MStatus Class Reference
[OpenMaya - API module for common classes]

#include <MStatus.h>

List of all members.

---

Detailed Description

Manipulate Maya Status codes.

This class facilitates API level error handling. It encapsulates the status code and the internal MAYA error code as return by API functions. The user can query, set, print the error code along with the error description.

Examples:

affectsNode.cpp, animCubeNode.cpp, animExportUtil.cpp, animExportUtil.h, animFileExport.cpp, animFileUtils.cpp, animFileUtils.h, animImportExport.cpp, animImportExport.h, animInfoCmd.cpp, anisotropicShader.cpp, apiMeshCreator.cpp, apiMeshCreator.h, apiMeshData.cpp, apiMeshData.h, apiMeshShape.cpp, apiMeshShape.h, apiSimpleShape.cpp, apiSimpleShape.h, arcLenNode.cpp, asciiToBinary.cpp, AshliPluginMain.cpp, backfillShader.cpp, blindComplexDataCmd.cpp, blindDataMesh.cpp, blindDataMesh.h, blindDataPluginMain.cpp, blindDataShader.cpp, blindDataShader.h, blindDoubleDataCmd.cpp, blindShortDataCmd.cpp, brickShader.cpp, buildRotationNode.cpp, cellShader.cpp, cgfxAttrDef.cpp, cgfxFindImage.cpp, cgfxShaderCmd.cpp, cgfxShaderCmd.h, cgfxShaderNode.cpp, cgfxShaderNode.h, cgfxVector.cpp, cgfxVector.h, checkerShader.cpp, circleNode.cpp, cleanPerFaceAssignmentCmd.cpp, cleanPerFaceAssignmentCmd.h, cleanPerFaceAssignmentPluginMain.cpp, clearcoat.cpp, closestPointCmd.cpp, closestPointOnCurveCmd.cpp, closestPointOnCurveCmd.h, closestPointOnCurveNode.cpp, closestPointOnCurveNode.h, closestPointOnCurvePlugin.cpp, closestPointOnNurbsSurfaceCmd.cpp, closestPointOnNurbsSurfaceCmd.h, clothPaintAttrCmd.cpp, clothPaintAttrCmd.h, clusterWeightFunction.cpp, componentScaleManip.cpp, compositingShader.cpp, conditionTest.cpp, contrastShader.cpp, convertBumpCmd.cpp, convertEdgesToFacesCmd.cpp, convertVerticesToEdgesCmd.cpp, convertVerticesToFacesCmd.cpp, createClipCmd.cpp, curvedArrowsNode.cpp, customAttrManip.cpp, customImagePlane.cpp, cvColorNode.cpp, cvColorShader.cpp, cvExpandCmd.cpp, cvPosCmd.cpp, D3DResourceManager.cpp, D3DViewportRenderer.cpp, D3DViewportRenderer.h, D3DViewportRendererPlugin.cpp, dagMessageCmd.cpp, dagPoseInfoCmd.cpp, ddsFloatReader.cpp, deletedMsgCmd.cpp, depthShader.cpp, displacementShader.cpp, dynExprField.cpp, dynExprField.h, eventTest.cpp, exampleMRampAttribute.cpp, exportJointClusterDataCmd.cpp, exportSkinClusterDataCmd.cpp, fileIOMsgCmd.cpp, filteredAsciiFile.cpp, findFileTexturesCmd.cpp, findTexturesPerPolygonCmd.cpp, flameShader.cpp, flipUVCmd.cpp, flipUVCmd.h, flipUVMain.cpp, fluidInfoCmd.cpp, footPrintManip.cpp, footPrintNode.cpp, fullLoftNode.cpp, fxManagerCmd.cpp, fxManagerCmd.h, gammaShader.cpp, genericAttributeNode.cpp, geometryCacheConverter.cpp, geometryCacheFile.cpp, geometryCacheFile.h, geometrySurfaceConstraint.cpp, geometrySurfaceConstraint.h, geomShader.cpp, getAttrAffectsCmd.cpp, glExtensions.cpp, GLSLShaderNode.cpp, GLSLShaderNode.h, hairCollisionSolver.cpp, helix2Cmd.cpp, helixCmd.cpp, helixTool.cpp, helloCmd.cpp, helloWorld.cpp, helloWorldCmd.cpp, hlslPluginMain.cpp, hlslShader.cpp, hlslShader.h, hwAnisotropicShader_NV20.cpp, hwAnisotropicShader_NV20.h, hwColorPerVertexShader.cpp, hwDecalBumpShader_NV20.cpp, hwDecalBumpShader_NV20.h, hwManagedTextureShader.cpp, hwPhongShader.cpp, hwPhongShader.h, hwPhongShaderBehavior.cpp, hwPhongShaderBehavior.h, hwReflectBumpShader_NV20.cpp, hwReflectBumpShader_NV20.h, hwRefractReflectShader_NV20.cpp, hwRefractReflectShader_NV20.h, hwRenderPostEffect.cpp, hwToonShader_NV20.cpp, hwToonShader_NV20.h, hwUnlitShader.cpp, hwUnlitShader.h, iffInfoCmd.cpp, iffPixelCmd.cpp, iffPpmCmd.cpp, iffreader.cpp, iffreader.h, instanceCallbackCmd.cpp, instancerListCmd.cpp, interpShader.cpp, intersectCmd.cpp, intersectOnNurbsSurfaceCmd.cpp, intersectOnNurbsSurfaceCmd.h, jitterNode.cpp, jlcVcrDevice.cpp, lambertShader.cpp, lassoTool.cpp, latticeNoise.cpp, latticeNoise.h, latticeNoiseCmd.cpp, latticeNoiseNode.cpp, lavaShader.cpp, lepTranslator.cpp, lightShader.cpp, lineManip.cpp, lineManip.h, lineManipContainer.cpp, lineManipContainer.h, listLightLinksCmd.cpp, listPolyHolesCmd.cpp, lockEvent.cpp, marqueeTool.cpp, maTranslator.cpp, meshMapUtils.cpp, meshMapUtils.h, meshOpCmd.cpp, meshOpCmd.h, meshOpFty.h, meshOpFtyAction.cpp, meshOpMain.cpp, meshOpNode.cpp, meshOpNode.h, meshRemapCmd.cpp, meshRemapCmd.h, meshRemapTool.cpp, meshRemapTool.h, meshReorderCmd.cpp, meshReorderCmd.h, meshReorderPlugin.cpp, meshReorderTool.cpp, meshReorderTool.h, mixtureShader.cpp, motionPathCmd.cpp, motionTraceCmd.cpp, moveCurveCVsCmd.cpp, moveManip.cpp, moveNumericTool.cpp, moveTool.cpp, MTexture.cpp, multiCurveNode.cpp, narrowPolyViewer.cpp, narrowPolyViewer.h, narrowPolyViewerCmd.cpp, narrowPolyViewerCmd.h, narrowPolyViewerMain.cpp, nodeCreatedCBCmd.cpp, nodeCreatedCBCmd.h, nodeInfoCmd.cpp, nodeMessageCmd.cpp, NodeMonitor.cpp, NodeMonitor.h, noiseShader.cpp, objExport.cpp, offsetNode.cpp, OpenEXR.cpp, OpenGLViewportRenderer.cpp, OpenGLViewportRenderer.h, OpenGLViewportRendererPlugin.cpp, ownerEmitter.cpp, ownerEmitter.h, particleAttrNode.cpp, particleAttrNode.h, particleAttrNodeMain.cpp, particlePathsCmd.cpp, particleSystemInfoCmd.cpp, peltOverlapCmd.cpp, pfxInfoCmd.cpp, phongShader.cpp, pickCmd.cpp, pluginCallbacks.cpp, pluginMain.cpp, pnTrianglesNode.cpp, pnTrianglesNode.h, pointOnMeshCmd.cpp, pointOnMeshCmd.h, pointOnMeshInfoNode.cpp, pointOnMeshInfoNode.h, pointOnMeshInfoPlugin.cpp, pointOnSubdNode.cpp, pointOnSubdNode.h, polyExporter.cpp, polyExporter.h, polyMessageCmd.cpp, polyModifierCmd.cpp, polyModifierCmd.h, polyModifierFty.h, polyPrimitiveCmd.cpp, polyRawExporter.cpp, polyRawExporter.h, polyRawWriter.cpp, polyRawWriter.h, polyTrgNode.cpp, polyWriter.cpp, polyWriter.h, polyX3DExporter.cpp, polyX3DExporter.h, polyX3DWriter.cpp, polyX3DWriter.h, progressWindowCmd.cpp, quadricShape.cpp, readAndWrite.cpp, referenceQueryCmd.cpp, renderAccessNode.cpp, renderViewInteractiveRenderCmd.cpp, renderViewRenderCmd.cpp, renderViewRenderRegionCmd.cpp, rockingTransform.cpp, rockingTransform.h, rockingTransformCheck.cpp, rockingTransformCheck.h, rockingTransformCheckMain.cpp, rockingTransformMain.cpp, rotateManip.cpp, sampleCmd.cpp, sampleParticles.cpp, scanDagCmd.cpp, scanDagSyntax.cpp, ShadingConnection.cpp, shadowMatteShader.cpp, ShapeMonitor.cpp, shellNode.cpp, shiftNode.cpp, simpleEmitter.cpp, simpleEmitter.h, simpleFluidEmitter.cpp, simpleFluidEmitter.h, simpleImageFile.cpp, simpleLoftNode.cpp, simpleSolverNode.cpp, simpleSpring.cpp, simpleSpring.h, sineNode.cpp, slopeShader.cpp, slopeShaderBehavior.cpp, slopeShaderBehavior.h, slopeShaderNode.cpp, slopeShaderNode.h, solidCheckerShader.cpp, spiralAnimCurveCmd.cpp, splitUVCmd.cpp, splitUVCmd.h, splitUVFty.h, splitUVFtyAction.cpp, splitUVMain.cpp, splitUVNode.cpp, splitUVNode.h, squareScaleManip.cpp, squareScaleManip.h, squareScaleManipContext.cpp, squareScaleManipContext.h, stringFormatNode.cpp, surfaceBumpManip.cpp, surfaceCreate.cpp, surfaceCreateCmd.cpp, surfaceTwist.cpp, surfaceTwistCmd.cpp, sweptEmitter.cpp, sweptEmitter.h, swissArmyManip.cpp, testNobjectNode.cpp, testNobjectNode.h, testNucleusNode.cpp, testNucleusNode.h, threadTestCmd.cpp, threadTestWithLocksCmd.cpp, tiffFloatReader.cpp, torusField.cpp, torusField.h, transCircleNode.cpp, translateCmd.cpp, undoRedoMsgCmd.cpp, userMsgCmd.cpp, viewCallbackTest.cpp, viewCaptureCmd.cpp, volumeLightCmd.cpp, volumeShader.cpp, weightListNode.cpp, whatisCmd.cpp, XmlGeometryCache.cpp, yTwistNode.cpp, and zoomCameraCmd.cpp.

Public Types
enum	MStatusCode {   kSuccess = 0, kFailure, kInsufficientMemory, kInvalidParameter,   kLicenseFailure, kUnknownParameter, kNotImplemented, kNotFound,   kEndOfFile }
	Available Status Codes. More...
Public Member Functions
	MStatus ()
	MStatus (MStatusCode)
	MStatus (const MStatus &)
MStatus &	operator= (const MStatus &rhs)
bool	operator== (const MStatus &rhs) const
bool	operator== (const MStatusCode rhs) const
bool	operator!= (const MStatus &rhs) const
bool	operator!= (const MStatusCode rhs) const
bool	error () const
void	clear ()
MStatusCode	statusCode () const
MString	errorString () const
void	perror (const char *) const
void	perror (const MString &) const
void	set (bool status, unsigned char statusCode, unsigned char internalStatusCode)
	Internal use only.
void	setSuccess ()
	operator bool () const
	NO SCRIPT SUPPORT.
Friends
OPENMAYA_EXPORT std::ostream &	operator<< (std::ostream &, MStatus &)
	NO SCRIPT SUPPORT.
OPENMAYA_EXPORT bool	operator== (const MStatus::MStatusCode code, const MStatus &status)
	NO SCRIPT SUPPORT.
OPENMAYA_EXPORT bool	operator!= (const MStatus::MStatusCode code, const MStatus &status)
	NO SCRIPT SUPPORT.

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Member Enumeration Documentation

enum MStatus::MStatusCode

Available Status Codes.

Enumerator:

kSuccess	The operation was successful.
kFailure	The operation failed.
kInsufficientMemory	The operation failed due to insufficient memory.
kInvalidParameter	An invalid parameter was provided.
kLicenseFailure	Application is not licensed for the attempted operation.
kUnknownParameter	Returned by MPxNode::compute for unrecognised plugs.
kNotImplemented	Not currently used.
kNotFound	Not currently used.
kEndOfFile	Not currently used.

---

Constructor & Destructor Documentation

MStatus::MStatus

(

)

[inline]

The default class constructor. It initializes the internal detailed status code to kSuccess.

MStatus::MStatus

(

MStatus::MStatusCode

status

)

The constructor that takes a MStatus::MStatusCode. Initializes the internal detailed status code to status

Parameters:

[in]

status

The initial detailed status code.

MStatus::MStatus

(

const MStatus &

status

)

[inline]

The copy constructor of the class. Initialize a new MStatus object with the values from another MStatus object.

Parameters:

[in]

status

The target MStatus object.

---

Member Function Documentation

MStatus & MStatus::operator=

(

const MStatus &

rhs

)

[inline]

The copy operator of the class.

Parameters:

[in]

rhs

The MStatus object to copy from.

Returns:

A reference to the MStatus object that has been initialized.

bool MStatus::operator==

(

const MStatus &

rhs

)

const [inline]

The equivalence operator that takes another MStatus object.

Parameters:

[in]

rhs

A reference to the target object.

Returns:

• true the two MStatus objects are equal.
• false the two MStatus objects are not equal.

bool MStatus::operator==

(

const MStatusCode

rhs

)

const [inline]

The equivalence operator that takes a MStatus::MStatusCode.

Parameters:

[in]

rhs

a MStatus::MStatusCode, e.g. MS::kSuccess.

Returns:

• true the object has the given detailed status code.
• false the object does not have the given detailed status code.

bool MStatus::operator!=

(

const MStatus &

rhs

)

const [inline]

The not equal operator for MStatus.

Parameters:

[in]

rhs

a reference to the target object for comparison.

Returns:

• true the two MStatus objects are not equal.
• false the two MStatus objects are equal.

bool MStatus::operator!=

(

const MStatusCode

rhs

)

const [inline]

The not equal operator that takes a MStatus::MStatusCode.

Parameters:

[in]

rhs

a MStatus::MStatusCode, e.g. MS::kSuccess.

Returns:

• true the object does not have the given detailed status code.
• false the object has the given detailed status code.

bool MStatus::error

(

)

const [inline]

Determines whether there is an error.

Returns:

• true an error has occured.
• false the operation was successful

Examples:

dagMessageCmd.cpp, geometrySurfaceConstraint.cpp, and nodeCreatedCBCmd.cpp.

void MStatus::clear

(

)

[inline]

Clear error codes from the MStatus instance. After this call, it will behave as if it contained MS::kSuccess.

Examples:

cgfxShaderCmd.cpp, cgfxShaderNode.cpp, filteredAsciiFile.cpp, helix2Cmd.cpp, narrowPolyViewer.cpp, polyPrimitiveCmd.cpp, splitUVCmd.cpp, and XmlGeometryCache.cpp.

MStatus::MStatusCode MStatus::statusCode

(

)

const [inline]

Retrieve the type of error that occurred, as specified in the MStatusCode enumeration.

Returns:

The type of error that occurred.

Examples:

scanDagCmd.cpp, and scanDagSyntax.cpp.

MString MStatus::errorString

(

)

const

This method returns the internal error message as a MString object.

Returns:

A MString object which contains the error string.

Examples:

GLSLShaderNode.cpp, and nodeCreatedCBCmd.cpp.

void MStatus::perror

(

const char *

preString

)

const

This method prints the error string preceded by a string supplied by the user to the standard error stream.

Parameters:

[in]

preString

A pointer to char that points to a null terminated string.

Examples:

affectsNode.cpp, animCubeNode.cpp, animImportExport.cpp, animInfoCmd.cpp, arcLenNode.cpp, asciiToBinary.cpp, AshliPluginMain.cpp, blindComplexDataCmd.cpp, blindDataPluginMain.cpp, blindDoubleDataCmd.cpp, blindShortDataCmd.cpp, buildRotationNode.cpp, cgfxShaderCmd.cpp, cgfxVector.cpp, circleNode.cpp, cleanPerFaceAssignmentPluginMain.cpp, closestPointOnCurvePlugin.cpp, closestPointOnNurbsSurfaceCmd.cpp, clothPaintAttrCmd.cpp, clusterWeightFunction.cpp, conditionTest.cpp, convertBumpCmd.cpp, convertEdgesToFacesCmd.cpp, convertVerticesToEdgesCmd.cpp, convertVerticesToFacesCmd.cpp, createClipCmd.cpp, curvedArrowsNode.cpp, customAttrManip.cpp, customImagePlane.cpp, cvColorNode.cpp, cvPosCmd.cpp, D3DResourceManager.cpp, D3DViewportRenderer.cpp, D3DViewportRendererPlugin.cpp, dagPoseInfoCmd.cpp, deletedMsgCmd.cpp, dynExprField.cpp, eventTest.cpp, exampleMRampAttribute.cpp, exportJointClusterDataCmd.cpp, exportSkinClusterDataCmd.cpp, fileIOMsgCmd.cpp, findFileTexturesCmd.cpp, fluidInfoCmd.cpp, footPrintManip.cpp, footPrintNode.cpp, fullLoftNode.cpp, genericAttributeNode.cpp, geometryCacheConverter.cpp, geometrySurfaceConstraint.cpp, getAttrAffectsCmd.cpp, helix2Cmd.cpp, helixTool.cpp, helloWorld.cpp, hwAnisotropicShader_NV20.cpp, hwDecalBumpShader_NV20.cpp, hwPhongShader.cpp, hwReflectBumpShader_NV20.cpp, hwRefractReflectShader_NV20.cpp, hwToonShader_NV20.cpp, hwUnlitShader.cpp, iffInfoCmd.cpp, iffPixelCmd.cpp, iffPpmCmd.cpp, intersectOnNurbsSurfaceCmd.cpp, jitterNode.cpp, jlcVcrDevice.cpp, lassoTool.cpp, latticeNoise.cpp, latticeNoiseNode.cpp, lepTranslator.cpp, lineManip.cpp, lineManipContainer.cpp, lockEvent.cpp, meshOpMain.cpp, meshOpNode.cpp, meshReorderPlugin.cpp, motionPathCmd.cpp, motionTraceCmd.cpp, moveCurveCVsCmd.cpp, moveNumericTool.cpp, moveTool.cpp, narrowPolyViewer.cpp, narrowPolyViewerMain.cpp, nodeCreatedCBCmd.cpp, nodeInfoCmd.cpp, OpenGLViewportRenderer.cpp, OpenGLViewportRendererPlugin.cpp, ownerEmitter.cpp, particleAttrNodeMain.cpp, particlePathsCmd.cpp, particleSystemInfoCmd.cpp, peltOverlapCmd.cpp, pfxInfoCmd.cpp, pickCmd.cpp, pnTrianglesNode.cpp, pointOnMeshInfoPlugin.cpp, pointOnSubdNode.cpp, polyPrimitiveCmd.cpp, polyRawExporter.cpp, polyX3DExporter.cpp, progressWindowCmd.cpp, readAndWrite.cpp, referenceQueryCmd.cpp, renderViewInteractiveRenderCmd.cpp, renderViewRenderCmd.cpp, renderViewRenderRegionCmd.cpp, rockingTransformCheckMain.cpp, rockingTransformMain.cpp, sampleCmd.cpp, sampleParticles.cpp, scanDagCmd.cpp, scanDagSyntax.cpp, shellNode.cpp, simpleEmitter.cpp, simpleFluidEmitter.cpp, simpleLoftNode.cpp, simpleSolverNode.cpp, simpleSpring.cpp, sineNode.cpp, spiralAnimCurveCmd.cpp, splitUVMain.cpp, splitUVNode.cpp, squareScaleManip.cpp, surfaceCreate.cpp, surfaceCreateCmd.cpp, surfaceTwist.cpp, surfaceTwistCmd.cpp, sweptEmitter.cpp, swissArmyManip.cpp, testNobjectNode.cpp, testNucleusNode.cpp, torusField.cpp, transCircleNode.cpp, translateCmd.cpp, undoRedoMsgCmd.cpp, userMsgCmd.cpp, viewCallbackTest.cpp, and zoomCameraCmd.cpp.

void MStatus::perror

(

const MString &

preString

)

const

The second version of the perror() method. This method takes a reference to a MString as the parameter. It prints the error string preceded by the string supplied by the user to the standard error stream.

Parameters:

[in]

preString

a reference to a MString object that contains the prefix string.

void MStatus::set	(	bool	status,
		unsigned char	statusCode,
		unsigned char	internalStatusCode
	)			[inline]

Internal use only.

The method is called interally by Maya to construct MStatus objects. It should not be called from plugins.

Parameters:

[in]	status	true or false
[in]	statusCode	an element of MStatusCode
[in]	internalStatusCode	an internal Maya error code

Examples:

cvColorNode.cpp, GLSLShaderNode.cpp, and weightListNode.cpp.

void MStatus::setSuccess

(

)

[inline]

The method is called interally by Maya to set the status as success. It should not be called from plugins.

MStatus::operator bool

(

)

const [inline]

NO SCRIPT SUPPORT.

The conversion operator that converts a MStatus object to bool. The result it returns will be true if the MStatus does not contain an error, and false if it does.

---

Friends And Related Function Documentation

OPENMAYA_EXPORT std::ostream& operator<<	(	std::ostream &	out,
		MStatus &	status
	)			[friend]

NO SCRIPT SUPPORT.

The output operator of the class. This method outputs the detailed status code as well as the internal error description. The format of the output is "(errNumber): errorDescriptiveText".

Parameters:

[in]	out	The ostream object that the output should be directed to.
[in]	status	The MStatus object.

Returns:

A reference to the ostream object.