GetDCEx function user32
The GetDCEx function retrieves a handle to a device context (DC) for the client area of a specified window or for the entire screen. You can use the returned handle in subsequent GDI functions to draw in the DC. The device context is an opaque data structure, whose values are used internally by GDI.
HDC GetDCEx(
HWND hWnd,
HRGN hrgnClip,
DWORD flags
);
Implementation
int GetDCEx(int hWnd, int hrgnClip, int flags) =>
_GetDCEx(hWnd, hrgnClip, flags);