XNA Set Graphics Mode


public bool SetGraphicsMode(int Width, int Height, bool isFullScreen)
{
// If we aren't using a full screen mode, the height and width of the window can
// be set to anything equal to or smaller than the actual screen size.
if (isFullScreen == false)
{
if ((Width <= GraphicsAdapter.DefaultAdapter.CurrentDisplayMode.Width)
&& (Height <= GraphicsAdapter.DefaultAdapter.CurrentDisplayMode.Height))
{
_GraphicsDeviceManager.PreferredBackBufferWidth = Width;
_GraphicsDeviceManager.PreferredBackBufferHeight = Height;
_GraphicsDeviceManager.IsFullScreen = isFullScreen;
_GraphicsDeviceManager.ApplyChanges();

return true;
}
}
else
{
// If we are using full screen mode, we should check to make sure that the display
// adapter can handle the video mode we are trying to set. To do this, we will
// iterate thorugh the display modes supported by the adapter and check them against
// the mode we want to set.
foreach (DisplayMode dm in GraphicsAdapter.DefaultAdapter.SupportedDisplayModes)
{
// Check the width and height of each mode against the passed values
if ((dm.Width == Width) && (dm.Height == Height))
{
// The mode is supported, so set the buffer formats, apply changes and return
_GraphicsDeviceManager.PreferredBackBufferWidth = Width;
_GraphicsDeviceManager.PreferredBackBufferHeight = Height;
_GraphicsDeviceManager.IsFullScreen = isFullScreen;
_GraphicsDeviceManager.ApplyChanges();

return true;
}
}
}
return false;
}