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                TeeChart可以保存多鐘格式的圖片,bmp、jpeg、pdf、gif等,對于這些功能的定義在CExport類中聲明。我們打開CExport類,看看它的成員函數有那些: ~~~ void CopyToClipboardBitmap(); void CopyToClipboardMetafile(BOOL Enhanced); void SaveToBitmapFile(LPCTSTR FileName); void SaveToFile(LPCTSTR FileName); void SaveToJPEGFile(LPCTSTR FileName, BOOL Gray, long Performance, long Quality, long Width, long Height); void SaveToMetafile(LPCTSTR FileName); void SaveToMetafileEnh(LPCTSTR FileName); void ShowExport(); CString SaveChartDialog(); void ConvertTeeFileToText(LPCTSTR InputFile, LPCTSTR OutputFile); VARIANT Stream(long StreamType); CJPEGExport GetAsJPEG(); CPNGExport GetAsPNG(); CGIFExport GetAsGIF(); CBMPExport GetAsBMP(); CPCXExport GetAsPCX(); CMetafileExport GetAsMetafile(); CNativeExport GetAsNative(); CXMLExport GetAsXML(); CXLSExport GetAsXLS(); CHTMLExport GetAsHTML(); CTextExport GetAsText(); void EmailFile(LPCTSTR FileName, LPCTSTR Subject); CPDFExport GetAsPDF(); CEPSExport GetAsEPS(); CSVGExport GetAsSVG(); CString GetLabelHeader(); void SetLabelHeader(LPCTSTR lpszNewValue); CXAMLExport GetAsXAML(); void SaveToXMLFile(LPCTSTR FileName, BOOL IncludeData, BOOL XMLHeader); VARIANT SaveToXMLStream(BOOL IncludeData, BOOL XMLHeader); ~~~ 很顯然,若想保存bmp格式的圖片,需要用SaveToBitmapFile函數,其參數就是圖片的絕對路徑。而SaveToJPEGFile函數是用來保存jpeg圖片的,它有五個參數,FileName是文件存儲的路徑,Gray表示是否保存為黑白圖像,Performance表示JPEG是生成質量優先還是速度優先,Quality是從0到100的整數,100表示生成的圖片質量最好,Width和Height表示圖片的像素,-1表示以TeeChart的寬和高。 下面是代碼示例,生成bmp和jpeg格式的圖片: ~~~ m_TeeChart.GetExport().SaveToBitmapFile("C:\\1.bmp"); m_TeeChart.GetExport().SaveToJPEGFile("C:\\4.jpeg", 0, 0, 100, -1,-1 ); //Gray為0表示生成彩色圖片 ~~~ 那么gif、png等其他格式的圖片如何保存呢?這就需要用到GetAsGIF、GetAsPNG這些類了: ~~~ m_TeeChart.GetExport().GetAsGIF().SaveToFile("C:\\1.gif"); //保存為GIF格式 m_TeeChart.GetExport().GetAsBMP().SaveToFile("C:\\1.bmp"); //保存為BMP格式 m_TeeChart.GetExport().GetAsJPEG().SaveToFile("C:\\1.jpeg"); //保存為jpeg格式 m_TeeChart/GetExport().GetAsPDF().SaveToFile("C:\\1.pdf"); //保存為pdf格式 ~~~
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