SIGGRAPH '97

Font and Text functions

example from Microsoft Developer Studio topic wglUseFontBitmaps

HDC    hdc;  
HGLRC  hglrc; 
 
// create a rendering context 
hglrc = wglCreateContext (hdc); 
 
// make it the calling thread's current rendering context 
wglMakeCurrent (hdc, hglrc); 
 
// now we can call OpenGL API 
 
// make the system font the device context's selected font 
SelectObject (hdc, GetStockObject (SYSTEM_FONT)); 
 
// create the bitmap display lists 
// we're making images of glyphs 0 thru 255 
// the display list numbering starts at 1000, an arbitrary choice 
wglUseFontBitmaps (hdc, 0, 255, 1000); 
 
// display a string: 
// indicate start of glyph display lists 
glListBase (1000); 
// now draw the characters in a string 
glCallLists (24, GL_UNSIGNED_BYTE, "Hello Win32 OpenGL World"); 

example from Microsoft Developer Studio topic wglUseFontOutlines

HDC    hdc;  // A TrueType font has already been selected  
HGLRC  hglrc; 
GLYPHMETRICSFLOAT agmf[256]; 
 
// Make hglrc the calling thread's current rendering context 
wglMakeCurrent(hdc, hglrc); 
 
// create display lists for glyphs 0 through 255 with 0.1 extrusion 
// and default deviation. The display list numbering starts at 1000 
// (it could be any number) 
wglUseFontOutlines(hdc, 0, 255, 1000, 0.0f, 0.1f,  
            WGL_FONT_POLYGONS, &agmf); 
 
// Set up transformation to draw the string 
glLoadIdentity(); 
glTranslate(0.0f, 0.0f, -5.0f) 
glScalef(2.0f, 2.0f, 2.0f); 
 
// Display a string 
glListBase(1000); // Indicates the start of display lists for the glyphs 
// Draw the characters in a string 
glCallLists(24, GL_UNSIGNED_BYTE, "Hello Win32 OpenGL World."); 

Overlay, Underlay and Main Plane functions

Miscellaneous Functions