Code:
/ Net / Net / 3.5.50727.3053 / DEVDIV / depot / DevDiv / releases / Orcas / SP / wpf / src / UIAutomation / Win32Providers / MS / Internal / AutomationProxies / Input.cs / 1 / Input.cs
//----------------------------------------------------------------------------
//
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
//
//
// Description: Provides mouse and keyboard input functionality
//
// History:
// 05/29/2003 : BrendanM ported to WCP
//
//---------------------------------------------------------------------------
using System.Windows.Input;
using System.Runtime.InteropServices;
using System.ComponentModel;
using MS.Win32;
using System;
namespace MS.Internal.AutomationProxies
{
// Flags for Input.SendMouseInput, indicate whether movent took place,
// or whether buttons were pressed or released.
[Flags]
internal enum SendMouseInputFlags
{
// Specifies that the pointer moved.
Move = 0x0001,
// Specifies that the left button was pressed.
LeftDown = 0x0002,
// Specifies that the left button was released.
LeftUp = 0x0004,
// Specifies that the right button was pressed.
RightDown = 0x0008,
// Specifies that the right button was released.
RightUp = 0x0010,
// Specifies that the middle button was pressed.
MiddleDown = 0x0020,
// Specifies that the middle button was released.
MiddleUp = 0x0040,
// Specifies that the x button was pressed.
XDown = 0x0080,
// Specifies that the x button was released.
XUp = 0x0100,
// Specifies that the wheel was moved
Wheel = 0x0800,
// Specifies that x, y are absolute, not relative
Absolute = 0x8000,
};
// Provides methods for sending mouse and keyboard input
internal sealed class Input
{
//-----------------------------------------------------
//
// Constructors
//
//-----------------------------------------------------
#region Constructors
// Static class - Private to prevent creation
Input()
{
}
#endregion Constructors
//------------------------------------------------------
//
// Internal Methods
//
//-----------------------------------------------------
#region Internal Methods
// Inject pointer input into the system
// x, y are in pixels. If Absolute flag used, are relative to desktop origin.
internal static void SendMouseInput( double x, double y, int data, SendMouseInputFlags flags )
{
int intflags = (int) flags;
if( ( intflags & (int)SendMouseInputFlags.Absolute ) != 0 )
{
int vscreenWidth = UnsafeNativeMethods.GetSystemMetrics(NativeMethods.SM_CXVIRTUALSCREEN);
int vscreenHeight = UnsafeNativeMethods.GetSystemMetrics(NativeMethods.SM_CYVIRTUALSCREEN);
int vscreenLeft = UnsafeNativeMethods.GetSystemMetrics(NativeMethods.SM_XVIRTUALSCREEN);
int vscreenTop = UnsafeNativeMethods.GetSystemMetrics( NativeMethods.SM_YVIRTUALSCREEN );
// Absolute input requires that input is in 'normalized' coords - with the entire
// desktop being (0,0)...(65535,65536). Need to convert input x,y coords to this
// first.
//
// In this normalized world, any pixel on the screen corresponds to a block of values
// of normalized coords - eg. on a 1024x768 screen,
// y pixel 0 corresponds to range 0 to 85.333,
// y pixel 1 corresponds to range 85.333 to 170.666,
// y pixel 2 correpsonds to range 170.666 to 256 - and so on.
// Doing basic scaling math - (x-top)*65536/Width - gets us the start of the range.
// However, because int math is used, this can end up being rounded into the wrong
// pixel. For example, if we wanted pixel 1, we'd get 85.333, but that comes out as
// 85 as an int, which falls into pixel 0's range - and that's where the pointer goes.
// To avoid this, we add on half-a-"screen pixel"'s worth of normalized coords - to
// push us into the middle of any given pixel's range - that's the 65536/(Width*2)
// part of the formula. So now pixel 1 maps to 85+42 = 127 - which is comfortably
// in the middle of that pixel's block.
// The key ting here is that unlike points in coordinate geometry, pixels take up
// space, so are often better treated like rectangles - and if you want to target
// a particular pixel, target its rectangle's midpoint, not its edge.
x = ( ( x - vscreenLeft ) * 65536 ) / vscreenWidth + 65536 / ( vscreenWidth * 2 );
y = ( ( y - vscreenTop ) * 65536 ) / vscreenHeight + 65536 / ( vscreenHeight * 2 );
intflags |= NativeMethods.MOUSEEVENTF_VIRTUALDESK;
}
NativeMethods.INPUT mi = new NativeMethods.INPUT();
mi.type = NativeMethods.INPUT_MOUSE;
mi.union.mouseInput.dx = (int) x;
mi.union.mouseInput.dy = (int)y;
mi.union.mouseInput.mouseData = data;
mi.union.mouseInput.dwFlags = intflags;
mi.union.mouseInput.time = 0;
mi.union.mouseInput.dwExtraInfo = new IntPtr( 0 );
if( UnsafeNativeMethods.SendInput( 1, ref mi, Marshal.SizeOf(mi) ) == 0 )
throw new Win32Exception(Marshal.GetLastWin32Error());
}
// Inject keyboard input into the system
internal static void SendKeyboardInput( Key key, bool press )
{
NativeMethods.INPUT ki = new NativeMethods.INPUT();
ki.type = NativeMethods.INPUT_KEYBOARD;
ki.union.keyboardInput.wVk = (short) KeyInterop.VirtualKeyFromKey( key );
ki.union.keyboardInput.wScan = (short)SafeNativeMethods.MapVirtualKey(ki.union.keyboardInput.wVk, 0);
int dwFlags = 0;
if( ki.union.keyboardInput.wScan > 0 )
dwFlags |= NativeMethods.KEYEVENTF_SCANCODE;
if( !press )
dwFlags |= NativeMethods.KEYEVENTF_KEYUP;
ki.union.keyboardInput.dwFlags = dwFlags;
if (IsExtendedKey(ki.union.keyboardInput.wVk))
{
ki.union.keyboardInput.dwFlags |= NativeMethods.KEYEVENTF_EXTENDEDKEY;
}
ki.union.keyboardInput.time = 0;
ki.union.keyboardInput.dwExtraInfo = new IntPtr( 0 );
if( UnsafeNativeMethods.SendInput( 1, ref ki, Marshal.SizeOf(ki) ) == 0 )
throw new Win32Exception(Marshal.GetLastWin32Error());
}
// Used internally by the HWND SetFocus code - it sends a hotkey to
// itself - because it uses a VK that's not on the keyboard, it needs
// to send the VK directly, not the scan code, which regular
// SendKeyboardInput does.
internal static void SendKeyboardInputVK(short vk, bool press)
{
NativeMethods.INPUT ki = new NativeMethods.INPUT();
ki.type = NativeMethods.INPUT_KEYBOARD;
ki.union.keyboardInput.wVk = vk;
ki.union.keyboardInput.wScan = 0;
ki.union.keyboardInput.dwFlags = press ? 0 : NativeMethods.KEYEVENTF_KEYUP;
if (IsExtendedKey(vk))
{
ki.union.keyboardInput.dwFlags |= NativeMethods.KEYEVENTF_EXTENDEDKEY;
}
ki.union.keyboardInput.time = 0;
ki.union.keyboardInput.dwExtraInfo = new IntPtr( 0 );
Misc.SendInput(1, ref ki, Marshal.SizeOf(ki));
}
#endregion Internal Methods
//------------------------------------------------------
//
// Private Methods
//
//------------------------------------------------------
#region Private Methods
private static bool IsExtendedKey(short vk)
{
// From the SDK:
// The extended-key flag indicates whether the keystroke message originated from one of
// the additional keys on the enhanced keyboard. The extended keys consist of the ALT and
// CTRL keys on the right-hand side of the keyboard; the INS, DEL, HOME, END, PAGE UP,
// PAGE DOWN, and arrow keys in the clusters to the left of the numeric keypad; the NUM LOCK
// key; the BREAK (CTRL+PAUSE) key; the PRINT SCRN key; and the divide (/) and ENTER keys in
// the numeric keypad. The extended-key flag is set if the key is an extended key.
//
// - docs appear to be incorrect. Use of Spy++ indicates that break is not an extended key.
// Also, menu key and windows keys also appear to be extended.
return vk == unchecked((short)UnsafeNativeMethods.VK_RMENU) ||
vk == unchecked((short)UnsafeNativeMethods.VK_RCONTROL) ||
vk == unchecked((short)UnsafeNativeMethods.VK_NUMLOCK) ||
vk == unchecked((short)UnsafeNativeMethods.VK_INSERT) ||
vk == unchecked((short)UnsafeNativeMethods.VK_DELETE) ||
vk == unchecked((short)UnsafeNativeMethods.VK_HOME) ||
vk == unchecked((short)UnsafeNativeMethods.VK_END) ||
vk == unchecked((short)UnsafeNativeMethods.VK_PRIOR) ||
vk == unchecked((short)UnsafeNativeMethods.VK_NEXT) ||
vk == unchecked((short)UnsafeNativeMethods.VK_UP) ||
vk == unchecked((short)UnsafeNativeMethods.VK_DOWN) ||
vk == unchecked((short)UnsafeNativeMethods.VK_LEFT) ||
vk == unchecked((short)UnsafeNativeMethods.VK_RIGHT) ||
vk == unchecked((short)UnsafeNativeMethods.VK_APPS) ||
vk == unchecked((short)UnsafeNativeMethods.VK_RWIN) ||
vk == unchecked((short)UnsafeNativeMethods.VK_LWIN);
// Note that there are no distinct values for the following keys:
// numpad divide
// numpad enter
}
#endregion Private Methods
//-----------------------------------------------------
//
// Private Fields
//
//------------------------------------------------------
#region Private Fields
// Stateless object, has no private fields
#endregion Private Fields
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
//----------------------------------------------------------------------------
//
//
// Copyright (C) Microsoft Corporation. All rights reserved.
//
//
//
// Description: Provides mouse and keyboard input functionality
//
// History:
// 05/29/2003 : BrendanM ported to WCP
//
//---------------------------------------------------------------------------
using System.Windows.Input;
using System.Runtime.InteropServices;
using System.ComponentModel;
using MS.Win32;
using System;
namespace MS.Internal.AutomationProxies
{
// Flags for Input.SendMouseInput, indicate whether movent took place,
// or whether buttons were pressed or released.
[Flags]
internal enum SendMouseInputFlags
{
// Specifies that the pointer moved.
Move = 0x0001,
// Specifies that the left button was pressed.
LeftDown = 0x0002,
// Specifies that the left button was released.
LeftUp = 0x0004,
// Specifies that the right button was pressed.
RightDown = 0x0008,
// Specifies that the right button was released.
RightUp = 0x0010,
// Specifies that the middle button was pressed.
MiddleDown = 0x0020,
// Specifies that the middle button was released.
MiddleUp = 0x0040,
// Specifies that the x button was pressed.
XDown = 0x0080,
// Specifies that the x button was released.
XUp = 0x0100,
// Specifies that the wheel was moved
Wheel = 0x0800,
// Specifies that x, y are absolute, not relative
Absolute = 0x8000,
};
// Provides methods for sending mouse and keyboard input
internal sealed class Input
{
//-----------------------------------------------------
//
// Constructors
//
//-----------------------------------------------------
#region Constructors
// Static class - Private to prevent creation
Input()
{
}
#endregion Constructors
//------------------------------------------------------
//
// Internal Methods
//
//-----------------------------------------------------
#region Internal Methods
// Inject pointer input into the system
// x, y are in pixels. If Absolute flag used, are relative to desktop origin.
internal static void SendMouseInput( double x, double y, int data, SendMouseInputFlags flags )
{
int intflags = (int) flags;
if( ( intflags & (int)SendMouseInputFlags.Absolute ) != 0 )
{
int vscreenWidth = UnsafeNativeMethods.GetSystemMetrics(NativeMethods.SM_CXVIRTUALSCREEN);
int vscreenHeight = UnsafeNativeMethods.GetSystemMetrics(NativeMethods.SM_CYVIRTUALSCREEN);
int vscreenLeft = UnsafeNativeMethods.GetSystemMetrics(NativeMethods.SM_XVIRTUALSCREEN);
int vscreenTop = UnsafeNativeMethods.GetSystemMetrics( NativeMethods.SM_YVIRTUALSCREEN );
// Absolute input requires that input is in 'normalized' coords - with the entire
// desktop being (0,0)...(65535,65536). Need to convert input x,y coords to this
// first.
//
// In this normalized world, any pixel on the screen corresponds to a block of values
// of normalized coords - eg. on a 1024x768 screen,
// y pixel 0 corresponds to range 0 to 85.333,
// y pixel 1 corresponds to range 85.333 to 170.666,
// y pixel 2 correpsonds to range 170.666 to 256 - and so on.
// Doing basic scaling math - (x-top)*65536/Width - gets us the start of the range.
// However, because int math is used, this can end up being rounded into the wrong
// pixel. For example, if we wanted pixel 1, we'd get 85.333, but that comes out as
// 85 as an int, which falls into pixel 0's range - and that's where the pointer goes.
// To avoid this, we add on half-a-"screen pixel"'s worth of normalized coords - to
// push us into the middle of any given pixel's range - that's the 65536/(Width*2)
// part of the formula. So now pixel 1 maps to 85+42 = 127 - which is comfortably
// in the middle of that pixel's block.
// The key ting here is that unlike points in coordinate geometry, pixels take up
// space, so are often better treated like rectangles - and if you want to target
// a particular pixel, target its rectangle's midpoint, not its edge.
x = ( ( x - vscreenLeft ) * 65536 ) / vscreenWidth + 65536 / ( vscreenWidth * 2 );
y = ( ( y - vscreenTop ) * 65536 ) / vscreenHeight + 65536 / ( vscreenHeight * 2 );
intflags |= NativeMethods.MOUSEEVENTF_VIRTUALDESK;
}
NativeMethods.INPUT mi = new NativeMethods.INPUT();
mi.type = NativeMethods.INPUT_MOUSE;
mi.union.mouseInput.dx = (int) x;
mi.union.mouseInput.dy = (int)y;
mi.union.mouseInput.mouseData = data;
mi.union.mouseInput.dwFlags = intflags;
mi.union.mouseInput.time = 0;
mi.union.mouseInput.dwExtraInfo = new IntPtr( 0 );
if( UnsafeNativeMethods.SendInput( 1, ref mi, Marshal.SizeOf(mi) ) == 0 )
throw new Win32Exception(Marshal.GetLastWin32Error());
}
// Inject keyboard input into the system
internal static void SendKeyboardInput( Key key, bool press )
{
NativeMethods.INPUT ki = new NativeMethods.INPUT();
ki.type = NativeMethods.INPUT_KEYBOARD;
ki.union.keyboardInput.wVk = (short) KeyInterop.VirtualKeyFromKey( key );
ki.union.keyboardInput.wScan = (short)SafeNativeMethods.MapVirtualKey(ki.union.keyboardInput.wVk, 0);
int dwFlags = 0;
if( ki.union.keyboardInput.wScan > 0 )
dwFlags |= NativeMethods.KEYEVENTF_SCANCODE;
if( !press )
dwFlags |= NativeMethods.KEYEVENTF_KEYUP;
ki.union.keyboardInput.dwFlags = dwFlags;
if (IsExtendedKey(ki.union.keyboardInput.wVk))
{
ki.union.keyboardInput.dwFlags |= NativeMethods.KEYEVENTF_EXTENDEDKEY;
}
ki.union.keyboardInput.time = 0;
ki.union.keyboardInput.dwExtraInfo = new IntPtr( 0 );
if( UnsafeNativeMethods.SendInput( 1, ref ki, Marshal.SizeOf(ki) ) == 0 )
throw new Win32Exception(Marshal.GetLastWin32Error());
}
// Used internally by the HWND SetFocus code - it sends a hotkey to
// itself - because it uses a VK that's not on the keyboard, it needs
// to send the VK directly, not the scan code, which regular
// SendKeyboardInput does.
internal static void SendKeyboardInputVK(short vk, bool press)
{
NativeMethods.INPUT ki = new NativeMethods.INPUT();
ki.type = NativeMethods.INPUT_KEYBOARD;
ki.union.keyboardInput.wVk = vk;
ki.union.keyboardInput.wScan = 0;
ki.union.keyboardInput.dwFlags = press ? 0 : NativeMethods.KEYEVENTF_KEYUP;
if (IsExtendedKey(vk))
{
ki.union.keyboardInput.dwFlags |= NativeMethods.KEYEVENTF_EXTENDEDKEY;
}
ki.union.keyboardInput.time = 0;
ki.union.keyboardInput.dwExtraInfo = new IntPtr( 0 );
Misc.SendInput(1, ref ki, Marshal.SizeOf(ki));
}
#endregion Internal Methods
//------------------------------------------------------
//
// Private Methods
//
//------------------------------------------------------
#region Private Methods
private static bool IsExtendedKey(short vk)
{
// From the SDK:
// The extended-key flag indicates whether the keystroke message originated from one of
// the additional keys on the enhanced keyboard. The extended keys consist of the ALT and
// CTRL keys on the right-hand side of the keyboard; the INS, DEL, HOME, END, PAGE UP,
// PAGE DOWN, and arrow keys in the clusters to the left of the numeric keypad; the NUM LOCK
// key; the BREAK (CTRL+PAUSE) key; the PRINT SCRN key; and the divide (/) and ENTER keys in
// the numeric keypad. The extended-key flag is set if the key is an extended key.
//
// - docs appear to be incorrect. Use of Spy++ indicates that break is not an extended key.
// Also, menu key and windows keys also appear to be extended.
return vk == unchecked((short)UnsafeNativeMethods.VK_RMENU) ||
vk == unchecked((short)UnsafeNativeMethods.VK_RCONTROL) ||
vk == unchecked((short)UnsafeNativeMethods.VK_NUMLOCK) ||
vk == unchecked((short)UnsafeNativeMethods.VK_INSERT) ||
vk == unchecked((short)UnsafeNativeMethods.VK_DELETE) ||
vk == unchecked((short)UnsafeNativeMethods.VK_HOME) ||
vk == unchecked((short)UnsafeNativeMethods.VK_END) ||
vk == unchecked((short)UnsafeNativeMethods.VK_PRIOR) ||
vk == unchecked((short)UnsafeNativeMethods.VK_NEXT) ||
vk == unchecked((short)UnsafeNativeMethods.VK_UP) ||
vk == unchecked((short)UnsafeNativeMethods.VK_DOWN) ||
vk == unchecked((short)UnsafeNativeMethods.VK_LEFT) ||
vk == unchecked((short)UnsafeNativeMethods.VK_RIGHT) ||
vk == unchecked((short)UnsafeNativeMethods.VK_APPS) ||
vk == unchecked((short)UnsafeNativeMethods.VK_RWIN) ||
vk == unchecked((short)UnsafeNativeMethods.VK_LWIN);
// Note that there are no distinct values for the following keys:
// numpad divide
// numpad enter
}
#endregion Private Methods
//-----------------------------------------------------
//
// Private Fields
//
//------------------------------------------------------
#region Private Fields
// Stateless object, has no private fields
#endregion Private Fields
}
}
// File provided for Reference Use Only by Microsoft Corporation (c) 2007.
// Copyright (c) Microsoft Corporation. All rights reserved.
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