen);
  GameSettings->ApplySettings(false);
}