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 程式師世界 >> 編程語言 >> 更多編程語言 >> Delphi >> 再學GDI+[38]: 文本輸出 - DrawString、TGPFont

再學GDI+[38]: 文本輸出 - DrawString、TGPFont

編輯:Delphi

本例效果圖:

代碼文件:unit Unit1;
interface
uses
 Windows, Messages, SysUtils, Variants, Classes, Graphics, Controls, Forms,
 Dialogs, StdCtrls;
type
 TForm1 = class(TForm)
  Button1: TButton;
  Button2: TButton;
  procedure Button1Click(Sender: TObject);
  procedure Button2Click(Sender: TObject);
 end;
var
 Form1: TForm1;
implementation
{$R *.dfm}
uses GDIPOBJ, GDIPAPI;
procedure TForm1.Button1Click(Sender: TObject);
var
 g: TGPGraphics;
 sb: TGPSolidBrush;
 font: TGPFont;
begin
 g := TGPGraphics.Create(Canvas.Handle);
 sb := TGPSolidBrush.Create(aclBlack);
 {指定字體名和字號即可建立 TGPFont 類}
 font := TGPFont.Create('宋體', 9);
 g.DrawString('嬌女字平陽 折花倚桃邊 折花不見我 淚下如流泉', -1, font, MakePoint (10.0,20), sb);
 {參數 2 為 -1 表示輸出所有指定字符; 參數 4 必須為 TGPPointF 結構}
 font.Free;
 sb.Free;
 g.Free;
end;
procedure TForm1.Button2Click(Sender: TObject);
var
 g: TGPGraphics;
 sb: TGPSolidBrush;
 font: TGPFont;
begin
 g := TGPGraphics.Create(Canvas.Handle);
 sb := TGPSolidBrush.Create(aclBlack);
 {借用其他 DC 的特征建立 TGPFont 類; 但好像不能繼承所有特征, 譬如字體顏色}
 Canvas.Font.Name := '宋體';
 Canvas.Font.Size := 9;
 font := TGPFont.Create(Canvas.Handle);
 g.DrawString('小兒名伯禽 與姊亦齊肩 雙行桃樹下 撫背復誰憐', -1, font, MakePoint (10.0,40), sb);
 font.Free;
 sb.Free;
 g.Free;
end;
end.

窗體文件:object Form1: TForm1
 Left = 0
 Top = 0
 Caption = 'Form1'
 ClientHeight = 105
 ClientWidth = 282
 Color = clBtnFace
 Font.Charset = DEFAULT_CHARSET
 Font.Color = clWindowText
 Font.Height = -11
 Font.Name = 'Tahoma'
 Font.Style = []
 OldCreateOrder = False
 Position = poDesktopCenter
 PixelsPerInch = 96
 TextHeight = 13
 object Button1: TButton
  Left = 64
  Top = 68
  Width = 75
  Height = 25
  Caption = 'Button1'
  TabOrder = 0
  OnClick = Button1Click
 end
 object Button2: TButton
  Left = 145
  Top = 68
  Width = 75
  Height = 25
  Caption = 'Button2'
  TabOrder = 1
  OnClick = Button2Click
 end
end

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