Being a long suffering Windows user, I have developed a mouse habit that I would now like to break, relying more on keyboard shortcuts. But the trouble is that every Windows application introduces yet another set of keyboard shortcuts to remember...

This CUFP hovers above other windows and as you switch between applications it displays a relevant list of shortcut reminders.

use strict;
use warnings;

use Tk;
use Win32::API;

# Windows constants
my ($ONTOP, $NOTOP, $TOP) = (-1, -2, 0);
my ($SWP_NOMOVE, $SWP_NOSIZE) = (2, 1);

my $SetWindowPos        = new Win32::API("user32", "SetWindowPos", 'NN
+NNNNN', 'N'); 
my $FindWindow          = new Win32::API("user32", "FindWindow", 'PP',
+ 'N'); 
my $GetForegroundWindow = new Win32::API("user32", "GetForegroundWindo
+w",'','N'); 
my $GetWindowText       = new Win32::API("user32", "GetWindowText",'NP
+I','I');

my $fg = 0; # foreground hWnd

my $flashme = 'Waiting to show shortcut keys';

my $w = new MainWindow;

my $fc = $w->Label(-textvariable => \$flashme, -justify => 'left')->pa
+ck;

my $id = Tk::After->new($w,2000,'repeat',\&showFlashCard);

my $flashcards = {

    'Microsoft Outlook' => qq{Outlook
        CTRL-1 - Mail
        CTRL-2 - Calendar
        CTRL-4 - Task List
        CTRL-Y - Go to Folder...
        CTRL-E - Find...
        ALT-F1 - Toggle Nav Pane
        CTRL-SHIFT-V - Move Items to Folder...
    },
    'SQL Query Analyzer' => qq{Query Analyzer
        CTRL-D - Results as datagrid
        CTRL-T - Results as text
        CTRL-R - Toggle Results Pane
        CTRL-L - Execution Plan
        F8 - Toggle Object Browser
        CTRL-SHIFT-P - Open File
    },
    'Mozilla Firefox' => qq{Mozilla FireFox
        CTRL-L - Location
        CTRL-D - Add Bookmark
        CTRL-B - Bookmarks
    }
    
    
};
# start the UI
MainLoop;

sub showFlashCard {

    my $thisfg = $GetForegroundWindow->Call();

    if ($fg != $thisfg) { # Foreground Window has changed

        $fg = $thisfg;
        
        my $wt=' 'x150;
        my $i = $GetWindowText->Call($fg,$wt,150);
        $wt = substr($wt, 0, $i);

        #warn "$fg\t$wt\n"; # use this to ascertain window text

        for my $re (keys %$flashcards) {
            if ($wt =~ /$re/) {
                $flashme = $flashcards->{$re};
            }
        }
        
    }
    
    # Reestablish Z order
    my $class = "TkTopLevel";
    my $topHwnd = $FindWindow->Call($class, $w->title);
    $topHwnd and $SetWindowPos->Call($topHwnd, $ONTOP, 0, 0, 0, 0, $SW
+P_NOMOVE | $SWP_NOSIZE);
    
}

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In reply to Hovering keyboard shortcut reminders for Win32 apps by EdwardG

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