Learn more about GDI + [45]: text output-text rendering quality

In this example:

Code File:

Unit unit1; interfaceuses windows, messages, extensions, variants, classes, graphics, controls, forms, dialogs, stdctrls; Type tform1 = Class (tform) combox1: tcombobox; Procedure formpaint (Sender: tobject); Procedure formcreate (Sender: tobject); Procedure combobox1change (Sender: tobject); end; var form1: tform1; implementation {$ R *. DFM} uses gdipobj, gdipapi, typinfo; Procedure tform1.formcreate (Sender: tobject); var I: integer; begin for I: = 0 to 5 do combobox1.items. add (getenumname (typeinfo (ttextrenderinghint), I); combobox1.itemindex: = 0; end; procedure merge (Sender: tobject); var G: tgpgraphics; B: tgpbrush; Font: tgpfont; begin G: = tgpgraphics. create (canvas. handle); B: = tgpsolidbrush. create (aclred); Font: = tgpfont. create ('arial black ', 150); G. settextrenderinghint (ttextrenderinghint (combobox1.itemindex); G. drawstring ('@',-1, Font, makepoint (0.0,-40.0), B); font. free; B. free; G. free; end; Procedure tform1.combobox1change (Sender: tobject); begin repaint; end.
 
   
 

Form file:

 
Object form1: tform1 left = 0 Top = 0 caption = 'form1' clientheight = 212 clientwidth = 221 color = clbtnface font. charset = default_charset font. color = clwindowtext font. height =-11 font. name = 'tahoma 'font. style = [] oldcreateorder = false position = pow.topcenter oncreate = formcreate onpaint = formpaint pixelsperinch = 96 textheight = 13 object combobox1: tcombobox left = 8 Top = 3 width = 207 Height = 21 itemheight = 13 taborder = 0 text = 'combox1' onchange = combobox1change endend

  
 

Text rendering quality mode:

Delphi	Microsoft	Description
Textrenderinghintsystemdefault	Systemdefault	When a prompt is displayed by default, use the bitmap of each character to draw characters. The text will be drawn using any font trim settings selected by the user for the system.
Textrenderinghintsinglebitperpixelgridfit	Singlebitperpixelgridfit	Draw characters using the symbolic bitmap of each character. The prompt is used to improve the appearance of Characters in the trunk and curved sections.
Textrenderinghintsinglebitperpixel	Singlebitperpixel	Draw characters using the symbolic bitmap of each character. Do not use the prompt.
Textrenderinghintantialiasgridfit	Antialiasgridfit	When prompted, draw characters using the de-sawtooth effect symbol bitmap of each character. Because of Antialias, the quality will be greatly improved, but it will also increase the performance cost.
Textrenderinghintantialias	Antialias	When no prompt is displayed, draw the characters using the de-sawtooth effect symbol bitmap of each character. Because of Antialias, the quality will be improved. Because the message is disabled, the width difference of the trunk may be obvious.
Textrenderinghintcleartypegridfit	Cleartypegridfit	Use the flag cleartype for each character when prompted Bitmap to draw characters. This is the highest quality setting. Use cleartype Font function.