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.");
}
