How to learn graphical part of C++?

[mishu1516]

dear respected.......

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

Wish u all the best :mrgreen:

[Narue]

>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.

[FireNet]

Look in the tutorial forum at dani too ;) and google

[vegaseat]

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!

[vegaseat]

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!