描述

 

决定这是否Font对象创建成功.

 

C++ Syntax

 

 

FreeBASIC 语法

 

 

参数

 

该方法没有参数.

 

返回值

 

如果字体构建成功,此方法将返回TRUE；否则,它返回FALSE.

 

引用文件

 

CGpFontFamily.inc (include CGdiPlus.inc)

 

示例

 

' ========================================================================================

' The following example creates a FontFamily object. If the FontFamily object is created

' successfully, the example draws text.

' ========================================================================================

SUB Example_IsAvailable (BYVAL hdc AS HDC)

 

  ' // Create a graphics object from the window device context

  DIM graphics AS CGpGraphics = hdc

  ' // Get the DPI scaling ratio

  DIM rxRatio AS SINGLE = graphics.GetDpiX / 96

  DIM ryRatio AS SINGLE = graphics.GetDpiY / 96

  ' // Set the scale transform

  graphics.ScaleTransform(rxRatio, ryRatio)

 

  ' // Create a FontFamily object

  DIM myFontFamily AS CGpFontFamily = "arial"

 

  ' // Check to see if myFontFamily is available.

  DIM isAvailable AS BOOLEAN = myFontFamily.IsAvailable

 

  ' // If myFontFamily is available, draw text.

  IF isAvailable THEN

     DIM solidBrush AS CGpSolidBrush = GDIP_ARGB(255, 0, 0, 0)

     DIM font AS CGpFont = CGpFont(@myFontFamily, AfxPointsToPixelsX(16) / rxRatio)

     DIM wszText AS WSTRING * 260 = "myFontFamily is available"

     graphics.DrawString(@wszText, -1, @font, 0, 0, @solidbrush)

  END IF

 

END SUB

' ========================================================================================