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

  1. #1

    Thread Starter
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    Can a Linked DLL use a passed hDC to modify an image?

    What is the special way to declaring C++ function so that they can be used within VB?

  2. #2
    transcendental analytic kedaman's Avatar
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    you use declare statement:
    Code:
    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.
    Use
    writing software in C++ is like driving rivets into steel beam with a toothpick.
    writing haskell makes your life easier:
    reverse (p (6*9)) where p x|x==0=""|True=chr (48+z): p y where (y,z)=divMod x 13
    To throw away OOP for low level languages is myopia, to keep OOP is hyperopia. To throw away OOP for a high level language is insight.

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