isValid

fnbool isValid(FltkGlWindow window) @safe nothrow @nogc

Checks if a GL window handle is valid (non-null).

window GL window handle to check

true if handle is valid

fnbool isValid(FltkGlContext context) @safe nothrow @nogc

Checks if a GL context handle is valid (non-null).

context GL context handle to check

true if handle is valid