CBCGPGestureBase

Detailed Description

Using this class a developer can add gestures support in few lines of code:

just derive any class from CBCGPGestureBase, setup CBCGPGestureConfig, add WM_GESTURE message handler and override OnGestureEvent* virtual methods.

GesturesDemo sample shows how to add the gestures support to your class.

Example

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class CGestureWindow : public CWnd,

public CBCGPGestureBase

{

virtual BOOL OnGestureEventPan(const CPoint& ptFrom, const CPoint& ptTo, CSize& sizeOverPan);

afx_msg LRESULT OnGesture(WPARAM wp, LPARAM lp);

afx_msg int OnCreate(LPCREATESTRUCT lpCreateStruct);

DECLARE_MESSAGE_MAP()

};

BEGIN_MESSAGE_MAP(CGestureWindow, CWnd)

ON_WM_CREATE()

ON_MESSAGE(WM_GESTURE, OnGesture)

END_MESSAGE_MAP()

int CGestureWindow::OnCreate(LPCREATESTRUCT lpCreateStruct)

{

....

CBCGPGestureConfig gestureConfig;

gestureConfig.EnablePan(TRUE,

BCGP_GC_PAN_WITH_SINGLE_FINGER_VERTICALLY | BCGP_GC_PAN_WITH_SINGLE_FINGER_HORIZONTALLY |

BCGP_GC_PAN_WITH_GUTTER | BCGP_GC_PAN_WITH_INERTIA);

bcgpGestureManager.SetGestureConfig(GetSafeHwnd(), gestureConfig);

return 0;

}

LRESULT CGestureWindow::OnGesture(WPARAM wp, LPARAM lp)

{

if (ProcessGestureEvent(this, wp, lp))

{

return Default();

}

return 0;

}

BOOL CGestureWindow::OnGestureEventPan(const CPoint& ptFrom, const CPoint& ptTo, CSize& sizeOverPan)

{

double dx = ptTo.x - ptFrom.x;

double dy = ptTo.y - ptFrom.y;

// Process horizontal/vertical window content shifting

....

return TRUE;

}