Method SetSimpleDialogClearDisplay

SetSimpleDialogClearDisplay(SelectBufClearOption)

Clears one of each display buffer or both display buffers in the simple dialog mode.

Declaration

Error SetSimpleDialogClearDisplay(SelectBufClearOption buffersToClear)

Parameters

Type	Name	Description
SelectBufClearOption	buffersToClear

Returns

Type	Description
Error	Error codes

Remarks

Rendering a cleared buffer will depict a black screen.

Examples

The following example writes a numbered image to the visible buffer and clears it 100 times.

C#

Error error = driver.SetSimpleDialogMode();
for (int k = 0; k < 100; k++)
{
   int height = 80;
   Bitmap bitmap = GetNumberedTile(k, height, height, new Pen(Brushes.Blue, 4f));
   error = driver.SetSimpleDialogResourceImage(bitmap, 0, 0, SelectBuf.CurrentBuffer);
   error = driver.SetSimpleDialogClearDisplay(SelectBufClearOption.CurrentBuffer);
}

Bitmap GetNumberedTile(int number, int width, int height, Pen boxPen)
{
    float emSize = 16.0f;
    Rectangle box = new Rectangle(0, 0, width, height);
    Bitmap bitmap = new Bitmap(box.Width, box.Height);
    using Graphics g = Graphics.FromImage(bitmap);
    g.Clear(Color.Transparent);
    g.DrawString($"{number}.", new Font(FontFamily.GenericSansSerif, emSize, FontStyle.Regular),
        Brushes.White, new PointF(width / 2 - emSize, height / 2 - emSize));
    g.DrawRectangle(boxPen, box);
    return bitmap;
}