图表图例

图例位置

为了设置图例属性。请按照以下步骤操作：

• 创建 Presentation 类的实例。
• 获取幻灯片的引用。
• 在幻灯片上添加图表。
• 设置图例的属性。
• 将演示文稿写入 PPTX 文件。

在下面给出的示例中，我们为图表图例设置了位置和大小。

For complete examples and data files, please go to https://github.com/aspose-slides/Aspose.Slides-for-C

	// The path to the documents directory.
	const String outPath = L"../out/legendCustomOptions_out.pptx";

	//Instantiate Presentation class that represents PPTX file
	SharedPtr<Presentation> pres = MakeObject<Presentation>();

	//Access first slide
	SharedPtr<ISlide> slide = pres->get_Slides()->idx_get(0);

	// Add chart with default data
	SharedPtr<IChart> chart = slide->get_Shapes()->AddChart(Aspose::Slides::Charts::ChartType::ClusteredColumn, 0, 0, 500, 500);
	// Set Legend Properties
	chart->get_Legend()->set_X ( 50 / chart->get_Width());
	chart->get_Legend()->set_Y ( 50 /  chart->get_Height());
	chart->get_Legend()->set_Width ( 100 / chart->get_Width());
	chart->get_Legend()->set_Height ( 100 / chart->get_Height());

	// Write the presentation file to disk
	pres->Save(outPath, Aspose::Slides::Export::SaveFormat::Pptx);

设置图例字体大小

Aspose.Slides for C++ 允许开发人员设置图例的字体大小。请按照以下步骤操作：

• 实例化 Presentation 类。
• 创建默认图表。
• 设置字体大小。
• 设置最小轴值。
• 设置最大轴值。
• 将演示文稿写入磁盘。

For complete examples and data files, please go to https://github.com/aspose-slides/Aspose.Slides-for-C

	// The path to the documents directory.
	const String outPath = u"../out/SettingFontSizeOfLegend_out.pptx";

	//Instantiate Presentation class that represents PPTX file
	SharedPtr<Presentation> pres = MakeObject<Presentation>();

	//Access first slide
	SharedPtr<ISlide> slide = pres->get_Slides()->idx_get(0);

	// Add chart with default data
	SharedPtr<IChart> chart = slide->get_Shapes()->AddChart(Aspose::Slides::Charts::ChartType::ClusteredColumn, 0, 0, 500, 500);

	//Setting legend properties
	chart->get_Legend()->get_TextFormat()->get_PortionFormat()->set_FontHeight (20);

	chart->get_Axes()->get_VerticalAxis()->set_IsAutomaticMinValue (false);

	chart->get_Axes()->get_VerticalAxis()->set_MinValue (-5);

	chart->get_Axes()->get_VerticalAxis()->set_IsAutomaticMaxValue (false);

	chart->get_Axes()->get_VerticalAxis()->set_MaxValue ( 10);

	// Write the presentation file to disk
	pres->Save(outPath, Aspose::Slides::Export::SaveFormat::Pptx);

设置单个图例的字体大小

Aspose.Slides for C++ 允许开发人员设置单个图例条目的字体大小。请按照以下步骤操作：

• 实例化 Presentation 类。
• 创建默认图表。
• 访问图例条目。
• 设置字体大小。
• 设置最小轴值。
• 设置最大轴值。
• 将演示文稿写入磁盘。

For complete examples and data files, please go to https://github.com/aspose-slides/Aspose.Slides-for-C

	// The path to the documents directory.
	const String outPath = u"../out/SettingFontSizeOfIndividualLegend_out.pptx";

	//Instantiate Presentation class that represents PPTX file
	SharedPtr<Presentation> pres = MakeObject<Presentation>();

	//Access first slide
	SharedPtr<ISlide> slide = pres->get_Slides()->idx_get(0);

	// Add chart with default data
	SharedPtr<IChart> chart = slide->get_Shapes()->AddChart(Aspose::Slides::Charts::ChartType::ClusteredColumn, 0, 0, 500, 500);

	//Setting legend properties

	SharedPtr<IChartTextFormat> tf = chart->get_Legend()->get_Entries()->idx_get(1)->get_TextFormat();

	tf->get_PortionFormat()->set_FontBold (NullableBool::True);

	tf->get_PortionFormat()->set_FontHeight(20);

	tf->get_PortionFormat()->set_FontItalic(NullableBool::True);

	tf->get_PortionFormat()->get_FillFormat()->set_FillType(FillType::Solid) ;

	tf->get_PortionFormat()->get_FillFormat()->get_SolidFillColor()->set_Color(System::Drawing::Color::get_Blue());

	// Write the presentation file to disk
	pres->Save(outPath, Aspose::Slides::Export::SaveFormat::Pptx);