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Solution How to learn graphical part of C++?

  #1  
Oct 9th, 2004
dear respected.......


would u plz help me to learn graphics in C++.Like drawing lines,circles,ellips etc.

Wish u all the best :mrgreen:
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Re: How to learn graphical part of C++?

  #2  
Oct 9th, 2004
>would u plz help me to learn graphics in C++
C++ doesn't support graphics natively. You need to choose a graphical library or API before someone can help you with it. A few good starters are Allegro, Qt, and SDL. A quick google search will give you reams of information on them.
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Re: How to learn graphical part of C++?

  #3  
Oct 10th, 2004
Look in the tutorial forum at dani too and google
See what you can, remember what you need

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Solution Re: How to learn graphical part of C++?

  #4  
Oct 10th, 2004
I know Narue will smile, but here I go again. There is a thing called BCX for free out there, that will translate rather simple basic like code to C, or with the $CPP directive to C++ code. A good way to at least study Win32 API calls.

To draw a red line from point (x=25,y=15) to point x=400,y=350) use the BCX basic code:
<code>BCX_LINE(Form1,25,15,400,350,Red)</code>This will translate to <code>#define Red RGB (255,0,0)
int BCX_Line (HWND,int,int,int,int,int=0,HDC=0);

int BCX_Line (HWND Wnd,int x1,int y1,int x2,int y2,int Pen,HDC DrawHDC)
{
int a,b=0;
HPEN hOPen;

HPEN hNPen=CreatePen(PS_SOLID,1,Pen);
if(!DrawHDC) DrawHDC=GetDC(Wnd),b=1;
hOPen=SelectObject(DrawHDC,hNPen);
MoveToEx(DrawHDC,x1,y1,NULL);
a = LineTo(DrawHDC,x2,y2);
DeleteObject(SelectObject(DrawHDC,hOPen));
if(b) ReleaseDC(Wnd,DrawHDC);
return a; // true or false
}
</code>which are mostly API calls.

Hope I did this code field stuff correctly!
May 'the Google' be with you!
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Solution Re: How to learn graphical part of C++?

  #5  
Oct 10th, 2004
Okay, I fugged up the code field thing, here it is again ...

I know Narue will smile, but here I go again. There is a thing called BCX for free out there, that will translate rather simple basic like code to C, or with the $CPP directive to C++ code. A good way to at least study Win32 API calls.

To draw a red line from point (x=25,y=15) to point x=400,y=350) use the BCX basic code:
BCX_LINE(Form1,25,15,400,350,Red)
This will translate to
#define Red RGB (255,0,0)
int BCX_Line (HWND,int,int,int,int,int=0,HDC=0);

int BCX_Line (HWND Wnd,int x1,int y1,int x2,int y2,int Pen,HDC DrawHDC)
{
  int a,b=0;
  HPEN hOPen;

  HPEN hNPen=CreatePen(PS_SOLID,1,Pen);
  if(!DrawHDC) DrawHDC=GetDC(Wnd),b=1;
  hOPen=SelectObject(DrawHDC,hNPen);
  MoveToEx(DrawHDC,x1,y1,NULL);
  a = LineTo(DrawHDC,x2,y2);
  DeleteObject(SelectObject(DrawHDC,hOPen));
  if(b) ReleaseDC(Wnd,DrawHDC);
  return a;  // true or false
} 
which are mostly API calls.

Hope I did this code field stuff correctly!
May 'the Google' be with you!
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