C++
bool operator !=( std::nullptr_t ) const;
Description
Compares the string for not empty.
Parameters
| Parameters | Description |
|---|---|
| nullptr | Only allowed value |
Returns
true if this string is not empty, false if empty.
- Customization Guide
- DXF Reference
- AutoLISP and DCL
- ObjectARX
- ObjectARX: Developer's Guide
- ObjectARX: Reference Guide
- What's New
- Migration Guide
- ObjectARX Reference Guide
- AcAp Classes
- AcAx Classes (WIN)
- AcBr Classes
- AcCm Classes
- AcDb Classes
- AcEd Classes (WIN)
- AcFd and CAcFdUi Classes
- AcGe Classes
- AcGi Classes
- AcGs Classes (WIN)
- AcLy Classes
- AcPl Classes (WIN)
- AcPublish Classes (WIN)
- AcRx Classes
- AcTransaction Classes
- AcTrayItem Classes (WIN)
- MFC Extension Classes (WIN)
- DWF Metadata Manager Classes (WIN)
- Property Palette Classes and Interfaces (WIN)
- Global Enums
- Global Functions
- Miscellaneous Classes
- Ac3dDwfNavTreeNode Class
- AcadAppInfo Class
- AcadToolImpl Template
- AcArray Template
- AcArrayMemCopyReallocator Template
- AcArrayObjectCopyReallocator Template
- AcArrayUtil Class
- AcCFile Class
- AcCStdioFile Class
- AcDmUtil Namespace
- AcDwgExtractor Namespace
- AcFILE Class
- AcHeapOperators Class
- AcIfstream Class
- AcLispAppInfo Class
- AcLocale Class
- AcNameValuePair Class
- AcOutputBufMgr Class
- AcPane Class
- AcPcPointAttributes Class
- AcPcPointDouble Class
- AcPcPointFloat Class
- AcPointCloudColorSchemeCollectionReactor Class
- AcPointCloudExtractedCylinder Class
- AcPointCloudExtractor Class
- AcPointCloudExtractResult Class
- AcPointCloudItem Class
- AcReCallout Class
- AcStackAllocator Class
- AcStatusBarItem Class
- AcStatusBarMenuItem Class
- AcString Class
- AcUnderlayLayer Class
- AcUniqueString Class
- AcValue Class
- AcViewFrustum Class
- AcXRefLayerPropertyOverride Class
- AdCharFormatter Class
- AdHostImageAppServices Class
- CProxy_PropertyNotifySink Template
- CRectangle3d Class
- ExtractOption Class
- GS Namespace
- IAcadAcCmColorAccess Class
- IAcadBaseDatabase Class
- IAcadBaseDatabaseImpl Template
- IAcadBaseObject Class
- IAcadBaseObject2 Class
- IAcadBaseObject2Impl Template
- IAcadBaseObjectImpl Template
- IAcadBaseSubEntity Class
- IAcadObjectDispatchImpl Template
- IAcDbPointCloudAttributeFilter Class
- IAcDbPointCloudDataBuffer Class
- IAcDbPointCloudPointProcessor Class
- IAcDbPointCloudSpatialFilter Class
- IAcPcDataBuffer Class
- IAcPcPointFilter Class
- IAcPcPointProcessor Class
- IAcReadStream Class
- IAcRxEnumeration Class
- IAcRxNonBlittableType Class
- IAcRxReferenceType Class
- IAcWriteStream Class
- IAdHostWindow Class
- IMetaColorSuppressor Class
- IPointCloudExtracProgressCallback Class
- IPointCloudFilter Class
- IPointCloudFilter2 Class
- IRelocateDrawing Interface
- OwnerDraw3d Class
- PointCloudBinaryOperatorFilter Class
- PointCloudIntersectionFilter Class
- PointCloudUnionFilter Class
- PointCloudXORFilter Class
- ProfileCurve2d Class
- RxADSAppTableEntryType Class
- Macros
- Structs
- Types and Unions
- DesignCenter Interfaces (WIN)
- eTransmit Interfaces (WIN)
- CAD Standards Interfaces (WIN)
- Tool Palette Classes and Interfaces (WIN)
- Additional Information
- ObjectARX: Release Notes