Graphics in C++

[Sastraxi]

As you might know I've always been pretty good with graphics in VB. Now that I've stepped the line to C++, it's pretty neat but doesn't come without its difficulties. Say I just wanted to load a bitmap, get its bits, and change them without showing the picture. Or anything, really. What would I need to do this?

[kedaman]

Same api's you've used in vb, LoadImage, BitBlt, Getpixel, SetPixelv...

btw i recommend you learn the language first, there's whole load of new concepts that you should learn before starting with the api's. Have a look at the faq for tutorials

[Sastraxi]

I've read Learning VB5 by that guy with the white toupee hair and glasses 2 times over and I think I understand the whole bit.

[Sastraxi]

Okay, so anyways. I want to create a DC and edit it, etc. What you do in VB is create an StdPicture and then use the LoadBitmap command to get it. What I want to know is what the C++ equivalent is.

[Zaei]

CreateCompatibleDC(), LoadImage(), etc.

Z.

[Sastraxi]

Hmmm. Thanks for that Zaei!

The only thing is I don't know how to declare API calls. I don't even know if I can use them in my console app, but I think I can (WIN32 Console App)

[Zaei]

#include <windows.h>

Then just use them as normal. No individual declarations for us =).

Z.

[SteveCRM]

you see we tell people C++ is hard, but really we're just lazy so one line declares them all for us :p

[Sastraxi]

Wow. Awesome.

[Sastraxi]

Just one question- I want to use GetTickCount but I can't seem to get the right type. It won't cast: "cannot convert from 'unsigned long (__stdcall *)(void)' to 'unsigned long'
This conversion requires a reinterpret_cast, a C-style cast or function-style cast"

[Zaei]

Have to, Have to, HAVE TO add the parens in functions calls. None of this GetTickCount VB stuff. It has to be GetTickCount(), with nothing in the parens.

Z.