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Dec 13th, 2001, 08:31 AM
#1
Thread Starter
Good Ol' Platypus
Graphics in C++
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?
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(Just a heads-up)
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Dec 13th, 2001, 09:05 AM
#2
transcendental analytic
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
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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Dec 13th, 2001, 03:59 PM
#3
Thread Starter
Good Ol' Platypus
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.
All contents of the above post that aren't somebody elses are mine, not the property of some media corporation.
(Just a heads-up)
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Dec 13th, 2001, 06:45 PM
#4
Thread Starter
Good Ol' Platypus
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.
All contents of the above post that aren't somebody elses are mine, not the property of some media corporation.
(Just a heads-up)
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Dec 13th, 2001, 07:51 PM
#5
CreateCompatibleDC(), LoadImage(), etc.
Z.
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Dec 13th, 2001, 08:28 PM
#6
Thread Starter
Good Ol' Platypus
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)
All contents of the above post that aren't somebody elses are mine, not the property of some media corporation.
(Just a heads-up)
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Dec 13th, 2001, 09:17 PM
#7
#include <windows.h>
Then just use them as normal. No individual declarations for us =).
Z.
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Dec 13th, 2001, 10:43 PM
#8
Frenzied Member
you see we tell people C++ is hard, but really we're just lazy so one line declares them all for us 
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Dec 14th, 2001, 11:19 PM
#9
Thread Starter
Good Ol' Platypus
All contents of the above post that aren't somebody elses are mine, not the property of some media corporation.
(Just a heads-up)
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Dec 14th, 2001, 11:26 PM
#10
Thread Starter
Good Ol' Platypus
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"
All contents of the above post that aren't somebody elses are mine, not the property of some media corporation.
(Just a heads-up)
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Dec 14th, 2001, 11:54 PM
#11
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.
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