XtKeyProc()XtKeyProc()NameXtKeyProc - interface definition for keycode-to-keysym translation pro‐
cedure.
Synopsis
typedef void (*XtKeyProc)(Display *, KeyCode, Modifiers, Modifiers *,
KeySym *);
Display *display;
KeyCode keycode;
Modifiers modifiers;
Modifiers *modifiers_return;
KeySym *keysym_return;
Inputs
display Specifies the display that the keycode is from.
keycode Specifies the keycode that is to be translated.
modifiers Specifies the mask that indicates what modifier keys (Shift,
Meta, Control, etc.) are pressed.
Outputs
modifiers_return
Returns a mask that specifies the modifier keys that the
function examined in making the conversion.
keysym_return
Returns the resulting keysym.
Description
An XtKeyProc is registered in a call to XtSetKeyTranslator() and is
invoked explicitly by a call to XtTranslateKeycode() and automatically
by the Translation Manager in order to convert incoming keycodes to
keysyms.
An XtKeyProc must convert the keycode and modifiers into a keysym and
return that keysym in keysym_return. It should return the modifiers
that it considers in its translation in modifiers_return. The value
returned in this argument will be a constant for any given XtKeyProc.
An XtKeyProc must be implemented so that multiple calls with the same
display, keycode, and modifiers arguments will return the same result
until either a new case converter (an XtCaseProc) is registered or a
MappingNotify event is received.
UsageXtTranslateKey() is the default XtKeyProc. It should be sufficient for
all applications except those that use non-standard keysyms.
When writing an XtKeyProc, you will probably need to call XtConvert‐
Case(), and XtGetKeysymTable(). You may also want to invoke XtTrans‐
lateKey() directly to translate the standard keysyms.
See AlsoXtConvertCase(1), XtGetKeysymTable(1), XtKeysymToKeycodeList(1), XtReg‐
isterCaseConverter(1), XtSetKeyTranslator(1), XtTranslateKey(1),
XtTranslateKeycode(1).
Xt - Keyboard Handling XtKeyProc()
