Passing a hDC to a linked DLL file and How to make VB Compatable C++ functions

[kedaman]

you use declare statement:

Declare Function FunctionName Lib "dllname" (byval a as Long, byval b as Long, byval Whatever as Any....) As Long

You could check out the file Win32api in your winapi dir, which has a lot of declare statements you can have as samples.

And yes you can pass hDC to modify the image.