table of contents
| GLUTGET(3) | Library Functions Manual (local) | GLUTGET(3) |
NAME¶
glutGet — Allows
you to query some general state/option variables.
LIBRARY¶
OpenGLUT - state
SYNOPSIS¶
#include
<openglut.h>
int
glutGet(GLenum
eWhat);
PARAMETERS¶
eWhat
Enumerated parameter ID.
DESCRIPTION¶
This function permits you to query for the current value of many different OpenGLUT state variables. The current list is:
-
GLUT_ACTION_ON_WINDOW_CLOSE
Allows you to do something other than die if the user closes one of your windows.
-
GLUT_DISPLAY_MODE_POSSIBLE
-
GLUT_ELAPSED_TIME
-
GLUT_INIT_DISPLAY_MODE
-
GLUT_INIT_STATE
-
GLUT_INIT_WINDOW_HEIGHT
-
GLUT_INIT_WINDOW_WIDTH
-
GLUT_INIT_WINDOW_X
-
GLUT_INIT_WINDOW_Y
-
GLUT_MENU_NUM_ITEMS
-
GLUT_RENDERING_CONTEXT
Allows you to specify context-sharing when you open new windows.
-
GLUT_SCREEN_HEIGHT
-
GLUT_SCREEN_HEIGHT_MM
Height in millimeters.
-
GLUT_SCREEN_WIDTH
-
GLUT_SCREEN_WIDTH_MM
Width in millimeters.
-
GLUT_VERSION
-
GLUT_WINDOW_ACCUM_ALPHA_SIZE
-
GLUT_WINDOW_ACCUM_BLUE_SIZE
-
GLUT_WINDOW_ACCUM_GREEN_SIZE
-
GLUT_WINDOW_ACCUM_RED_SIZE
-
GLUT_WINDOW_ALPHA_SIZE
-
GLUT_WINDOW_BLUE_SIZE
-
GLUT_WINDOW_BORDER_WIDTH
-
GLUT_WINDOW_BUFFER_SIZE
-
GLUT_WINDOW_COLORMAP_SIZE
-
GLUT_WINDOW_CURSOR
-
GLUT_WINDOW_DEPTH_SIZE
-
GLUT_WINDOW_DOUBLEBUFFER
-
GLUT_WINDOW_FORMAT_ID
System dependant.
-
GLUT_WINDOW_GREEN_SIZE
-
GLUT_WINDOW_HEADER_HEIGHT
-
GLUT_WINDOW_HEIGHT
-
GLUT_WINDOW_NUM_CHILDREN
-
GLUT_WINDOW_NUM_SAMPLES
-
GLUT_WINDOW_PARENT
-
GLUT_WINDOW_RED_SIZE
-
GLUT_WINDOW_RGBA
-
GLUT_WINDOW_STENCIL_SIZE
-
GLUT_WINDOW_STEREO
-
GLUT_WINDOW_WIDTH
-
GLUT_WINDOW_X
-
GLUT_WINDOW_Y
Most of the above are very obvious, and so full documentation is postponed for now.
TODO¶
Go back and flesh out the above list.
This function is a bit messy, especially the WINCE part. Fix.
Lots of code uses return to hop out. Since it's such a sprawling function, it's easy to be in the middle and not be 100% sure if there's anything important at the end of the function, or if it is safe to just "drop out" of the current case and head for the bottom.
Causes crashes (assertion failure) if you call this before having called glutInit()---other than GLUT_INIT_STATE and GLUT_ELAPSED_TIME. Because various things can cause OpenGLUT to become deinitialized, we should probably either return default values of some kind or do minimal initialization if we are called without proper initialization.
SEE ALSO¶
glutSetOption(3) glutDeviceGet(3) glutGetModifiers(3) glutLayerGet(3)