private int Print(RichTextBox box, int charFrom, int charTo, PrintPageEventArgs e)
{
RichTextBoxPrint.RECT rc;
rc.Top = (int)((double)e.MarginBounds.Top * 14.4);
rc.Bottom = (int)((double)e.MarginBounds.Bottom * 14.4);
rc.Left = (int)((double)e.MarginBounds.Left * 14.4);
rc.Right = (int)((double)e.MarginBounds.Right * 14.4);
RichTextBoxPrint.RECT rcPage;
rcPage.Top = (int)((double)e.PageBounds.Top * 14.4);
rcPage.Bottom = (int)((double)e.PageBounds.Bottom * 14.4);
rcPage.Left = (int)((double)e.PageBounds.Left * 14.4);
rcPage.Right = (int)((double)e.PageBounds.Right * 14.4);
IntPtr hdc = e.Graphics.GetHdc();
RichTextBoxPrint.FORMATRANGE fORMATRANGE;
fORMATRANGE.chrg.cpMax = charTo;
fORMATRANGE.chrg.cpMin = charFrom;
fORMATRANGE.hdc = hdc;
fORMATRANGE.hdcTarget = hdc;
fORMATRANGE.rc = rc;
fORMATRANGE.rcPage = rcPage;
IntPtr intPtr = IntPtr.Zero;
IntPtr zero = IntPtr.Zero;
zero = new IntPtr(1);
IntPtr intPtr2 = IntPtr.Zero;
intPtr2 = Marshal.AllocCoTaskMem(Marshal.SizeOf(fORMATRANGE));
Marshal.StructureToPtr(fORMATRANGE, intPtr2, false);
intPtr = RichTextBoxPrint.SendMessage(box.Handle, 1081, zero, intPtr2);
Marshal.FreeCoTaskMem(intPtr2);
e.Graphics.ReleaseHdc(hdc);
return(intPtr.ToInt32());
}
public bool ProcessCMD(string cmd)
{
bool flag = cmd == "DoPrint";
if (flag)
{
RichTextBoxPrint richTextBoxPrint = new RichTextBoxPrint();
richTextBoxPrint.DoPrint(this.richTextBox1);
}
return(true);
}
