opengl官方文档（api 手册）

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glutWarpPointer warps the pointer’s location.

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void glutWarpPointer(int x, int y);

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x X offset relative to the current window’s origin (upper left).

y Y offset relative to the current window’s origin (upper left).

system dependent ways.

The following is good advice that applies to glutWarpPointer: ‘‘There is seldom any reason for calling this

function. The pointer should normally be left to the user.’’ (from Xlib’s XWarpPointer man page.)

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glutMouseFunc, glutMotionFunc

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Mark J. Kilgard (mjk@sgi.com)

Page 1 July 23, 1997

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glutAddMenuEntry - adds a menu entry to the bottom of the current menu.

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void glutAddMenuEntry(char *name, int value);

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name ASCII character string to display in the menu entry.

value Value to return to the menu’s callback function if the menu entry is selected.

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glutAddSubMenu, glutCreateMenu, glutChangeToMenuEntry, glutRemoveMenuItem

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glutAddSubMenu - adds a sub-menu trigger to the bottom of the current menu.

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void glutAddSubMenu(char *name, int menu);

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name ASCII character string to display in the menu item from which to cascade the sub-menu.

menu Identifier of the menu to cascade from this sub-menu menu item.

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glutAddMenuEntry, glutChangeToSubMenu, glutRemoveItem

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glutBitmapCharacter - renders a bitmap character using OpenGL.

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void glutBitmapCharacter(void *font, int character);

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font Bitmap font to use.

character Character to render (not confined to 8 bits).

A fixed width font with every character fitting in an 8 by 13 pixel rectangle. The exact bitmaps to

be used is defined by the standard X glyph bitmaps for the X font named:

A 10-point proportional spaced Times Roman font. The exact bitmaps to be used is defined by

the standard X glyph bitmaps for the X font named:

GLUT_BITMAP_TIMES_ROMAN_24

A 24-point proportional spaced Times Roman font. The exact bitmaps to be used is defined by

the standard X glyph bitmaps for the X font named:

GLUT_BITMAP_HELVETICA_10

A 10-point proportional spaced Helvetica font. The exact bitmaps to be used is defined by the

standard X glyph bitmaps for the X font named:

A 18-point proportional spaced Helvetica font. The exact bitmaps to be used is defined by the

Page 1 July 23, 1997