Is it possible to write non-blocking calls (calls that don't wait for the called function to finish before moving on?) within VB?
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Is it possible to write non-blocking calls (calls that don't wait for the called function to finish before moving on?) within VB?
Nope
Ok, if i pass a hDC to a C++ DLL, will it be able to use that to alter a picture box from within the VB form? (forcing me to write a non-blocking call in C)
Yes if you refresh the picturebox. since the DC is attached to the bitmap you have in the picturebox.