C#

Alquerque wrote:

Anyone could help me?

// Either
myTextBox.Text = string.Format(formatString goes here, numberVariable);

// Or
myTextBox.Text = numberVariable.ToString(format string goes here);

public void DrawToBitmap(Bitmap bitmap) {
	//Calculate the area to render and print
	RECT rectToPrint;
	rectToPrint.Top = 0;
	rectToPrint.Bottom = (int)(bitmap.Height*anInch);
	rectToPrint.Left = 0;
	rectToPrint.Right = (int)(bitmap.Width*anInch);

	//Calculate the size of the page
	RECT rectPage;
	rectPage.Top = 0;
	rectPage.Bottom = (int)(bitmap.Height*anInch);
	rectPage.Left = 0;
	rectPage.Right = (int)(bitmap.Width*anInch);

	Graphics g=Graphics.FromImage(bitmap);
	IntPtr hdc = g.GetHdc();

	FORMATRANGE fmtRange;
	// [0,-1]=everything
	fmtRange.chrg.cpMax = -1;				//Indicate character from to character to 
	fmtRange.chrg.cpMin = 0;
	fmtRange.hdc = hdc;                    //Use the same DC for measuring and rendering
	fmtRange.hdcTarget = hdc;              //Point at printer hDC
	fmtRange.rc = rectToPrint;             //Indicate the area on page to print
	fmtRange.rcPage = rectPage;            //Indicate size of page

	IntPtr res = IntPtr.Zero;

	IntPtr wparam = IntPtr.Zero;
	wparam = new IntPtr(1);

	//Get the pointer to the FORMATRANGE structure in memory
	IntPtr lparam= IntPtr.Zero;
	lparam = Marshal.AllocCoTaskMem(Marshal.SizeOf(fmtRange));
	Marshal.StructureToPtr(fmtRange, lparam, false);

	//Send the rendered data for printing 
	res = SendMessage(Handle, EM_FORMATRANGE, wparam, lparam);

	//Free the block of memory allocated
	Marshal.FreeCoTaskMem(lparam);

	//Release the device context handle obtained by a previous call
	g.ReleaseHdc(hdc);

}

Jon Hulatt wrote:

only one thread per process actually gets executed by GDI+ at a time