public void DisplayError(string msg)
{
_bgLayer.reset();
_bgLayer.selectGrayPen(255);
_bgLayer.drawBar(0, 0, _w, _h);
_bgLayer.selectColorPen(0);
_bgLayer.drawText(_w / 2, _h / 3, YDisplayLayer.ALIGN.CENTER, "ERROR !");
_bgLayer.drawText(_w / 2, _h * 2 / 3, YDisplayLayer.ALIGN.CENTER, msg);
}
/**
* <summary>
* Selects the pen gray level for all subsequent drawing functions,
* including text drawing.
* <para>
* The gray level is provided as a number between
* 0 (black) and 255 (white, or whichever the lightest color is).
* For monochrome displays (without gray levels), any value
* lower than 128 is rendered as black, and any value equal
* or above to 128 is non-black.
* </para>
* </summary>
* <param name="graylevel">
* the desired gray level, from 0 to 255
* </param>
* <returns>
* <c>0</c> if the call succeeds.
* </returns>
* <para>
* On failure, throws an exception or returns a negative error code.
* </para>
*/
public virtual int selectGrayPen(int graylevel)
{
return(_objptr.selectGrayPen(graylevel));
}
