SetGestureConfig function

Configures the messages that are sent from a window for Windows Touch gestures.

Syntax

BOOL WINAPI SetGestureConfig(
  _In_  HWND hwnd,
  _In_  DWORD dwReserved,
  _In_  UINT cIDs,
  _In_  PGESTURECONFIG pGestureConfig,
  _In_  UINT cbSize
);

Parameters

hwnd [in]A handle to the window to set the gesture configuration on.
dwReserved [in]This value is reserved and must be set to 0.
cIDs [in]A count of the gesture configuration structures that are being passed.
pGestureConfig [in]An array of gesture configuration structures that specify the gesture configuration.
cbSize [in]The size of the gesture configuration (GESTURECONFIG) structure.

Return value

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, use the GetLastError function.

Remarks

If you don't expect to change the gesture configuration, call SetGestureConfig at window creation time. If you want to dynamically change the gesture configuration, call SetGestureConfig in response to WM_GESTURENOTIFY messages.
The following table shows the identifiers for gestures that are supported by the dwID member of the GESTURECONFIG structure. Note that setting dwID to 0 indicates that global gesture configuration flags are set.

Name	Value	Description
GID_ZOOM	3	Configuration settings for the zoom gesture.
GID_PAN	4	The pan gesture.
GID_ROTATE	5	The rotation gesture.
GID_TWOFINGERTAP	6	The two-finger tap gesture.
GID_PRESSANDTAP	7	The press and tap gesture.

The following flags are used when dwID is set to zero.

Name	Value	Description
GC_ALLGESTURES	0x00000001	All of the gestures.

The following flags are used when dwID is set to GID_ZOOM.

Name	Value	Description
GC_ZOOM	0x00000001	The zoom gesture.

The following flags are used when dwID is set to GID_PAN.

Name	Value	Description
GC_PAN	0x00000001	All pan gestures.
GC_PAN_WITH_SINGLE_FINGER_VERTICALLY	0x00000002	Vertical pans with one finger.
GC_PAN_WITH_SINGLE_FINGER_HORIZONTALLY	0x00000004	Horizontal pans with one finger.
GC_PAN_WITH_GUTTER	0x00000008	Panning with a gutter boundary around the edges of pannable region. The gutter boundary limits perpendicular movement to a primary direction until a threshold is reached to break out of the gutter.
GC_PAN_WITH_INTERTIA	0x00000010	Panning with inertia to smoothly slow when pan gestures stop.

Note Pan gestures can be used in conjunction with each other to control behavior. For example, setting the dwWant bits to panning with single-finger horizontal and setting the dwBlock bits to single-finger vertical will restrict panning to horizontal pans. Changing the dwWant bit to have

GC_PAN_WITH_SINGLE_FINGER_VERTICALLY | GC_PAN_WITH_SINGLE_FINGER_HORIZONTALLY

and removing single-finger vertical pan from the dwBlock bit will enable both vertical and horizontal panning. Note By default, panning has inertia enabled. Note A single call to SetGestureConfig cannot include other GIDs along with 0. The following flags are used when dwID is set to GID_ROTATE.

Name	Value	Description
GC_ROTATE	0x00000001	The rotation gesture.

The following flags are used when dwID is set to GID_TWOFINGERTAP.

Name	Value	Description
GC_TWOFINGERTAP	0x00000001	The two-finger tap gesture.

The following flags are used when dwID is set to GID_PRESSANDTAP.

Name	Value	Description
GC_PRESSANDTAP	0x00000001	The press and tap gesture.

Note Calling SetGestureConfig will change the gesture configuration for the lifetime of the Window, not just for the next gesture.

Examples

The following example shows how you could receive horizontal and vertical single-finger panning with no gutter and no inertia. This is a typical configuration for a 2-D navigation application such as the Microsoft PixelSense Globe application.

// set up our want / block settings
DWORD dwPanWant  = GC_PAN_WITH_SINGLE_FINGER_VERTICALLY | GC_PAN_WITH_SINGLE_FINGER_HORIZONTALLY;
DWORD dwPanBlock = GC_PAN_WITH_GUTTER | GC_PAN_WITH_INERTIA;

// set the settings in the gesture configuration
GESTURECONFIG gc[] = {{ GID_ZOOM, GC_ZOOM, 0 },
                      { GID_ROTATE, GC_ROTATE, 0},
                      { GID_PAN, dwPanWant , dwPanBlock}                     
                     };    
                     
UINT uiGcs = 3;
BOOL bResult = SetGestureConfig(hWnd, 0, uiGcs, gc, sizeof(GESTURECONFIG));  

if (!bResult){                
    DWORD err = GetLastError();                                       
}

The following example shows how to receive single-finger pan gestures and disable gutter panning. This is a typical configuration for applications that scroll text such as Notepad.
Note You should explicitly set all the flags that you want enabled or disabled when controlling single-finger panning.

// set up our want / block settings
DWORD dwPanWant  = GC_PAN | GC_PAN_WITH_SINGLE_FINGER_VERTICALLY;                    
DWORD dwPanBlock = GC_PAN_WITH_GUTTER;    

// set the settings in the gesture configuration
GESTURECONFIG gc[] = {{ GID_ZOOM, GC_ZOOM, 0 },
                      { GID_ROTATE, GC_ROTATE, 0},
                      { GID_PAN, dwPanWant , dwPanBlock}                     
                     };    
                     
UINT uiGcs = 3;
BOOL bResult = SetGestureConfig(hWnd, 0, uiGcs, gc, sizeof(GESTURECONFIG));  

if (!bResult){                
    DWORD err = GetLastError();                                       
}

The following example shows how you can disable all gestures.

// set the settings in the gesture configuration
GESTURECONFIG gc[] = {0,0,GC_ALLGESTURES};
                     
UINT uiGcs = 1;
BOOL bResult = SetGestureConfig(hWnd, 0, uiGcs, gc, sizeof(GESTURECONFIG));  

if (!bResult){                
    DWORD err = GetLastError();                                       
}

The following example shows how you could enable all gestures.

GESTURECONFIG gc = {0,GC_ALLGESTURES,0};

UINT uiGcs = 1;

BOOL bResult = SetGestureConfig(hWnd, 0, uiGcs, &gc, sizeof(GESTURECONFIG));  

if (!bResult){                
    DWORD err = GetLastError();                                       
}

The following example shows how you could enable all Windows 7 gestures.

// set the settings in the gesture configuration
GESTURECONFIG gc[] = {{ GID_ZOOM, GC_ZOOM, 0 },
                      { GID_ROTATE, GC_ROTATE, 0},
                      { GID_PAN, GC_PAN , 0},
                      { GID_TWOFINGERTAP, GC_TWOFINGERTAP , 0},
                      { GID_PRESSANDTAP, GC_PRESSANDTAP , 0}
                     };    
                     
UINT uiGcs = 5;
BOOL bResult = SetGestureConfig(hWnd, 0, uiGcs, gc, sizeof(GESTURECONFIG));  

if (!bResult){                
    DWORD err = GetLastError();                                       
}

The following example configuration would set the parent window to enable support for zoom, horizontal pan, and vertical pan while the child window would just support horizontal pan.

// set up our want / block settings for a parent window
DWORD dwPanWant  = GC_PAN_WITH_SINGLE_FINGER_VERTICALLY | GC_PAN_WITH_SINGLE_FINGER_HORIZONTALLY;
DWORD dwPanBlock = GC_PAN_WITH_GUTTER | GC_PAN_WITH_INERTIA;

// set the settings in the gesture configuration
GESTURECONFIG gcParent[] = {{ GID_ZOOM, GC_ZOOM, 0 },
                            { GID_PAN, dwPanWant , dwPanBlock}                         
                           };    

// Set the pan settings for a child window
dwPanWant  = GC_PAN_WITH_SINGLE_FINGER_HORIZONTALLY;
dwPanBlock = GC_PAN_WITH_SINGLE_FINGER_VERTICALLY | GC_PAN_WITH_GUTTER | GC_PAN_WITH_INERTIA;
                     
GESTURECONFIG gcChild[]  = {{ GID_ZOOM, 0, GC_ZOOM },
                            { GID_PAN, dwPanWant , dwPanBlock}                         
                           };    

UINT uiGcs   = 2;
BOOL bResult = FALSE;
                     
if (isParent){      
  bResult = SetGestureConfig(hWnd, 0, uiGcs, gcParent, sizeof(GESTURECONFIG));  
}else{
  bResult = SetGestureConfig(hWnd, 0, uiGcs, gcChild, sizeof(GESTURECONFIG));  
}

if (!bResult){                
    DWORD err = GetLastError();                                       
}

Requirements

Minimum supported client	Windows 7 [desktop apps only]
Minimum supported server	Windows Server 2008 R2 [desktop apps only]
Header	Winuser.h (include Windows.h)
Library	User32.lib
DLL	User32.dll