Re: Global shortcut
Posted: Thu Feb 09, 2012 5:25 pm
Thank you Remi for your link. My first own Google searches only found global hotkey examples
which are bound to the desktop manager. So I thought the only way to realize a solution would
have been to write separate routines for the desktop managers KDE 3 + 4, Gnome 2 + 3 + Unity,
Xfce, LXDE...
But since all distributions are currently still using XWindow (until some of them will change to
Wayland) using XWindow API functions should be the most practical approach. Therefore I tried
to convert the posted C code to PB. Currently I have tested this code to detect the newly
established hotkey <Ctrl> + <Shift> + <K> successfully in Ubuntu 11.10, Kubuntu 11.10 and Linux
Mint 12. For non-Ubuntu based distributions (or pre 11.04 Ubuntu distributions) the path to the
Xlibs has to be changed!
Update: I have changed the ImportC statements so that the example code should run without modification on different Linux distributions. And keep in mind that during the test the NumLock key has to be switched off because otherwise the HotKey combination won't be recognized because the NumLock key will be recognized as "pressed"!
Furthermore I had to modify the link to the C source code of the original author.
which are bound to the desktop manager. So I thought the only way to realize a solution would
have been to write separate routines for the desktop managers KDE 3 + 4, Gnome 2 + 3 + Unity,
Xfce, LXDE...
But since all distributions are currently still using XWindow (until some of them will change to
Wayland) using XWindow API functions should be the most practical approach. Therefore I tried
to convert the posted C code to PB. Currently I have tested this code to detect the newly
established hotkey <Ctrl> + <Shift> + <K> successfully in Ubuntu 11.10, Kubuntu 11.10 and Linux
Mint 12. For non-Ubuntu based distributions (or pre 11.04 Ubuntu distributions) the path to the
Xlibs has to be changed!
Code: Select all
; Converted from cheshirekow's C-Code:
; http://lists.freedesktop.org/archives/xorg/2010-October/051373.html
EnableExplicit
#ControlMask = 1 << 2
#GrabModeAsync = 1
#KeyPress = 2
#KeyPressMask = 1
#ShiftMask = 1
#XK_K = $004B
ImportC "-lX11"
XCloseDisplay(*Display)
XDefaultRootWindow(*Display)
XGrabKey(*Display, KeyCode.I, Modifiers.I, GrabWindow.I, OwnerEvents.i, PointerMode.I, KeyboardMode.I)
XKeysymToKeycode(*Display, KeySym.I)
XNextEvent(*Display, *XEvent)
XOpenDisplay(*Display)
XSelectInput(*Display, Window.I, EventMask.I)
XUngrabKey(*Display, KeyCode.I, Modifiers.I, GrabWindow.I)
EndImport
ImportC "-lxcb" : EndImport
ImportC "-lXau" : EndImport
ImportC "-lXdmcp" : EndImport
Structure XEvent
EventType.I
SendEvent.I
*Display
EventWindow.I
RootWindow.I
ChildWindow.I
Time.I
x.I
y.I
x_root.I
y_root.I
Mask.I
KeyCode.I
SameScreen.I
EndStructure
Define *Display
Define Event.XEvent
Define KeyCode.I
Define RootWindow.I
*Display = XOpenDisplay(0)
If *Display
RootWindow = XDefaultRootWindow(*Display)
If RootWindow
KeyCode = XKeysymToKeycode(*Display, #XK_K)
XGrabKey(*Display, KeyCode, #ControlMask | #ShiftMask, RootWindow, #False, #GrabModeAsync, #GrabModeAsync)
XSelectInput(*Display, RootWindow, #KeyPressMask)
Repeat
XNextEvent(*Display, @Event)
If Event\EventType = #KeyPress
MessageRequester("Info", "Global Hotkey <Ctrl> + <Shift> + <K> detected and removed!")
XUngrabKey(*Display, KeyCode, #ControlMask | #ShiftMask, RootWindow)
Break
EndIf
ForEver
XCloseDisplay(*Display)
EndIf
EndIfFurthermore I had to modify the link to the C source code of the original author.
