glutKeyboardUpFunc.man
上传用户:xk288cn
上传日期:2007-05-28
资源大小:4876k
文件大小:2k
- ."
- ." Copyright (c) Mark J. Kilgard, 1998.
- ."
- .TH glutKeyboardUpFunc 3GLUT "3.7" "GLUT" "GLUT"
- .SH NAME
- glutKeyboardUpFunc - sets the keyboard up (key release) callback for the current window.
- .SH SYNTAX
- .nf
- .LP
- void glutKeyboardUpFunc(void (*func)(unsigned char key,
- int x, int y));
- .fi
- .SH ARGUMENTS
- .IP fIfuncfP 1i
- The new keyboard up callback function.
- .SH DESCRIPTION
- glutKeyboardFunc sets the keyboard up (key release) callback for the current window.
- When a user types into the window, each key release matching an ASCII
- character will generate a keyboard up callback. The key callback parameter
- is the generated ASCII character. The state of modifier keys such as Shift
- cannot be determined directly; their only effect will be on the returned
- ASCII data. The x and y callback parameters indicate the mouse location
- in window relative coordinates when the key was pressed. When a new
- window is created, no keyboard callback is initially registered, and ASCII
- key strokes in the window are ignored. Passing NULL to
- glutKeyboardFunc disables the generation of keyboard callbacks.
-
- During a keyboard up callback, glutGetModifiers may be called to
- determine the state of modifier keys when the keystroke generating the
- callback occurred.
-
- To avoid the reporting of key release/press pairs due to auto
- repeat, use glutIgnoreKeyRepeat to ignore auto repeated keystrokes.
-
- There is no guarantee that the keyboard press callback will match
- the exact ASCII character as the keyboard up callback. For example,
- the key down may be for a lowercase b, but the key release may
- report an uppercase B if the shift state has changed. The same
- applies to symbols and control characters. The precise behavior
- is window system dependent.
-
- Use glutSpecialUpFunc for a means to detect non-ASCII key
- releases.
- .SH SEE ALSO
- glutKeyboardFunc, glutSpecialUpFunc, glutSpecialFunc, glutCreateWindow, glutMouseFunc, glutSpaceballButtonFunc, glutButtonBoxFunc, glutTabletButtonFunc, glutGetModifiers, glutIgnoreKeyRepeat
- .SH AUTHOR
- Mark J. Kilgard (mjk@nvidia.com)