glutGetModifiers(3GLUT) GLUT glutGetModifiers(3GLUT)NAME
glutGetModifiers - returns the modifier key state when certain callbacks were generated.
SYNTAX
#include <GLUT/glut.h>
int glutGetModifiers(void);
DESCRIPTION
glutGetModifiers returns the modifier key state at the time the input event for a keyboard, special, or mouse callback is generated. This
routine may only be called while a keyboard, special, or mouse callback is being handled. The window system is permitted to intercept win-
dow system defined modifier key strokes or mouse buttons, in which case, no GLUT callback will be generated. This interception will be
independent of use of glutGetModifiers.
The bitmask components of the returned integer value are:
GLUT_ACTIVE_SHIFT
Set if the Shift modifier or Caps Lock is active.
GLUT_ACTIVE_CTRL
Set if the Ctrl modifier is active.
GLUT_ACTIVE_ALT
Set if the Alt modifier is active.
SEE ALSO
glutSpecialFunc, glutKeyboardFunc, glutMouseFunc
AUTHOR
Mark J. Kilgard (mjk@nvidia.com)
GLUT 3.7 glutGetModifiers(3GLUT)
Check Out this Related Man Page
glutKeyboardFunc(3GLUT) GLUT glutKeyboardFunc(3GLUT)NAME
glutKeyboardFunc - sets the keyboard callback for the current window.
SYNTAX
#include <GLUT/glut.h>
void glutKeyboardFunc(void (*func)(unsigned char key,
int x, int y));
ARGUMENTS
func The new keyboard callback function.
DESCRIPTION
glutKeyboardFunc sets the keyboard callback for the current window. When a user types into the window, each key press generating an ASCII
character will generate a keyboard 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 call-
backs.
During a keyboard callback, glutGetModifiers may be called to determine the state of modifier keys when the keystroke generating the call-
back occurred.
Use glutSpecialFunc for a means to detect non-ASCII key strokes.
SEE ALSO
glutKeyboardUpFunc, glutSpecialFunc, glutCreateWindow, glutMouseFunc, glutSpaceballButtonFunc, glutButtonBoxFunc, glutTabletButtonFunc,
glutGetModifiers
AUTHOR
Mark J. Kilgard (mjk@nvidia.com)
GLUT 3.7 glutKeyboardFunc(3GLUT)
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