private void UpdateThumb()
{
if (thumb != IntPtr.Zero)
{
PSIZE size;
DwmQueryThumbnailSourceSize(thumb, out size);
DWM_THUMBNAIL_PROPERTIES props = new DWM_THUMBNAIL_PROPERTIES();
props.fVisible = true;
props.dwFlags = DWM_TNP_VISIBLE | DWM_TNP_RECTDESTINATION | DWM_TNP_OPACITY;
props.opacity = (byte)opacity.Value;
props.rcDestination = new Rect(image.Left, image.Top, image.Right, image.Bottom);
if (size.x < image.Width)
{
props.rcDestination.Right = props.rcDestination.Left + size.x;
}
if (size.y < image.Height)
{
props.rcDestination.Bottom = props.rcDestination.Top + size.y;
}
DwmUpdateThumbnailProperties(thumb, ref props);
}
}
static extern int DwmUpdateThumbnailProperties(IntPtr hThumb, ref DWM_THUMBNAIL_PROPERTIES props);
private void UpdateThumb()
{
if (thumb != IntPtr.Zero)
{
PSIZE size;
DwmQueryThumbnailSourceSize(thumb, out size);
DWM_THUMBNAIL_PROPERTIES props = new DWM_THUMBNAIL_PROPERTIES();
props.fVisible = true;
props.dwFlags = DWM_TNP_VISIBLE | DWM_TNP_RECTDESTINATION | DWM_TNP_OPACITY;
props.opacity = (byte)opacity.Value;
props.rcDestination = new Rect(image.Left, image.Top, image.Right, image.Bottom);
if (size.x < image.Width)
props.rcDestination.Right = props.rcDestination.Left + size.x;
if (size.y < image.Height)
props.rcDestination.Bottom = props.rcDestination.Top + size.y;
DwmUpdateThumbnailProperties(thumb, ref props);
}
}
static extern int DwmUpdateThumbnailProperties(IntPtr hThumb, ref DWM_THUMBNAIL_PROPERTIES props);
private void UpdateThumb()
{
if (thumb != IntPtr.Zero)
{
PSIZE size;
DwmQueryThumbnailSourceSize(thumb, out size);
DWM_THUMBNAIL_PROPERTIES props = new DWM_THUMBNAIL_PROPERTIES();
props.fVisible = true;
props.dwFlags = DWM_TNP_VISIBLE | DWM_TNP_RECTDESTINATION;
if (cbRect.Checked) props.dwFlags |= DWM_TNP_RECTSOURCE;
props.rcSource = new Rect((int)txtX.Value, (int)txtY.Value, (int)txtW.Value, (int)txtH.Value);
props.rcDestination = new Rect(image.Left, image.Top, image.Right, image.Bottom);
if (size.x < image.Width)
props.rcDestination.Right = props.rcDestination.Left + size.x;
if (size.y < image.Height)
props.rcDestination.Bottom = props.rcDestination.Top + size.y;
DwmUpdateThumbnailProperties(thumb, ref props);
}
}
