PDC09 – Pre-Conference – Windows Bootcamp Part 8 – Multi-Touch

Architecture

• Handled using a Driver Model that is implemented by the partners
• Based on WM_Messages that are exchanged by the application and the Multi-touch Hardware

Development Tiers

• Good
  • Everything that comes for free
  • APIs
    • Panning/Zoom gestures
    • Right-click Gestures
  • Native Win32
    • Controls with standard scrollbars
  • WPF4
    • Click Events
    • ScrollViewer
  • WinForms
    • Controls with standard scrollbars
• Better
  • Using the API’s to get the application more interesting
  • Using the Microsoft Touch Pack
• Best
  • Everything done before and even handle events that the Multi-touch supports

Coding with MultiTouch

• Gestures
  • Native
  • .NET 4.0 / WPF
  • .NET 3.5
• Raw Touch
  • Native
  • .NET 4.0 / WPF
  • Silverlght
  • .NET 3.5
• Manipulation
  • Native
  • .NET 4.0 / WPF
  • .NET 3.5
• Inertia
  • Native
  • .NET 4.0 / WPF
  • .NET 3.5

Gestures

• One or two fingers “actions”
• Pre-defined in the platform
• On by default in Windows 7
• Using WM_Gestures

Touch

• Using WM_Touch
• Similar to WM_Gestures but just a lot more of them
• We need to opt-in to have Touch capabilities
• In case of using Touch we won’t get Gestures any more, just Raw touch