public static extern bool AdjustWindowRect(ref NativeRectangle lpRect, uint dwStyle, [MarshalAs(UnmanagedType.Bool)] bool bMenu);
static extern bool GetClientRect(IntPtr hWnd, out NativeRectangle lpRect);
static extern bool GetWindowRect(IntPtr hWnd, out NativeRectangle lpRect);
void CreateDevice(DeviceSettings settings)
{
DeviceSettings oldSettings = CurrentSettings;
CurrentSettings = settings;
ignoreSizeChanges = true;
bool keepCurrentWindowSize = false;
if (settings.BackBufferWidth == 0 && settings.BackBufferHeight == 0)
{
keepCurrentWindowSize = true;
}
// handle the window state in Direct3D9 (it will be handled for us in DXGI)
// check if we are going to windowed or fullscreen mode
if (settings.Windowed)
{
if (oldSettings != null && !oldSettings.Windowed)
{
NativeMethods.SetWindowLong(game.Window.Handle, WindowConstants.GWL_STYLE, (uint)windowedStyle);
}
}
else
{
if (oldSettings == null || oldSettings.Windowed)
{
savedTopmost = game.Window.TopMost;
long style = NativeMethods.GetWindowLong(game.Window.Handle, WindowConstants.GWL_STYLE);
style &= ~WindowConstants.WS_MAXIMIZE & ~WindowConstants.WS_MINIMIZE;
windowedStyle = style;
windowedPlacement = new WINDOWPLACEMENT();
windowedPlacement.length = WINDOWPLACEMENT.Length;
NativeMethods.GetWindowPlacement(game.Window.Handle, ref windowedPlacement);
}
// hide the window until we are done messing with it
game.Window.Hide();
NativeMethods.SetWindowLong(game.Window.Handle, WindowConstants.GWL_STYLE, (uint)(WindowConstants.WS_POPUP | WindowConstants.WS_SYSMENU));
WINDOWPLACEMENT placement = new WINDOWPLACEMENT();
placement.length = WINDOWPLACEMENT.Length;
NativeMethods.GetWindowPlacement(game.Window.Handle, ref placement);
// check if we are in the middle of a restore
if ((placement.flags & WindowConstants.WPF_RESTORETOMAXIMIZED) != 0)
{
// update the flags to avoid sizing issues
placement.flags &= ~WindowConstants.WPF_RESTORETOMAXIMIZED;
placement.showCmd = WindowConstants.SW_RESTORE;
NativeMethods.SetWindowPlacement(game.Window.Handle, ref placement);
}
}
if (settings.Windowed)
{
if (oldSettings != null && !oldSettings.Windowed)
{
fullscreenWindowWidth = oldSettings.BackBufferWidth;
fullscreenWindowHeight = oldSettings.BackBufferHeight;
}
}
else
{
if (oldSettings != null && oldSettings.Windowed)
{
windowedWindowWidth = oldSettings.BackBufferWidth;
windowedWindowHeight = oldSettings.BackBufferHeight;
}
}
// check if the device can be reset, or if we need to completely recreate it
Result result = ResultCode.Success;
bool canReset = CanDeviceBeReset(oldSettings, settings);
if (canReset)
{
result = ResetDevice();
}
if (result == ResultCode.DeviceLost)
{
deviceLost = true;
}
else if (!canReset || result.Failure)
{
if (oldSettings != null)
{
ReleaseDevice();
}
InitializeDevice();
}
UpdateDeviceInformation();
// check if we changed from fullscreen to windowed mode
if (oldSettings != null && !oldSettings.Windowed && settings.Windowed)
{
NativeMethods.SetWindowPlacement(game.Window.Handle, ref windowedPlacement);
game.Window.TopMost = savedTopmost;
}
// check if we need to resize
if (settings.Windowed && !keepCurrentWindowSize)
{
int width;
int height;
if (NativeMethods.IsIconic(game.Window.Handle))
{
WINDOWPLACEMENT placement = new WINDOWPLACEMENT();
placement.length = WINDOWPLACEMENT.Length;
NativeMethods.GetWindowPlacement(game.Window.Handle, ref placement);
// check if we are being restored
if ((placement.flags & WindowConstants.WPF_RESTORETOMAXIMIZED) != 0 && placement.showCmd == WindowConstants.SW_SHOWMINIMIZED)
{
NativeMethods.ShowWindow(game.Window.Handle, WindowConstants.SW_RESTORE);
Rectangle rect = NativeMethods.GetClientRectangle(game.Window.Handle);
width = rect.Width;
height = rect.Height;
NativeMethods.ShowWindow(game.Window.Handle, WindowConstants.SW_MINIMIZE);
}
else
{
NativeRectangle frame = new NativeRectangle();
NativeMethods.AdjustWindowRect(ref frame, (uint)windowedStyle, false);
int frameWidth = frame.right - frame.left;
int frameHeight = frame.bottom - frame.top;
width = placement.rcNormalPosition.right - placement.rcNormalPosition.left - frameWidth;
height = placement.rcNormalPosition.bottom - placement.rcNormalPosition.top - frameHeight;
}
}
else
{
Rectangle rect = NativeMethods.GetClientRectangle(game.Window.Handle);
width = rect.Width;
height = rect.Height;
}
// check if we have a different desired size
if (width != settings.BackBufferWidth ||
height != settings.BackBufferHeight)
{
if (NativeMethods.IsIconic(game.Window.Handle))
{
NativeMethods.ShowWindow(game.Window.Handle, WindowConstants.SW_RESTORE);
}
if (NativeMethods.IsZoomed(game.Window.Handle))
{
NativeMethods.ShowWindow(game.Window.Handle, WindowConstants.SW_RESTORE);
}
NativeRectangle rect = new NativeRectangle();
rect.right = settings.BackBufferWidth;
rect.bottom = settings.BackBufferHeight;
NativeMethods.AdjustWindowRect(ref rect,
NativeMethods.GetWindowLong(game.Window.Handle, WindowConstants.GWL_STYLE), false);
NativeMethods.SetWindowPos(game.Window.Handle, IntPtr.Zero, 0, 0, rect.right - rect.left,
rect.bottom - rect.top, WindowConstants.SWP_NOZORDER | WindowConstants.SWP_NOMOVE);
Rectangle r = NativeMethods.GetClientRectangle(game.Window.Handle);
int clientWidth = r.Width;
int clientHeight = r.Height;
// check if the size was modified by Windows
if (clientWidth != settings.BackBufferWidth ||
clientHeight != settings.BackBufferHeight)
{
DeviceSettings newSettings = CurrentSettings.Clone();
newSettings.BackBufferWidth = 0;
newSettings.BackBufferHeight = 0;
if (newSettings.Direct3D9 != null)
{
var pp = newSettings.Direct3D9.PresentParameters;
pp.BackBufferWidth = GameWindowSize.Width; // #23510 2010.10.31 add yyagi: to avoid setting BackBufferSize=ClientSize
pp.BackBufferHeight = GameWindowSize.Height; // #23510 2010.10.31 add yyagi: to avoid setting BackBufferSize=ClientSize
newSettings.Direct3D9.PresentParameters = pp;
}
CreateDevice(newSettings);
}
}
}
// if the window is still hidden, make sure it is shown
if (!game.Window.Visible)
{
NativeMethods.ShowWindow(game.Window.Handle, WindowConstants.SW_SHOW);
}
// set the execution state of the thread
if (!IsWindowed)
{
NativeMethods.SetThreadExecutionState(WindowConstants.ES_DISPLAY_REQUIRED | WindowConstants.ES_CONTINUOUS);
}
else
{
NativeMethods.SetThreadExecutionState(WindowConstants.ES_CONTINUOUS);
}
ignoreSizeChanges = false;
}