1. Douglas Boling President Boling Consulting Inc. SESSION CODE: WEM304

9. //------------------------------------------------- // DoCreateMain - Process WM_CREATE message // LRESULT DoCreateMain (HWND hWnd, UINT wMsg, WPARAM wParam, LPARAM lParam) { EnableGestures (hWnd, TGF_GID_ALL, TGF_SCOPE_PROCESS); return 0; }

11. typedef struct tagGESTUREINFO { UINT cbSize;// Size of structure DWORD dwFlags;// GF_BEGIN/GF_INERTIA/GF_END DWORD dwID;// Gesture ID HWND hwndTarget;// Target Window handle POINTS ptsLocation;// Location of gesture DWORD dwInstanceID;// Reserved DWORD dwSequenceID; // Timestamp of Gesture ULONGLONG ullArguments; // Args. See next slide UINT cbExtraArguments; // Possible extra data } GESTUREINFO, *PGESTUREINFO;

17. typedef struct tagWAGI { size_t cbSize; // Size of structure DWORD dwFlags; // See next slide UINT nOwnerAnimateMessage; // ID of WM_USER msg or 0 UINT nAnimateStatusMessage; // ID of WM_USER msg or 0 HBRUSH hExtentBrush; // Reserved UINT nItemHeight; // Used for snapping to item UINT nItemWidth; // Used for snapping to item BYTE bHorizontalExtent; // Scroll ext past last item BYTE bVerticalExtent; // Scroll ext past last item } WAGINFO, *LPWAGINFO;

22. typedef struct tagPHYSICSENGINEINIT { DWORD cbSize; // Size of the structure DWORD dwEngineType; // Reserved, set to zero DWORD dwFlags; // Specifies system or User time base LONG lInitialVelocity; // Initial velocity in Pixels/sec DWORD dwInitialAngle; // Angle in radians BYTE bXAxisMovementMode; // Horz movement action (Decelerate only opt) BYTE bXAxisBoundaryMode; // Horz boundary action. Bounce/rubber band/None BYTE bYAxisMovementMode; // Vert movement action (Decelerate only opt) BYTE bYAxisBoundaryMode; // Vert boundary action. Bounce/rubber band/None RECT rcBoundary; // Entire movement rectangle SIZE sizeView; // Rectangle of visible region POINT ptInitialPosition; // Initial position in region SIZE sizeItem; // Size of item. Used to snap to item boundary } PHYSICSENGINEINIT; HRESULT CreatePhysicsEngine(PHYSICSENGINEINIT* pEngineInit, HPHYSICSENGINE* phResult);

24. if (gi.dwFlags & (GF_INERTIA | GF_END)) { PHYSICSENGINEINIT pei; memset (&pei, 0, sizeof (pei)); pei.cbSize = sizeof (pei); pei.dwFlags = 0; pei.lInitialVelocity = GID_SCROLL_VELOCITY (gi.ullArguments); pei.dwInitialAngle = GID_SCROLL_ANGLE (gi.ullArguments); pei.bXAxisMovementMode = PHYSICSENGINE_MOVEMENT_MODE_DECELERATE; pei.bXAxisBoundaryMode = PHYSICSENGINE_BOUNDARY_MODE_RUBBERBAND; pei.bYAxisMovementMode = PHYSICSENGINE_MOVEMENT_MODE_DECELERATE; pei.bYAxisBoundaryMode = PHYSICSENGINE_BOUNDARY_MODE_RUBBERBAND; pei.rcBoundary = g_rcWork; pei.sizeView.cx = rectImg.right; pei.sizeView.cy = rectImg.bottom; pei.ptInitialPosition.x = gi.ptsLocation.x; pei.ptInitialPosition.y = gi.ptsLocation.y; pei.sizeItem.cx = 1; pei.sizeItem.cy = 1; hr = CreatePhysicsEngine (&pei, &g_hPEAnimate); SetTimer (hWnd, ID_ANIMATE, 100, NULL); }

25. case WM_TIMER: if (wParam == ID_ANIMATE) { // Query physics engine PHYSICSENGINESTATE state; memset (&state, 0, sizeof (state)); state.cbSize = sizeof (state); QueryPhysicsEngine (g_hPEAnimate, &state); // Update image MoveImg (hWnd, state.ptPosition); // If animation complete, clean up if (state.fComplete) { DestroyPhysicsEngine (g_hPEAnimate); KillTimer (hWnd, 1); } break;

29. Required Slide Track PMs will supply the content for this slide, which will be inserted during the final scrub.

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