private string CharRangeToString(CHARRANGE c)
{
var lParam = new TEXTRANGE();
lParam.chrg = c;
//if ((c.cpMax > this.Text.Length) || ((c.cpMax - c.cpMin) <= 0))
//{
// return string.Empty;
//}
int size = (c.cpMax - c.cpMin) + 1;
CharBuffer buffer = CharBuffer.CreateBuffer(size);
IntPtr ptr = buffer.AllocCoTaskMem();
if (ptr == IntPtr.Zero)
{
throw new OutOfMemoryException("OutOfMemory");
}
lParam.lpstrText = ptr;
var num1 = (int)SendMessage(new HandleRef(this, base.Handle), 0x44b, 0, lParam);
buffer.PutCoTaskMem(ptr);
if (lParam.lpstrText != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(ptr);
}
return(buffer.GetString());
}
public static CHARRANGE FromManaged(CharacterRange input)
{
CHARRANGE result = new CHARRANGE();
result.cpMin = input.First;
result.cpMax = input.First + input.Length;
return(result);
}
/// <summary>Prints the specified character from.</summary>
/// <param name="charFrom">The character from.</param>
/// <param name="charTo">The character to.</param>
/// <param name="e">The <see cref="PrintPageEventArgs"/> instance containing the event data.</param>
/// <returns></returns>
public int Print(int charFrom, int charTo, PrintPageEventArgs e)
{
CHARRANGE cHARRANGE = new CHARRANGE();
FORMATRANGE fORMATRANGE = new FORMATRANGE();
RECT rECT = new RECT(), rECT1 = new RECT();
cHARRANGE.cpMin = charFrom;
cHARRANGE.cpMax = charTo;
Rectangle marginBounds = e.MarginBounds;
rECT1.Top = checked ((int)Math.Round((double)marginBounds.Top * 14.4));
marginBounds = e.MarginBounds;
rECT1.Bottom = checked ((int)Math.Round((double)marginBounds.Bottom * 14.4));
marginBounds = e.MarginBounds;
rECT1.Left = checked ((int)Math.Round((double)marginBounds.Left * 14.4));
marginBounds = e.MarginBounds;
rECT1.Right = checked ((int)Math.Round((double)marginBounds.Right * 14.4));
marginBounds = e.PageBounds;
rECT.Top = checked ((int)Math.Round((double)marginBounds.Top * 14.4));
marginBounds = e.PageBounds;
rECT.Bottom = checked ((int)Math.Round((double)marginBounds.Bottom * 14.4));
marginBounds = e.PageBounds;
rECT.Left = checked ((int)Math.Round((double)marginBounds.Left * 14.4));
marginBounds = e.PageBounds;
rECT.Right = checked ((int)Math.Round((double)marginBounds.Right * 14.4));
IntPtr hdc = e.Graphics.GetHdc();
fORMATRANGE.chrg = cHARRANGE;
fORMATRANGE.hdc = hdc;
fORMATRANGE.hdcTarget = hdc;
fORMATRANGE.rc = rECT1;
fORMATRANGE.rcPage = rECT;
IntPtr zero = IntPtr.Zero, intPtr = IntPtr.Zero;
intPtr = new IntPtr(1);
IntPtr zero1 = IntPtr.Zero;
zero1 = Marshal.AllocCoTaskMem(Marshal.SizeOf <FORMATRANGE>(fORMATRANGE));
Marshal.StructureToPtr <FORMATRANGE>(fORMATRANGE, zero1, false);
zero = SendMessage(Handle, 1081, intPtr, zero1);
Marshal.FreeCoTaskMem(zero1);
e.Graphics.ReleaseHdc(hdc);
return(zero.ToInt32());
}
internal static extern int SendMessage(IntPtr hWnd, int msg, int wParam, ref CHARRANGE range);
public static CharacterRange ToManaged(CHARRANGE input)
{
return(new CharacterRange(input.cpMin, input.cpMax - input.cpMin));
}
public string text; // Allocated by caller, zero terminated by RichEdit
public TEXTRANGE(int min, int max)
{
char_range = new CHARRANGE(min, max);
text = new string('\0', max - min);
}
private string CharRangeToString(CHARRANGE c)
{
var lParam = new TEXTRANGE();
lParam.chrg = c;
//if ((c.cpMax > this.Text.Length) || ((c.cpMax - c.cpMin) <= 0))
//{
// return string.Empty;
//}
int size = (c.cpMax - c.cpMin) + 1;
CharBuffer buffer = CharBuffer.CreateBuffer(size);
IntPtr ptr = buffer.AllocCoTaskMem();
if (ptr == IntPtr.Zero)
{
throw new OutOfMemoryException("OutOfMemory");
}
lParam.lpstrText = ptr;
var num1 = (int) SendMessage(new HandleRef(this, base.Handle), 0x44b, 0, lParam);
buffer.PutCoTaskMem(ptr);
if (lParam.lpstrText != IntPtr.Zero)
{
Marshal.FreeCoTaskMem(ptr);
}
return buffer.GetString();
}
private static extern void RichTextBox_CharRange(out CHARRANGE value);
