private static void NormalizeCoordinates(ref int x, ref int y)
{
int vScreenWidth = MySendKeys.GetSystemMetrics(MySendKeys.SMCxvirtualscreen);
int vScreenHeight = MySendKeys.GetSystemMetrics(MySendKeys.SMCyvirtualscreen);
int vScreenLeft = MySendKeys.GetSystemMetrics(MySendKeys.SMXvirtualscreen);
int vScreenTop = MySendKeys.GetSystemMetrics(MySendKeys.SMYvirtualscreen);
// Absolute input requires that input is in 'normalized' coords - with the entire
// desktop being (0,0)...(65536,65536). 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);
}
private static void SendMouseInput(int x, int y, int data, MySendKeys.SendMouseInputFlags flags)
{
PermissionSet permissions = new PermissionSet(PermissionState.Unrestricted);
permissions.Demand();
int intflags = (int)flags;
if ((intflags & (int)MySendKeys.SendMouseInputFlags.Absolute) != 0)
{
// Absolute position requires normalized coordinates.
NormalizeCoordinates(ref x, ref y);
intflags |= MySendKeys.MouseeventfVirtualdesk;
}
MySendKeys.INPUT mi = new MySendKeys.INPUT();
mi.type = MySendKeys.InputMouse;
mi.union.mouseInput.dx = x;
mi.union.mouseInput.dy = y;
mi.union.mouseInput.mouseData = data;
mi.union.mouseInput.dwFlags = intflags;
mi.union.mouseInput.time = 0;
mi.union.mouseInput.dwExtraInfo = new IntPtr(0);
if (MySendKeys.SendInput(1, ref mi, Marshal.SizeOf(mi)) == 0)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
}
public static bool GetCapsLockStatus()
{
//if ((MySendKeys.GetKeyState(0x20) & 0x8000)!=0) return true;
bool CapsLock = (((ushort)MySendKeys.GetKeyState(0x14)) & 0xffff) != 0;
return(CapsLock);
}
private static void SendKeyboardInput(Key key, bool press)
{
PermissionSet permissions = new PermissionSet(PermissionState.Unrestricted);
permissions.Demand();
MySendKeys.INPUT ki = new MySendKeys.INPUT();
ki.type = MySendKeys.InputKeyboard;
ki.union.keyboardInput.wVk = (short)KeyInterop.VirtualKeyFromKey(key);
ki.union.keyboardInput.wScan = (short)MySendKeys.MapVirtualKey(ki.union.keyboardInput.wVk, 0);
int dwFlags = 0;
if (ki.union.keyboardInput.wScan > 0)
{
dwFlags |= MySendKeys.KeyeventfScancode;
}
if (!press)
{
dwFlags |= MySendKeys.KeyeventfKeyup;
}
ki.union.keyboardInput.dwFlags = dwFlags;
if (ExtendedKeys.Contains(key))
{
ki.union.keyboardInput.dwFlags |= MySendKeys.KeyeventfExtendedkey;
}
ki.union.keyboardInput.time = 0;
ki.union.keyboardInput.dwExtraInfo = new IntPtr(0);
if (MySendKeys.SendInput(1, ref ki, Marshal.SizeOf(ki)) == 0)
{
throw new Win32Exception(Marshal.GetLastWin32Error());
}
}
/// <summary>
/// Types the specified text.
/// </summary>
/// <param name="text">The text to type.</param>
public static void Type(string text)
{
foreach (char c in text)
{
// We get the vKey value for the character via a Win32 API. We then use bit masks to pull the
// upper and lower bytes to get the shift state and key information. We then use WPF KeyInterop
// to go from the vKey key info into a System.Windows.Input.Key data structure. This work is
// necessary because Key doesn't distinguish between upper and lower case, so we have to wrap
// the key type inside a shift press/release if necessary.
int vKeyValue = MySendKeys.VkKeyScan(c);
bool keyIsShifted = (vKeyValue & MySendKeys.VKeyShiftMask) == MySendKeys.VKeyShiftMask;
Key key = KeyInterop.KeyFromVirtualKey(vKeyValue & MySendKeys.VKeyCharMask);
if (keyIsShifted)
{
Type(key, new Key[] { Key.LeftShift });
}
else
{
Type(key);
}
}
}
