/// <summary>
/// Queries WM_POINTER device/screen rectangles
/// </summary>
/// <returns>
/// True if initialization succeeds, false otherwise.
/// </returns>
private bool TryInitializeDeviceRects()
{
bool success = false;
var deviceRect = new UnsafeNativeMethods.RECT();
var displayRect = new UnsafeNativeMethods.RECT();
success = UnsafeNativeMethods.GetPointerDeviceRects(_deviceInfo.device, ref deviceRect, ref displayRect);
if (success)
{
DeviceRect = deviceRect;
DisplayRect = displayRect;
// We use the max X and Y properties here as this is more readily useful for raw data
// which is where all conversions come from.
SizeInfo = new TabletDeviceSizeInfo(
new Size(SupportedPointerProperties[StylusPointDescription.RequiredXIndex].logicalMax,
SupportedPointerProperties[StylusPointDescription.RequiredYIndex].logicalMax),
new Size(displayRect.right - displayRect.left, displayRect.bottom - displayRect.top));
}
return(success);
}
public static void SetPadding(this RichTextBox textBox, int padding)
{
var rect = new UnsafeNativeMethods.RECT();
UnsafeNativeMethods.SendMessageRect(
textBox.Handle,
UnsafeNativeMethods.EM_GETRECT,
0,
ref rect);
var newRect = new UnsafeNativeMethods.RECT(
padding,
padding,
rect.Right - padding * 2,
rect.Bottom - padding * 2);
UnsafeNativeMethods.SendMessageRect(
textBox.Handle,
UnsafeNativeMethods.EM_SETRECT,
0,
ref newRect);
}
public void GetScreenExt(out UnsafeNativeMethods.RECT rect)
{
rect = new UnsafeNativeMethods.RECT();
}
public void GetTextExt(int start, int end, out UnsafeNativeMethods.RECT rect, out bool clipped)
{
rect = new UnsafeNativeMethods.RECT();
clipped = false;
}