When you assign a shortcut to a virtual key, you can use the function with a button from the Virtual Shortcut Key window.
Hand:
Pen:
Pen size -/+:
Pen(Mask):
Pen(SingleStroke):
Pen(Mask&SingleStroke):
Pen(Line):
Dropper:
Dropper(Color&Opacity):
Dropper(Color):
Dropper(Display):
Dropper(Current Opacity):
Eraser:
Eraser size -/+:
Eraser(Circle):
Eraser(Box):
Hand (Pressing Down):
Pen (Pressing Down):
Dropper (Pressing Down):
Eraser (Pressing Down):
Switch Layers:
Toggle Auxiliary Layer:
Reflect:
Upside-Down:
Rotate -/+:
Reset Rotate:
Zoom -/+:
Restore Zoom:
Fit to Window:
Range Merge Layers:
Range Copy:
Range Move:
Range Erase:
Range Fill:
Undo:
Toggle Pen Pressure:
Toggle Pen Stabilize:
Save Pen Status:
Restore Pen Status:
Selected Tool Size -/+:
Selected Tool Opacity -/+:
Load Tool Preset 1:
Load Tool Preset 2:
Load Tool Preset 3:
Load Tool Preset 4:
Load Tool Preset 5:
Load Tool Preset 6:
Load Tool Preset 7:
Load Tool Preset 8:
Load Tool Preset 9:
Load Tool Preset 10: