glIsEnabled 7IJQQW

[New - Windows 95, OEM Service Release 2]

The gllsEnabled function tests whether a capability is enabled.

GLboolean glIsEnabled(

GLenum cap
);

Parameters

cap

A symbolic constant indicating an OpenGL capability. The following capabilities are accepted:

GL_ALPHA_TEST	See glAlphaFunc3OLHFW4
GL_AUTO_NORMAL	See glEvalCoordJY1DQM
GL_BLEND	See glBlendFuncIXY.WO
GL_CLIP_PLANEi	See glClipPlane6HCR6N
GL_COLOR_MATERIAL	See glColorMaterial2U57YMP
GL_CULL_FACE	See glCullFaceOMBWE
GL_DEPTH_TEST	See glDepthFuncC4GZX and glDepthRange1RRKZ50
GL_DITHER	See glEnable194O61P
GL_FOG	See glFog8KNK3J
GL_LIGHTi	See glLightModel21E1NBY and glLightOXNARM
GL_LIGHTING	See glMaterialECT15., glLightModel21E1NBY, and glLightOXNARM
GL_LINE_SMOOTH	See glLineWidthD7DWCH
GL_LINE_STIPPLE	See glLineStipple7PZ0SH
GL_LOGIC_OP	See glLogicOpN__P0P
GL_MAP1_COLOR_4	See glMap1E5BV.H
GL_MAP1_INDEX	See glMap1E5BV.H
GL_MAP1_NORMAL	See glMap1E5BV.H
GL_MAP1_TEXTURE_COORD_1	See glMap1E5BV.H
GL_MAP1_TEXTURE_COORD_2	See glMap1E5BV.H
GL_MAP1_TEXTURE_COORD_3	See glMap1E5BV.H
GL_MAP1_TEXTURE_COORD_4	See glMap1E5BV.H
GL_MAP1_VERTEX_3	See glMap1E5BV.H
GL_MAP1_VERTEX_4	See glMap1E5BV.H
GL_MAP2_COLOR_4	See glMap2E5BV.I
GL_MAP2_INDEX	See glMap2E5BV.I
GL_MAP2_NORMAL	See glMap2E5BV.I
GL_MAP2_TEXTURE_COORD_1	See glMap2E5BV.I
GL_MAP2_TEXTURE_COORD_2	See glMap2E5BV.I
GL_MAP2_TEXTURE_COORD_3	See glMap2E5BV.I
GL_MAP2_TEXTURE_COORD_4	See glMap2E5BV.I
GL_MAP2_VERTEX_3	See glMap2E5BV.I
GL_MAP2_VERTEX_4	See glMap2E5BV.I
GL_NORMALIZE	See glNormal2NHAN7
GL_POINT_SMOOTH	See glPointSizeHQOGCD
GL_POLYGON_SMOOTH	See glPolygonMode1OYC7V5
GL_POLYGON_STIPPLE	See glPolygonStipple1N7CB5B
GL_SCISSOR_TEST	See glScissorK8Q9S3
GL_STENCIL_TEST	See glStencilFunc1NSO64P and glStencilOp1N11GRZ
GL_TEXTURE_1D	See glTexImage1D1HIX0MK
GL_TEXTURE_2D	See glTexImage2D1HIX0NK
GL_TEXTURE_GEN_Q	See glTexGen3IH49F3
GL_TEXTURE_GEN_R	See glTexGen3IH49F3
GL_TEXTURE_GEN_S	See glTexGen3IH49F3
GL_TEXTURE_GEN_T	See glTexGen3IH49F3

Remarks

The gllsEnabled function returns GL_TRUE if cap is an enabled capability and returns GL_FALSE otherwise.

Error Codes

If an error is generated, glIsEnabled returns zero.

The following are the error codes generated and their conditions.

Error Code	Condition
GL_INVALID_ENUM	cap was not an accepted value.
GL_INVALID_OPERATION	glIsEnabled was called between a call to glBegin and the corresponding call to glEnd.

See Also

glBegin, glEnable, glEnd