GUI app and winAPI calls

[aurel]

@mnrvovrfc

What you're trying to do is difficult

In fact is not ...another thing is QB64 in general is not used very much for GUI winapi programming
and ther is included old WNDCLASSA structure
soe thinngs are screwed when i first time see this code , like LoadCursorW ..why not LoadCursorA
maybe is a way to use different headers much modern