XQueryKeymap − obtain a bit vector for the current state of the keyboard.

Synopsis

XQueryKeymap(display, keys_return)
Display *display;
char keys_return[32];

Arguments

displaySpecifies a connection to an X server; returned from XOpenDisplay(). 

keys_return
Returns an array of bytes that identifies which keys are pressed down. Each bit represents one key of the keyboard.

Description

XQueryKeymap() returns a bit vector for the logical state of the keyboard, where each bit set to 1 indicates that the corresponding key is currently pressed down.  The vector is represented as 32 bytes.  Byte N (from 0) contains the bits for keys 8N to 8N+7 with the least significant bit in the byte representing key 8N.  Note that the logical state may lag the physical state if device event processing is frozen due to a grab. 

See Also

XChangeKeyboardMapping(), XDeleteModifiermapEntry(), XFreeModifiermap(), XGetKeyboardMapping(), XGetModifierMapping(), XInsertModifiermapEntry(), XKeycodeToKeysym(), XKeysymToKeycode(), XKeysymToString(), XLookupKeysym(), XLookupString(), XNewModifierMap, XRebindKeysym(), XRefreshKeyboardMapping(), XSetModifierMapping(), XStringToKeysym(). 

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