COLOR AND FONTS

Color: GDI provides a hardware independent color interface. We supply the absolute color code, and the GDI maps that code to a suitable color or color combination on computer’s video display.

Ø SetTextColor() is a CDC class member function and it specifies the color in which the text should be displayed.

Ø SetBkColor()is a CDC class member function and it specifies the background color.

Ø RGB() function is used to specify color combination.

Ø We can create our own pen & brush with specific color combination for drawing text.

CBrushb(RGB(255,0,0));//Brush with red color.

CPenp(RGB(0,255,0));//Pen with blue color.

SelectObject(&obj) is used to select appropriate pen or brush for drawing purpose.

Ex: Void OnPaint()

{

CPaintDCd(this);

d.SetTextColor(RGB(255,0,0));

d.SetBkColor(RGB(0,0,255));

d.TextOut(100,100,”Hello”);

CBrushb(RGB(255,0,0));

CPenp(RGB(0,255,0));

d.SelectObject(&b);

d.SelectObject(&p);

d.Ellipse(25,25,100,100);

        }

Font: Three types of fonts are supported by windows:

Ø Raster Fonts:Can be displayed fast, but cannot be compressed or expanded to an arbitrary size.

Ø Stock Fonts: Defined as a series of line segments in a ‘Connect-the-dot’ format. Can be compressed or expanded to arbitrary size but suffers from poor quality.

Ø True Fonts: Best and can be used in flexible manner. Some true fonts are Times New Roman, Arial, Arial Italic, Courier New etc.

CreateFont() method  is used to create a new font:

Syntax: CreateFont(Height,Width,Escapement,Orientation,Weight,Italic,Underline, StrickOut,CharSet,OutPrecision,ClipPrecision,Quality,PitchAndFamily,lpszFacename)

Height: Height of character in pixel.

Width: Width of character in pixel.

Escapment: Angle between the Escapment vector and X-axis (0-180)

Orientation:Specify orientation of text (0-Horizontal (W), 1-Verticle (Σ))

Weight: Specify thickness of character. (FW_BOLD, FW_THIN, FW_ULTRATHIN, etc) .

Italic: 0/1 Underline: 0/1 StrickOut: 0/1 CharSet: DEFAULT_CHARSET

OutPrecision,ClipPrecision,Quality,PitchAndFamilyare set to 0,used for alignment of text.

lpszFaceName: Times New Roman, Arial, Arial Italic, Courier New etc.

Ex: Void OnPaint()

           {

CPaintDCd(this);

CFontMyfont;

Myfont.CreateFont(50 ,30 ,0 ,0 ,FW_BOLD ,1 ,1 ,0 ,             DEFAULT_CHARSET, 0 ,0 ,0 ,0 ,”Arial”);

d.SelectObject(&Myfont);

d.TextOut(100,100,”Hello”);

  }