WinAPI: SetTextCharacterExtra - 设置字符间距

//声明:
SetTextCharacterExtra(
  DC: HDC;           {设备环境句柄}
  CharExtra: Integer {间距(按逻辑单位); 若映射模式不是 MM_TEXT, 则舍入到最接近的像素}
): Integer;          {返回字符间隔的先前值; 调用失败返回 $80000000 }


//举例:
procedure TForm1.FormPaint(Sender: TObject);
const
  str = '万一的 Delphi 博客';
begin
  TextOut(Canvas.Handle, 50, 50, str, Length(str));

  SetTextCharacterExtra(Canvas.Handle, 10);
  TextOut(Canvas.Handle, 50, 80, str, Length(str));
end;


//效果图:

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