MaskBlt

Undocumented in source but is binding to Windows. You might be able to learn more by searching the web for its name.
nothrow extern (Windows)
BOOL
MaskBlt
(
HDC
,
int
,
int
,
int
,
int
,
HDC
,
int
,
int
,
HBITMAP
,
int
,
int
,
DWORD
)

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