public static void DeleteContext(ContextHandle context)
{
if (_contexts.ContainsKey(context.HDC))
{
_contexts.Remove(context.HDC);
}
if (context != ContextHandle.Zero)
{
Win32Helper.DeleteContext(context.Handle);
}
if (_contexts.Count == 0)
{
GLFunc.Dispose();
}
}
protected override IntPtr WndProc(IntPtr hwnd, int msg, IntPtr wParam, IntPtr lParam, ref bool handled)
{
if (!_isDisposed)
{
switch ((WindowMessage)msg)
{
case WindowMessage.PAINT:
// Block background color updates
var paint = new PAINTSTRUCT(32);
Win32Helper.BeginPaint(Handle, ref paint);
Win32Helper.EndPaint(Handle, ref paint);
_Refresh();
break;
}
}
return(base.WndProc(hwnd, msg, wParam, lParam, ref handled));
}
protected override void DestroyWindowCore(HandleRef hwnd)
{
Win32Helper.DestroyWindow(hwnd.Handle);
}
public static void MakeCurrentContext(ContextHandle context)
{
Win32Helper.MakeCurrent(context.HDC, context.Handle);//激活当前渲染上下文
_current = context;
}
