private void RegisterWindowClass()
{
_wndProcDelegate = WndProc;
var wc = new WindowClassEx
{
Styles = WindowClassStyles.CS_HREDRAW | WindowClassStyles.CS_VREDRAW | WindowClassStyles.CS_OWNDC,
WindowProc = _wndProcDelegate,
InstanceHandle = Kernel32.GetModuleHandle(null),
CursorHandle = User32.LoadCursor(IntPtr.Zero, (IntPtr)SystemCursor.IDC_ARROW),
ClassName = CLASS_NAME
};
wc.Size = (uint)Marshal.SizeOf(wc);
// Load user icon - if any.
wc.IconHandle = User32.LoadImage(Kernel32.GetModuleHandle(null), "#32512", ResourceImageType.IMAGE_ICON, 0, 0, LoadResourceFlags.LR_DEFAULTSIZE | LoadResourceFlags.LR_SHARED);
if (wc.IconHandle == IntPtr.Zero)
{
Kernel32.SetLastError(0);
// None loaded - load default.
wc.IconHandle = User32.LoadImage(IntPtr.Zero, (IntPtr)SystemIcon.IDI_APPLICATION, ResourceImageType.IMAGE_ICON, 0, 0, LoadResourceFlags.LR_DEFAULTSIZE | LoadResourceFlags.LR_SHARED);
}
ushort windowClass = User32.RegisterClassEx(ref wc);
if (windowClass == 0)
{
CheckError("Win32: Failed to register window class.", true);
}
CheckError("Win32: Could not register class.");
}
public static bool GetIsProcessorAMD64()
{
SystemInfo info;
Kernel32Methods.GetNativeSystemInfo(out info);
return(info.ProcessorArchitecture == (uint)ProcessArchitecture.PROCESSOR_ARCHITECTURE_AMD64);
}
/// <summary>
/// Check for a Win32 error.
/// </summary>
/// <param name="msg">A message to display with the error.</param>
/// <param name="sureError">Whether you are sure an error occured.</param>
public static void CheckError(string msg, bool sureError = false)
{
uint errorCheck = Kernel32.GetLastError();
if (errorCheck == 0 && !sureError)
{
return;
}
// Check predefined errors.
switch (errorCheck)
{
case ERROR_INVALID_VERSION_ARB:
Engine.SubmitError(new Exception($"Driver doesn't support version of {msg}"));
break;
case ERROR_INVALID_PROFILE_ARB:
Engine.SubmitError(new Exception($"Driver doesn't support profile of {msg}"));
break;
default:
Engine.SubmitError(new Exception(msg, new Win32Exception((int)errorCheck)));
break;
}
}
public static Version GetVersion()
{
var dwVersion = Kernel32Methods.GetVersion();
var build = dwVersion < 0x80000000 ? dwVersion.HighAsUInt() : 0; // (DWORD) (HIWORD(dwVersion))
var v = new Version(
(byte)dwVersion.Low(), // (DWORD)(LOBYTE(LOWORD(dwVersion)))
(dwVersion.Low() >> 8) & 0xff,
(int)build // (DWORD)(HIBYTE(LOWORD(dwVersion)))
);
return(v);
}
/// <summary>
/// Updates key names according to the current keyboard layout.
/// </summary>
private void PopulateKeyNames()
{
var state = new byte[256];
// Initialize the key names array.
_keyNames = new string[_scanCodes.Length];
for (var key = (int)Key.Space; key < (int)Key.Last; key++)
{
uint vk;
int scanCode = _scanCodes[key];
if (scanCode == -1)
{
continue;
}
if (key >= (int)Key.Kp0 && key <= (int)Key.KpAdd)
{
uint[] vks =
{
(uint)VirtualKey.NUMPAD0, (uint)VirtualKey.NUMPAD1, (uint)VirtualKey.NUMPAD2, (uint)VirtualKey.NUMPAD3,
(uint)VirtualKey.NUMPAD4, (uint)VirtualKey.NUMPAD5, (uint)VirtualKey.NUMPAD6, (uint)VirtualKey.NUMPAD7,
(uint)VirtualKey.NUMPAD8, (uint)VirtualKey.NUMPAD9, (uint)VirtualKey.DECIMAL, (uint)VirtualKey.DIVIDE,
(uint)VirtualKey.MULTIPLY, (uint)VirtualKey.SUBTRACT, (uint)VirtualKey.ADD
};
vk = vks[key - (int)Key.Kp0];
}
else
{
vk = User32.MapVirtualKey((uint)scanCode, VirtualKeyMapType.MAPVK_VSC_TO_VK);
}
var chars = new StringBuilder(16);
int length = User32.ToUnicode(vk, (uint)scanCode, state, chars, chars.Capacity, 0);
if (length == -1)
{
length = User32.ToUnicode(vk, (uint)scanCode, state, chars, chars.Capacity, 0);
}
if (length < 1)
{
continue;
}
var keyName = new char[5];
Kernel32.WideCharToMultiByte(CodePage.CpUtf8, 0, chars, 1, keyName, keyName.Length, IntPtr.Zero, out bool _);
_keyNames[key] = NativeHelpers.StringFromNullTerminated(keyName);
}
}
private void CreateHelperWindow()
{
HelperWindowHandle = User32.CreateWindowEx(
WindowExStyles.WS_EX_OVERLAPPEDWINDOW,
CLASS_NAME,
"Emotion Helper Window",
WindowStyles.WS_CLIPSIBLINGS | WindowStyles.WS_CLIPCHILDREN,
0, 0, 100, 100,
IntPtr.Zero, IntPtr.Zero,
Kernel32.GetModuleHandle(null),
IntPtr.Zero
);
if (HelperWindowHandle == IntPtr.Zero)
{
CheckError("Win32: Failed to create helper window.", true);
}
// HACK: The command to the first ShowWindow call is ignored if the parent
// process passed along a STARTUPINFO, so clear that with a no-op call
User32.ShowWindow(HelperWindowHandle, ShowWindowCommands.SW_HIDE);
// Register for HID device notifications
var dbi = new DevBroadcastDeviceInterfaceW();
dbi.DbccSize = (uint)Marshal.SizeOf(dbi);
dbi.DbccDeviceType = DeviceType.DeviceInterface;
dbi.DbccClassGuid = User32Guids.GuidDevInterfaceHid;
_deviceNotificationHandle = User32.RegisterDeviceNotificationW(HelperWindowHandle, ref dbi, DeviceNotificationFlags.WindowHandle);
CheckError("Registering for device notifications.");
while (User32.PeekMessage(out Message msg, HelperWindowHandle, 0, 0, PeekMessageFlags.PM_REMOVE))
{
User32.TranslateMessage(ref msg);
User32.DispatchMessage(ref msg);
}
Kernel32.SetLastError(0);
CheckError("Creating helper window.");
}
/// <inheritdoc />
protected override void SetupPlatform(Configurator config)
{
// todo: load libraries - if any
// probably XInput
// Initialize audio - Try to create WasApi - otherwise return the fake context so execution can go on.
Audio = WasApiAudioContext.TryCreate() ?? (AudioContext) new NullAudioContext();
Engine.Log.Trace("Audio init complete.", MessageSource.Win32);
PopulateKeyNames();
if (IsWindows10CreatorsUpdateOrGreaterWin32)
{
User32.SetProcessDpiAwarenessContext(DpiAwarenessContext.DpiAwarenessContextPerMonitorAwareV2);
}
else if (IsWindows81OrGreater)
{
User32.SetProcessDpiAwareness(ProcessDpiAwareness.ProcessPerMonitorDpiAware);
}
else
{
User32.SetProcessDPIAware();
}
RegisterWindowClass();
CreateHelperWindow();
PollMonitors();
Engine.Log.Trace("Platform init complete.", MessageSource.Win32);
var windowInitialSize = new Rect
{
Right = (int)config.HostSize.X,
Bottom = (int)config.HostSize.Y
};
Win32Window.GetFullWindowRect(Win32Window.DEFAULT_WINDOW_STYLE, Win32Window.DEFAULT_WINDOW_STYLE_EX, DEFAULT_DPI, ref windowInitialSize);
int initialWidth = windowInitialSize.Right - windowInitialSize.Left;
int initialHeight = windowInitialSize.Bottom - windowInitialSize.Top;
IntPtr handle = User32.CreateWindowEx(
Win32Window.DEFAULT_WINDOW_STYLE_EX,
CLASS_NAME,
config.HostTitle,
Win32Window.DEFAULT_WINDOW_STYLE,
(int)CreateWindowFlags.CW_USEDEFAULT, (int)CreateWindowFlags.CW_USEDEFAULT, // Position - default
initialWidth, initialHeight, // Size - initial
IntPtr.Zero, // No parent window
IntPtr.Zero, // No window menu
Kernel32.GetModuleHandle(null),
IntPtr.Zero
);
if (handle == IntPtr.Zero)
{
CheckError("Couldn't create window.", true);
return;
}
Engine.Log.Trace("Window created.", MessageSource.Win32);
// Create graphics context - OpenGL.
GraphicsContext context = null;
try
{
var wgl = new WglGraphicsContext();
wgl.Init(handle, this);
if (wgl.Valid)
{
context = wgl;
}
}
catch (Exception ex)
{
Engine.Log.Warning($"Couldn't create WGL context, falling back to MESA if possible.\n{ex}", MessageSource.Win32);
}
if (context == null)
{
try
{
var gallium = new GalliumGraphicsContext();
gallium.Init(handle, this);
if (gallium.Valid)
{
context = gallium;
}
}
catch (Exception ex)
{
Engine.SubmitError(new Exception("Couldn't create MESA context.", ex));
}
}
if (context == null)
{
Engine.SubmitError(new Exception("Couldn't create graphics context!"));
return;
}
// Create Emotion representation of the window.
var windowInstance = new Win32Window(handle, context, this);
// Adjust window size to account for DPI scaling of the window frame and optionally DPI scaling of the content area.
// This cannot be done until we know what monitor it was placed on - so it's done post creation.
var rect = new Rect
{
Right = (int)config.HostSize.X,
Bottom = (int)config.HostSize.Y
};
rect.ClientToScreen(windowInstance.Handle);
windowInstance.GetFullWindowRect(ref rect);
User32.SetWindowPos(windowInstance.Handle, IntPtr.Zero,
rect.Left, rect.Top,
rect.Right - rect.Left, rect.Bottom - rect.Top,
WindowPositionFlags.SWP_NOACTIVATE | WindowPositionFlags.SWP_NOZORDER);
Window = windowInstance;
}
/// <inheritdoc />
public override IntPtr GetLibrarySymbolPtr(IntPtr library, string symbolName)
{
return(Kernel32.GetProcAddress(library, symbolName));
}
/// <inheritdoc />
public override IntPtr LoadLibrary(string path)
{
return(Kernel32.LoadLibrary(path));
}