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C++ Array for DLL

lee_baby_simms · 2004-03-30 10:14:29

I'm trying to write a dll in visual c++ for use in vb6 that will search a grayscaled bitmap of a wave and return x,y coordinates responding to the waves position. it will search the pixels in rows and columns with 0=black and 255=white.(black being the wave and white being the background) i'm really stuck on this so if…

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30-03-2004 11:14am

#1

lee_baby_simms

Registered Users Posts: 3,374 ✭✭✭

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I'm trying to write a dll in visual c++ for use in vb6 that will search a grayscaled bitmap of a wave and return x,y coordinates responding to the waves position.

it will search the pixels in rows and columns with 0=black and 255=white.(black being the wave and white being the background)

i'm really stuck on this so if anyone has any ideas i would appreciate them.

thanks.

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#2 30-03-2004 11:55am
ressem

Registered Users Posts: 2,426 ✭✭✭

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Posts: 2383

Use SAFEARRAY?
I'm not great in this area, but

step by step example of a more complicated structure at
http://support.microsoft.com/default.aspx?scid=http://support.microsoft.com:80/support/kb/articles/Q171/5/83.ASP&NoWebContent=1

-- extract --
REFERENCES
Microsoft Visual C++ Help on SAFEARRAY and related reading

Microsoft Visual Basic file: VB4DLL.TXT

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#3 31-03-2004 11:01am
casper-

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Posts: 391

yuP .. welcome to the wonderful world of VARIANTs. There is a nice little wrapper class on CodeProject as well.

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