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大家好，今天要讲的文章是关于如何比较两个solidworks文档。

下面是API的介绍：

（1）第一个为Close，这个API的含义为在比较solidworks文档以后执行必要的清理。下面是官方的具体解释：

其没有输入参数，返回值为定义的错误 gtError_e，其错误类型如下所示：

Member	Description
gtErrArgument1Incorrect	11001 = Feature paint 11001 thorugh 12000
gtErrArgument2Incorrect	11002
gtErrArgumentOutofRange	22
gtErrAssemblyInEditPartMode	26
gtErrBsdAlreadyOpen	Not used
gtErrBsdDefaultDrwTemplate	Not used
gtErrBsdDocNotSaved	Not used
gtErrBsdInvalidArg	Not used
gtErrBsdInvalidSaveLocationPath	Not used
gtErrBsdInvalidSheetFormatPath	Not used
gtErrBsdLowMemory	Not used
gtErrBsdNoActivePartDoc	Not used
gtErrBsdNoSheetMetalFeatureFound	Not used
gtErrBsdNotInitialized	Not used
gtErrBsdOpenedReadOnly	Not used
gtErrBsdUserCanceled	Not used
gtErrBsdVirtualComponent	Not used
gtErrCompareFacesFailed	7001 = Compare geometry 7001 through 8000
gtErrCompareFeaturesFailed	6001 = Compare features 6001 through 7000
gtErrCompareGeometryNotExecuted	7007
gtErrCompareVolFailed	7002
gtErrCompareVolumeNotExecuted	7013
gtErrCompDocsAlreadyOpen	5001 = Compare documents 5001 through 6000
gtErrCompDocsInvalidModConfig	5008
gtErrCompDocsInvalidModFile	5006
gtErrCompDocsInvalidRefConfig	5007
gtErrCompDocsInvalidRefFile	5005
gtErrCompDocsNotExecuted	5002
gtErrCompDocsOperationOptions	5003 = Operation out of range
gtErrCompDocsResultOptions	5004 = Result option out of range
gtErrCompDocsSameRefModFilesConfigs	5009
gtErrCompFeatAlreadyRunning	6004
gtErrCompFeatInvalidModConfig	6010
gtErrCompFeatInvalidModFile	6003
gtErrCompFeatInvalidRefConfig	6009
gtErrCompFeatInvalidRefFile	6002
gtErrCompFeatModNoSolidBodies	6007
gtErrCompFeatNotExecuted	6008
gtErrCompFeatRefNoSolidBodies	6006
gtErrCompFeatResultOptions	6005
gtErrCompFeatSameRefModFilesConfigs	6011
gtErrCompGeomAlreadyOpen	7008
gtErrCompGeomInvalidModConfig	7015
gtErrCompGeomInvalidModFile	7010
gtErrCompGeomInvalidRefConfig	7014
gtErrCompGeomInvalidRefFile	7009
gtErrCompGeomOperationOptions	7011
gtErrCompGeomResultOptions	7012
gtErrCompGeomSameRefModFilesConfigs	7016
gtErrCouldNotCreateReportFolders	14
gtErrDesignBinderReportAlreadyExists	30
gtErrDoc1NotSelected	33
gtErrDoc2NotSelected	34
gtErrDocInEditSketchMode	12
gtErrDocIsEmpty	5
gtErrDocNotSelected	2
gtErrDocOpenedViewOnly	8
gtErrDocsAreSame	4
gtErrDocsConfigNotExist	29
gtErrDocsConfigsAreSame	28
gtErrEdrawingFileAlreadyExists	12018
gtErrFaceComparisonNotPossibleInAssemblies	27
gtErrFacesIdentical	7003
gtErrFileAlreadyExists	20
gtErrFileNotFound	18
gtErrFindText	12019 = Property IFindReplaceAnnotations::FindText is not set
gtErrGckAlreadyOpen	8001 = Geometry analysis 8001 through 9000
gtErrGckDRTError	8003
gtErrGckInsufficientMemoryProvided	8006
gtErrGckInvalidEntityParamater	8008
gtErrGckNoActivePartDoc	8002
gtErrGckNoGetCountFunctionCalled	8005
gtErrGckNotInitialized	8007
gtErrGckResultsAlreadyPresent	8004
gtErrIncompatibleFile	6
gtErrIncorrectFileName	3
gtErrIncorrectReportPath	15
gtErrInvalidFile	17
gtErrNonSimilarParts	7004
gtErrNoPartDocs	25
gtErrNoSolidBodies	19
gtErrNoSourceFeature	11003
gtErrNoTargetFeature	11004
gtErrNoUI	12022
gtErrNoValidIndex	12023
gtErrOpeningFile	1
gtErrPslAlreadyRunning	10014
gtErrPslAngleOutofRange	10006
gtErrPslBothConvexConcaveNotSet	10004
gtErrPslColorOutofRange	10007
gtErrPslErrFilterTypeOutofRange	10010
gtErrPslErrOperatorOutofRange	10005
gtErrPslErrorInSelection	10017
gtErrPslFeatureTypeOutofRange	10008
gtErrPslIncorrectFeatureNameString	10009
gtErrPslIncorrectFeatureTypeArray	10018
gtErrPslNoActivePartDoc	10016
gtErrPslNoFeatureTypeFilterSet	10011
gtErrPslNoFilterSet	10002
gtErrPslNoSelectEntitySet	10001 = PowerSelect 10001 through 10019
gtErrPslNotInitialized	10015
gtErrPslNotRun	10013
gtErrPslResultOptions	10019
gtErrPslSpecifiedFilterNotSet	10003
gtErrPslUIRunning	10012
gtErrReferenceBOMNotSelected	31
gtErrReplaceText	12020 = Property IFindReplaceAnnotations::ReplaceText is not set
gtErrReportAlreadyExists	13
gtErrResultUIOn	23
gtErrRollback	11008
gtErrSameNameDocAlreadyOpen	7
gtErrSameSourceTargetFeature	11005
gtErrSavingFile	16
gtErrSavingVolDiffResults	7005
gtErrSharedByCompDocs	11
gtErrSharedByFeatDiff	10
gtErrSharedByGeomDiff	9
gtErrSourceFeatErr	11006
gtErrSourceFeatureRolledBack	11009
gtErrSourceNoBodyFeature	11011
gtErrTargetFeatErr	11007
gtErrTargetFeatureRolledBack	11010
gtErrTargetNoBodyFeature	11012
gtErrtckBodyDoesNotExist	12005
gtErrtckBodyNotSet	12006
gtErrtckNoActivePartDoc	12001 = Thickness analysis 12001 through 13000
gtErrTckNotInitialized	12004
gtErrTckNotPerformed	12015
gtErrTckNotValid	12016
gtErrTckResolution	12003
gtErrTckResultOptions	12002
gtErrtckTesselationFailed	12008
gtErrTcktThickRegnLimitNotInRange	12014
gtErrTcktTrgThicknessNotInRange	12013
gtErrtckUIRunning	12007
gtErrThicknessRangeNotValid	12017
gtErrToBeComparedBOMNotSelected	32
gtErrToolNotSupported	21  = Returned by IUtilities::GetToolInterface
gtErrUIInvoked	12021 = PropertyManager page is already displayed
gtErrUtilityAlreadyRunning	24
gtErrVolDiffResultsAlreadySaved	7006
gtNOErr	0 = No error
gtUnknownErr	-1 = Common -1 through 5000
gtWarningTckThickAnalRangeAboveMaxThick	12011
gtWarningTckThickAnalRangeBelowMaxThick	12012
gtWarningTckThinAnalMinMaxThckSameAsTrg	12010
gtWarningTckThinAnalRangeBelowMaxThick	12009

（2）第二个为CompareDocument2:，这个API的含义为比较指定的solidworks文档的属性并生成报告，下面是官方的具体解释：

下面是官方使用的例子，因为没有C#的，只有VBA的，如下所示：

This example shows how to compare the volumes of two parts and save the results of the comparison using the SOLIDWORKS Utilities API.

'------------------------------------------------------------------------------
' Preconditions:
' 1. Add the SOLIDWORKS Utilities as an add-in
'    (in SOLIDWORKS, click Tools > Add-Ins > SOLIDWORKS Utilities).
' 2. Add the SOLIDWORKS Utilities type library as a reference
'    (in the SOLIDWORKS Microsoft Visual Basic for Applications IDE, click
'    Tools > References > SolidWorks Utilities <version> Type Library).
' 3. Verify that the specified parts exist.
' 4. Verify that C:\test\ exists.
'
' Postconditions:
' 1. Creates the document comparison report, C:\test\Report\gtReportIndex.htm.
' 2. Gets document comparison statuses.
' 3. Examine C:\test\Report\gtReportIndex.htm.
'
' NOTE: Because the parts are used elsewhere, do not save changes.
'------------------------------------------------------------------------------
Option Explicit

Sub main()

    Dim swapp As SldWorks.SldWorksDim swUtil As SWUtilities.gtcocswUtilitiesDim swUtilCompdoc As SWUtilities.gtcocswCompareDocumentDim longStatus As LongDim bAddToBinder As BooleanDim bOverwrite As BooleanDim file1 As StringDim file2 As String

    ' Connect to SOLIDWORKSSet swapp = Application.SldWorks

   ' Get the SOLIDWORKS Utilities interfaceSet swUtil = swapp.GetAddInObject("Utilities.UtilitiesApp")

   ' Set the SOLIDWORKS Utilities tool to compare documentsSet swUtilCompdoc = swUtil.GetToolInterface(gtSwToolCompDocs, 0)

    ' Compare the volumes of the specified part documents; do not show the Results' dialog box, but do save the results to a file in the specified pathfile1 = "C:\Users\Public\Documents\SOLIDWORKS\SOLIDWORKS 2018\samples\tutorial\swutilities\bracket_a.sldprt"file2 = "C:\Users\Public\Documents\SOLIDWORKS\SOLIDWORKS 2018\samples\tutorial\swutilities\bracket_b.sldprt"bAddToBinder = FalsebOverwrite = TruelongStatus = swUtilCompdoc.CompareDocument2(file1, "", file2, "", gtCodVolumeCompare, gtResultSaveReport, "C:\test\Report", bAddToBinder, bOverwrite)

    ' Perform any necessary clean uplongStatus = swUtilCompdoc.Close()

End Sub

（3）第三个为SaveCompareVolumeResults，这个API的含义为比较完文档以后，将比较结果保存为solidworks部件文档，下面是官方的具体解释：

返回值和第一个API介绍的一致。

本篇文章要介绍的就是这些，我们下篇文章再见。