我這邊先直接貼一些資料結構的定義:
#if(WINVER >= 0x0601)
/*
* Gesture defines and functions
*/
/*
* Gesture information handle
*/
DECLARE_HANDLE(HGESTUREINFO);
/*
* Gesture flags - GESTUREINFO.dwFlags
*/
#define GF_BEGIN 0x00000001
#define GF_INERTIA 0x00000002
#define GF_END 0x00000004
/*
* Gesture IDs
*/
#define GID_BEGIN 1
#define GID_END 2
#define GID_ZOOM 3
#define GID_PAN 4
#define GID_ROTATE 5
#define GID_TWOFINGERTAP 6
#define GID_PRESSANDTAP 7
#define GID_ROLLOVER GID_PRESSANDTAP
/*
* Gesture information structure
* - Pass the HGESTUREINFO received in the WM_GESTURE message lParam into the
* GetGestureInfo function to retrieve this information.
* - If cbExtraArgs is non-zero, pass the HGESTUREINFO received in the WM_GESTURE
* message lParam into the GetGestureExtraArgs function to retrieve extended
* argument information.
*/
typedef struct tagGESTUREINFO {
UINT cbSize; // size, in bytes, of this structure (including variable length Args field)
DWORD dwFlags; // see GF_* flags
DWORD dwID; // gesture ID, see GID_* defines
HWND hwndTarget; // handle to window targeted by this gesture
POINTS ptsLocation; // current location of this gesture
DWORD dwInstanceID; // internally used
DWORD dwSequenceID; // internally used
ULONGLONG ullArguments; // arguments for gestures whose arguments fit in 8 BYTES
UINT cbExtraArgs; // size, in bytes, of extra arguments, if any, that accompany this gesture
} GESTUREINFO, *PGESTUREINFO;
typedef GESTUREINFO const * PCGESTUREINFO;
/*
* Gesture notification structure
* - The WM_GESTURENOTIFY message lParam contains a pointer to this structure.
* - The WM_GESTURENOTIFY message notifies a window that gesture recognition is
* in progress and a gesture will be generated if one is recognized under the
* current gesture settings.
*/
typedef struct tagGESTURENOTIFYSTRUCT {
UINT cbSize; // size, in bytes, of this structure
DWORD dwFlags; // unused
HWND hwndTarget; // handle to window targeted by the gesture
POINTS ptsLocation; // starting location
DWORD dwInstanceID; // internally used
} GESTURENOTIFYSTRUCT, *PGESTURENOTIFYSTRUCT;
/*
* Gesture argument helpers
* - Angle should be a double in the range of -2pi to +2pi
* - Argument should be an unsigned 16-bit value
*/
#define GID_ROTATE_ANGLE_TO_ARGUMENT(_arg_) ((USHORT)((((_arg_) + 2.0 * 3.14159265) / (4.0 * 3.14159265)) * 65535.0))
#define GID_ROTATE_ANGLE_FROM_ARGUMENT(_arg_) ((((double)(_arg_) / 65535.0) * 4.0 * 3.14159265) - 2.0 * 3.14159265)
/*
* Gesture information retrieval
* - HGESTUREINFO is received by a window in the lParam of a WM_GESTURE message.
*/
WINUSERAPI
BOOL
WINAPI
GetGestureInfo(
__in HGESTUREINFO hGestureInfo,
__out PGESTUREINFO pGestureInfo);
/*
* Gesture extra arguments retrieval
* - HGESTUREINFO is received by a window in the lParam of a WM_GESTURE message.
* - Size, in bytes, of the extra argument data is available in the cbExtraArgs
* field of the GESTUREINFO structure retrieved using the GetGestureInfo function.
*/
WINUSERAPI
BOOL
WINAPI
GetGestureExtraArgs(
__in HGESTUREINFO hGestureInfo,
__in UINT cbExtraArgs,
__out_bcount(cbExtraArgs) PBYTE pExtraArgs);
/*
* Gesture information handle management
* - If an application processes the WM_GESTURE message, then once it is done
* with the associated HGESTUREINFO, the application is responsible for
* closing the handle using this function. Failure to do so may result in
* process memory leaks.
* - If the message is instead passed to DefWindowProc, or is forwarded using
* one of the PostMessage or SendMessage class of API functions, the handle
* is transfered with the message and need not be closed by the application.
*/
WINUSERAPI
BOOL
WINAPI
CloseGestureInfoHandle(
__in HGESTUREINFO hGestureInfo);
/*
* Gesture configuration structure
* - Used in SetGestureConfig and GetGestureConfig
* - Note that any setting not included in either GESTURECONFIG.dwWant or
* GESTURECONFIG.dwBlock will use the parent window's preferences or
* system defaults.
*/
typedef struct tagGESTURECONFIG {
DWORD dwID; // gesture ID
DWORD dwWant; // settings related to gesture ID that are to be turned on
DWORD dwBlock; // settings related to gesture ID that are to be turned off
} GESTURECONFIG, *PGESTURECONFIG;
/*
* Gesture configuration flags - GESTURECONFIG.dwWant or GESTURECONFIG.dwBlock
*/
/*
* Common gesture configuration flags - set GESTURECONFIG.dwID to zero
*/
#define GC_ALLGESTURES 0x00000001
/*
* Zoom gesture configuration flags - set GESTURECONFIG.dwID to GID_ZOOM
*/
#define GC_ZOOM 0x00000001
/*
* Pan gesture configuration flags - set GESTURECONFIG.dwID to GID_PAN
*/
#define GC_PAN 0x00000001
#define GC_PAN_WITH_SINGLE_FINGER_VERTICALLY 0x00000002
#define GC_PAN_WITH_SINGLE_FINGER_HORIZONTALLY 0x00000004
#define GC_PAN_WITH_GUTTER 0x00000008
#define GC_PAN_WITH_INERTIA 0x00000010
/*
* Rotate gesture configuration flags - set GESTURECONFIG.dwID to GID_ROTATE
*/
#define GC_ROTATE 0x00000001
/*
* Two finger tap gesture configuration flags - set GESTURECONFIG.dwID to GID_TWOFINGERTAP
*/
#define GC_TWOFINGERTAP 0x00000001
/*
* PressAndTap gesture configuration flags - set GESTURECONFIG.dwID to GID_PRESSANDTAP
*/
#define GC_PRESSANDTAP 0x00000001
#define GC_ROLLOVER GC_PRESSANDTAP
#define GESTURECONFIGMAXCOUNT 256 // Maximum number of gestures that can be included
// in a single call to SetGestureConfig / GetGestureConfig
WINUSERAPI
BOOL
WINAPI
SetGestureConfig(
__in HWND hwnd, // window for which configuration is specified
__in DWORD dwReserved, // reserved, must be 0
__in UINT cIDs, // count of GESTURECONFIG structures
__in_ecount(cIDs) PGESTURECONFIG pGestureConfig, // array of GESTURECONFIG structures, dwIDs will be processed in the
// order specified and repeated occurances will overwrite previous ones
__in UINT cbSize); // sizeof(GESTURECONFIG)
#define GCF_INCLUDE_ANCESTORS 0x00000001 // If specified, GetGestureConfig returns consolidated configuration
// for the specified window and it's parent window chain
WINUSERAPI
BOOL
WINAPI
GetGestureConfig(
__in HWND hwnd, // window for which configuration is required
__in DWORD dwReserved, // reserved, must be 0
__in DWORD dwFlags, // see GCF_* flags
__in PUINT pcIDs, // *pcIDs contains the size, in number of GESTURECONFIG structures,
// of the buffer pointed to by pGestureConfig
__inout_ecount(*pcIDs) PGESTURECONFIG pGestureConfig,
// pointer to buffer to receive the returned array of GESTURECONFIG structures
__in UINT cbSize); // sizeof(GESTURECONFIG)
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