我正在尝试禁用可能影响我的winforms项目中的WebBrowser控件的大多数触摸手势，到目前为止我还没有成功。
使用PKEY_EdgeGesture_DisableTouchWhenFullScreen =＆gt;禁用边缘手势工作
我正在使用PreFilterMessage，但似乎无法从那里过滤WM_GESTURE：
public bool PreFilterMessage(ref Message m)
{
// Messages to be filtered
const int WM_MOUSEWHEEL = 0x20A;
const int WM_SYSCOMMAND = 0x0112;
const int WM_GESTURE = 0x0119;
const int WM_GESTURENOTIFY = 0x011A;
const int SC_MOVE = 0xF010;
switch (m.Msg)
{
case WM_MOUSEWHEEL:
Debug.WriteLine("Filtering WM_MOUSEWHEEL !"); // Working
return true;
case WM_GESTURE:
Debug.WriteLine("Filtering WM_GESTURE !"); // Not working
return true;
case WM_GESTURENOTIFY:
Debug.WriteLine("Filtering WM_GESTURENOTIFY !"); // Not working
return true;
case WM_SYSCOMMAND:
int command = m.WParam.ToInt32() & 0xfff0;
if (command == SC_MOVE) return true;
break;
}
接下来我已经转移到WndProc覆盖，我在调试日志中看到了消息，但到目前为止我还没有弄清楚如何从那里过滤消息：无论如何，手势都已执行。
protected override void WndProc(ref Message m)
{
const int WM_GESTURE = 0x0119;
const int WM_GESTURENOTIFY = 0x011A;
switch (m.Msg)
{
case WM_GESTURE:
Debug.WriteLine("WM_GESTURE go away !!!");
return;
case WM_GESTURENOTIFY:
Debug.WriteLine("WM_GESTURENOTIFY begone with thee !!");
return;
}
base.WndProc(ref m);
}
我试图避免在html页面中注入CSS或设置注册表值以全局禁用放大Internet Explorer，任何人都有想法？
答案 0 :(得分：3)
回答我自己的问题：）
过滤WM_GESUTURE和WM_TOUCH消息导致无处可去（从未注意到应用触控行为发生变化）
WM_POINTER是要走的路...编辑WM_POINTERUP和WM_POINTERDOWN消息会对我的应用程序产生影响。
使用WM_POINTER消息可以提供低级数据，你必须建立自己的手势解释（如果你的目标只是禁用这些，这看起来很痛苦）
解决方法：由于WM_POINTER包含有关主要，辅助，三元指针的信息，因此我会过滤掉与主指针无关的所有消息，从而禁用两根手指
public partial class Form1 : Form, IMessageFilter
{
internal static int HIWORD(IntPtr wParam)
{
return (int)((wParam.ToInt64() >> 16) & 0xffff);
}
internal static int LOWORD(IntPtr wParam)
{
return (int)(wParam.ToInt64() & 0xffff);
}
[Flags]
internal enum VIRTUAL_KEY_STATES
{
NONE = 0x0000,
LBUTTON = 0x0001,
RBUTTON = 0x0002,
SHIFT = 0x0004,
CTRL = 0x0008,
MBUTTON = 0x0010,
XBUTTON1 = 0x0020,
XBUTTON2 = 0x0040
}
[StructLayout(LayoutKind.Sequential)]
internal struct POINT
{
public int X;
public int Y;
public POINT(int x, int y)
{
X = x;
Y = y;
}
public POINT(Point pt)
{
X = pt.X;
Y = pt.Y;
}
public Point ToPoint()
{
return new Point(X, Y);
}
public void AssignTo(ref Point destination)
{
destination.X = X;
destination.Y = Y;
}
public void CopyFrom(Point source)
{
X = source.X;
Y = source.Y;
}
public void CopyFrom(POINT source)
{
X = source.X;
Y = source.Y;
}
}
[StructLayout(LayoutKind.Sequential)]
internal struct RECT
{
public int Left;
public int Top;
public int Right;
public int Bottom;
public RECT(Rectangle source)
{
Left = source.Left;
Top = source.Top;
Right = source.Right;
Bottom = source.Bottom;
}
public RECT(int x, int y, int width, int height)
{
Left = x;
Top = y;
Right = Left + width;
Bottom = Top + height;
}
public int Width
{
get { return Right - Left; }
}
public int Height
{
get { return Bottom - Top; }
}
public Rectangle ToRectangle()
{
return new Rectangle(Left, Top, Width, Height);
}
public void Inflate(int dx, int dy)
{
Left -= dx;
Top -= dy;
Right += dx;
Bottom += dy;
}
public void Deflate(int leftMargin, int topMargin, int rightMargin, int bottomMargin)
{
Left += leftMargin;
Top += topMargin;
Right -= rightMargin;
Bottom -= bottomMargin;
if (Bottom < Top)
{
Bottom = Top;
}
if (Right < Left)
{
Right = Left;
}
}
public void Offset(int dx, int dy)
{
Left += dx;
Top += dy;
Right += dx;
Bottom += dy;
}
}
[Flags]
internal enum TOUCH_FLAGS
{
NONE = 0x00000000
}
[Flags]
internal enum TOUCH_MASK
{
NONE = 0x00000000,
CONTACTAREA = 0x00000001,
ORIENTATION = 0x00000002,
PRESSURE = 0x00000004,
}
internal enum POINTER_INPUT_TYPE
{
POINTER = 0x00000001,
TOUCH = 0x00000002,
PEN = 0x00000003,
MOUSE = 0x00000004
}
[Flags]
internal enum POINTER_FLAGS
{
NONE = 0x00000000,
NEW = 0x00000001,
INRANGE = 0x00000002,
INCONTACT = 0x00000004,
FIRSTBUTTON = 0x00000010,
SECONDBUTTON = 0x00000020,
THIRDBUTTON = 0x00000040,
FOURTHBUTTON = 0x00000080,
FIFTHBUTTON = 0x00000100,
PRIMARY = 0x00002000,
CONFIDENCE = 0x00004000,
CANCELED = 0x00008000,
DOWN = 0x00010000,
UPDATE = 0x00020000,
UP = 0x00040000,
WHEEL = 0x00080000,
HWHEEL = 0x00100000,
CAPTURECHANGED = 0x00200000,
}
[StructLayout(LayoutKind.Sequential)]
internal struct POINTER_TOUCH_INFO
{
[MarshalAs(UnmanagedType.Struct)]
public POINTER_INFO PointerInfo;
public TOUCH_FLAGS TouchFlags;
public TOUCH_MASK TouchMask;
[MarshalAs(UnmanagedType.Struct)]
public RECT ContactArea;
[MarshalAs(UnmanagedType.Struct)]
public RECT ContactAreaRaw;
public uint Orientation;
public uint Pressure;
}
[StructLayout(LayoutKind.Sequential)]
internal struct POINTER_INFO
{
public POINTER_INPUT_TYPE pointerType;
public int PointerID;
public int FrameID;
public POINTER_FLAGS PointerFlags;
public IntPtr SourceDevice;
public IntPtr WindowTarget;
[MarshalAs(UnmanagedType.Struct)]
public POINT PtPixelLocation;
[MarshalAs(UnmanagedType.Struct)]
public POINT PtPixelLocationRaw;
[MarshalAs(UnmanagedType.Struct)]
public POINT PtHimetricLocation;
[MarshalAs(UnmanagedType.Struct)]
public POINT PtHimetricLocationRaw;
public uint Time;
public uint HistoryCount;
public uint InputData;
public VIRTUAL_KEY_STATES KeyStates;
public long PerformanceCount;
public int ButtonChangeType;
}
internal const int
WM_PARENTNOTIFY = 0x0210,
WM_NCPOINTERUPDATE = 0x0241,
WM_NCPOINTERDOWN = 0x0242,
WM_NCPOINTERUP = 0x0243,
WM_POINTERUPDATE = 0x0245,
WM_POINTERDOWN = 0x0246,
WM_POINTERUP = 0x0247,
WM_POINTERENTER = 0x0249,
WM_POINTERLEAVE = 0x024A,
WM_POINTERACTIVATE = 0x024B,
WM_POINTERCAPTURECHANGED = 0x024C,
WM_POINTERWHEEL = 0x024E,
WM_POINTERHWHEEL = 0x024F,
// WM_POINTERACTIVATE return codes
PA_ACTIVATE = 1,
PA_NOACTIVATE = 3,
MAX_TOUCH_COUNT = 256;
internal static int GET_POINTER_ID(IntPtr wParam)
{
return LOWORD(wParam);
}
[DllImport("user32.dll", SetLastError = true)]
internal static extern bool GetPointerInfo(int pointerID, ref POINTER_INFO pointerInfo);
public bool PreFilterMessage(ref Message m)
{
switch (m.Msg)
{
case WM_POINTERDOWN:
case WM_POINTERUP:
case WM_POINTERUPDATE:
case WM_POINTERCAPTURECHANGED:
int pointerID = GET_POINTER_ID(m.WParam);
POINTER_INFO pi = new POINTER_INFO();
if (GetPointerInfo(pointerID, ref pi))
{
// Not a primary pointer => filter !
if ((pi.PointerFlags & POINTER_FLAGS.PRIMARY) == 0)
{
return true;
}
}
break;
}
return false;
}