Miscellaneous Python Demos
David Kosbie, 15-110

• (Non)-Resizable Windows
  non-resizable window and resizable window (with sizeChanged)
  See resizableDemo.py and nonResizableDemo.py
  
  
• Mouse Events
  mousePressed, mouseMoved, mouseReleased, with left or right button, and with ctrl and shift
  See mouseEventsDemo.py
  
  
• Mouse Motion Events
  mouseMotion (without button pressed), mousePressed, mouseMoved, mouseReleased, with left or right button, and with ctrl and shift
  See mouseMotionEventsDemo.py
  
  
• Key Events
  keyPressed, keyReleased with ctrl and shift
  See keyEventsDemo.py
  
  
• Images
  view in canvas, read from file, read from the web, with transparent pixels, get size, resize (zoom and subsample), read/write pixels, base64 encoding (create from file, view as image)
  Requires:  sampleImage1.gif
  See imagesDemo1.py (read from file)
  See imagesDemo2.py (read from web)
  See imagesDemo3a.py and imagesDemo3b.py, (write base64, read from base64)
  See imagesDemo4.py (read/write pixels)
  
  
• Delta (Efficient) Graphics
  Return values from create_abc(), no redrawAll(), canvas.coords() and canvas.itemconfig()
  See deltaGraphicsDemo1.py (without delta graphics)
  See deltaGraphicsDemo2.py (with delta graphics)
  
  
• Semi-Transparent-Stipple
  Tkinter does not have alpha (semi-transparent) graphics, but it does have something sort of like that with semi-transparent stipples, which aren't great but are better than nothing.
  See semi-transparent-stipple-demo
  
  
• Modules
  Use modules to organize large code base
  See modulesDemo1.py (no modules)
  See modulesDemo2.py with faceDemo.py (with modules)
  
  
• Structs
  Use "structs" instead of dictionaries to organize "objects"
  Extends Modules example
  See structsDemo.py with faceDemoWithStruct.py (with modules and structs)
  
  
• Classes
  Use classes instead of structs or dictionaries to organize "objects" with their "behaviors"
  Extends Modules example and Structs example
  See classDemo.py with faceDemoWithClass.py (with modules and structs)
  
  
• Winsound
  (On Windows only!)  play sounds synchronously, asynchronously, or in a loop
  See winsoundDemo.py
  
  
• Simulation
  Record a process step-by-step, play back each step in response to keypresses.
  See selectionSortSim.py
  
  
• Buttons
• Simple Buttons
  approach #1: with global canvas
  approach #2: with local function and closure
  See button-demo1.py
  
  
• Buttons in a Row
  Simple buttons now in a horizontal row at the top
  (using a gridded frame)
  (uses same buttons from button-demo1.py)
  See button-demo2.py
  
  
• Buttons in a Canvas
  button in a canvas (rather than next to a canvas)
  See button-demo3.py
  
  
• Button with an Image
  See button-demo4.py
  
  
• Dialogs
• Standard Dialogs
  tkMessageBox: Info box, warning box, error box, and question box
  tkSimpleDialog: Askstring box
  See dialogs-demo1.py
  
  
• Modal Password Dialog
  modal dialog, text input field, and hidden password
  See dialogs-demo2.py
  
  
• Possible Future Topics:
• exe packaging (http://www.py2exe.org/index.cgi/Tutorial)
• more gui widgets (menus, sliders, scrollbars, etc)
• shell scripting
• writing applets (web-browser-based programs)
• writing web-based client-server apps
• using Google API’s
• scripting OpenOffice (or some other apps)
• other topics?