07/11/21 20:58:36
>>321
お前英語苦手だろｗ
もう少し詳しく説明されてる古いWin32SDKヘルプの説明を貼ってやろう
> Handle to the device context to draw in. If this parameter is NULL, use the default device context.
> This parameter is used by some common controls to enable drawing in a device context other than the default device context.
> Other windows can safely ignore this parameter.