PRB: mouse_event and Absolute Moves on Secondary Monitors

RESOLUTION

Sample Code

// Visual C++ 5.0 does not define these constants. Visual C++ 6.0 does,
// so you need to allow for both possibilities.
#ifndef SPI_GETMOUSESPEED
#define SPI_GETMOUSESPEED   112
#endif

#ifndef SPI_SETMOUSESPEED
#define   SPI_SETMOUSESPEED   113
#endif

   int oldAccel[3], newAccel[3], oldSpeed, newSpeed, x, y;
   BOOL bResult;

   // The following values set mouse ballistics to 1 mickey/pixel.
   newAccel[0] = 0;
   newAccel[1] = 0;
   newAccel[2] = 0;
   newSpeed = 1;

   // Save the Current Mouse Acceleration Constants
   bResult = SystemParametersInfo(SPI_GETMOUSE,0, oldAccel,0);
   bResult = SystemParametersInfo(SPI_GETMOUSESPEED, 0, &oldSpeed,0);

   // Set the new Mouse Acceleration Constants (Disabled).
   bResult = SystemParametersInfo(SPI_SETMOUSE, 0, newAccel, 
                                  SPIF_SENDCHANGE);
   bResult = SystemParametersInfo(SPI_SETMOUSESPEED, 0, newSpeed, 
                                  SPIF_SENDCHANGE);

   //Pick some arbitrary x & y values.
   x = -100;
   y = -150;

   // Move cursor to UL of primary monitor (origin).
   mouse_event(MOUSEEVENTF_ABSOLUTE,0,0,0,0);

   // Move the cursor to the desired coordinates.
   mouse_event(0,x,y,0,0);

   // Restore the old Mouse Acceleration Constants.
   bResult = SystemParametersInfo(SPI_SETMOUSE,0, oldAccel, 
                                  SPIF_SENDCHANGE);
   bResult = SystemParametersInfo(SPI_SETMOUSESPEED, 0, oldSpeed, 
                                  SPIF_SENDCHANGE);