//Global
HDC hDc;
HGLDC hRc;
//in Win Proc under WM_CREATE :
case WM_CREATE:
{
hDc = GetDC(hWnd);
hRc = wglCreateContext(hDc);
wglMakeCurrent(hDc,hRc);
glClearColor(0.0f,0.0f,0.0f,0.0f);
glClear(GL_COLOR_BUFFER_BIT);
glBegin(GL_TRIANGLE);
glVertex3f(-1.0,0.0f,0.0f);
glVertex3f(0.0,1.0f,0.0f);
glVertex3f(1.0,0.0f,0.0f);
glEnd();
}
break;
//At WM_DESTROY
case WM_DESTROY :
{
wglMakeCurrent(NULL,NULL);
wglDeleteContext(hRc);
ReleaseDC(hWnd,hDc);
}
break; is this enough ??
Author
is this enouth to start a triangle in opengl when a window is open ?? is it reliable ?? please help .. what about pixelformating ? i dunno why that is needed can someone explain me ??
you should go to the Forums->openGL->NeHe Tutorials section of this site. it has everything that you need.
inedentally unless you are calling it elsewhere, you are not calling SwapBuffer() so you won't see anything.
-me
[edited by - Palidine on May 31, 2002 7:00:51 PM]
inedentally unless you are calling it elsewhere, you are not calling SwapBuffer() so you won't see anything.
-me
[edited by - Palidine on May 31, 2002 7:00:51 PM]
Author
quote:Original post by Palidine
you should go to the Forums->openGL->NeHe Tutorials section of this site. it has everything that you need.
inedentally unless you are calling it elsewhere, you are not calling SwapBuffer() so you won''t see anything.
-me
[edited by - Palidine on May 31, 2002 7:00:51 PM]
you won''t see anytihgn until you SwapBuffer() ?? so everytime i''m drawing , i''m drawing it somewhere else to later SwapBuffer() again to see it ?
no, you render the whole frame and THEN SwapBuffer(). since you were just drawing one triangle i suggested that i didn''t see the SwapBuffer.
but i digress. just start going through the NeHe tutorials. they are very clear. in fact the first tutorial is drawing a triangle.
-me
but i digress. just start going through the NeHe tutorials. they are very clear. in fact the first tutorial is drawing a triangle.
-me
Author
quote:Original post by Palidine
no, you render the whole frame and THEN SwapBuffer(). since you were just drawing one triangle i suggested that i didn''t see the SwapBuffer.
but i digress. just start going through the NeHe tutorials. they are very clear. in fact the first tutorial is drawing a triangle.
-me
i know but he adds to many error cheking... i just wnat to know if it run that way that was all thx for the reply
errm, error checking is a GOOD thing, better to much on init than too little, you dont want your program falling over in a big heap, never assume its going to work, thats VERY poor programming practise..
This topic is closed to new replies.
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