Global Mapper SDK
C++ Function Reference
GM_3DCloseViewWindow
GM_3DGetCameraPosition
GM_3DIsWindowOpen
GM_3DPositionCamera
GM_3DSaveViewToFile
GM_3DSetChangeViewCallback
GM_3DSetView
GM_AddAreaToVectorLayer
GM_AddCustomAreaClass
GM_AddCustomBrushStyle
GM_AddCustomDatum
GM_AddCustomEllipsoid
GM_AddCustomLineClass
GM_AddCustomPointClass
GM_AddCustomShader
GM_AddCustomSymbol
GM_AddLidarQueryToQuery
GM_AddLineToVectorLayer
GM_AddPointToVectorLayer
GM_AddRemovePointToLidarQuery
GM_AreProjectionsEquivalent
GM_CalcAreaElevStats
GM_CalcBearing
GM_CalcDistance
GM_CalcEnclosedArea
GM_CalcProjectedLocation
GM_CalcScaleRectangle
GM_CalcViewShed
GM_CalcVolumeAlongLine
GM_CalcVolumeOfArea
GM_CalcWorldRectSize
GM_CloseLayer
GM_ClosePackage
GM_CombineAreas
GM_CombineTerrainLayers
GM_ConvertCoordGroundToPixel
GM_ConvertCoordGroundToPixelWithOrientation
GM_ConvertCoordLayerGroundToPixel
GM_ConvertCoordLayerPixelToGround
GM_ConvertCoordPixelToGround
GM_ConvertCoordPixelToGroundWithOrientation
GM_CreateBufferArea
GM_CreateCustomElevGridLayer (DEPRECATED)
GM_CreateCustomElevGridLayerEx
GM_CreateCustomRasterLayer
GM_CreateCustomVectorLayer
GM_CreateEmptyLidarQuery
GM_CreateLidarQuery
GM_CreateS63UserPermitFile
GM_CreateVectorLayerFromFindResults
GM_CropLayerCollar (DEPRECATED)
GM_DBTestConnection
GM_DBTableList_GetTableName
GM_DBTableList_GetCount
GM_DBTableList_Free
GM_DBSelectTable
GM_DBSelectExportTable
GM_DBMakeConnectionString
GM_DBIsDatabaseFile
GM_DBGetTableList
GM_DecodeMGRSCoordinates
GM_DeleteFeature
GM_DrawGridLines
GM_DrawGridLinesEx
GM_DrawLayer
GM_DrawLayerList
GM_DrawLayerListToMemory
GM_DrawPackageList
GM_ExportElevation
GM_ExportElevationEx
GM_ExportMapLayoutComponent
GM_ExportPackage
GM_ExportPDF
GM_ExportRaster
GM_ExportRasterEx
GM_ExportRasterFromBitmap
GM_ExportVector(Ex)/GM_ExportVectorList
GM_ExportWebFormat
GM_FindFeaturesInArea
GM_FindNearestAddress
GM_FindNearestFeatures
GM_FlushLayerCache
GM_FreeAreaFeature
GM_FreeFeatureResultList
GM_FreeLidarQuery
GM_FreeLineFeature
GM_FreePointFeature
GM_GenerateContours(Ex)
GM_GenerateDensityGrid
GM_GenerateElevationGrid
GM_GenerateRoughnessGrid
GM_GenerateWatershed
GM_GetAreaFeature
GM_GetAreaFeatureClassDrawStyle
GM_GetAreaFeatureEx
GM_GetAvailableOnlineSourceList
GM_GetAvailableProjectionList
GM_GetAvailableSymbolNames
GM_GetDatumInfo
GM_GetElevationOverrides
GM_GetFeatureClassInfo
GM_GetFeatureElevation
GM_GetFilterString
GM_GetLastDrawnMapBounds
GM_GetLastDrawnMapBoundsEx
GM_GetLastDrawnScale
GM_GetLayerInfo
GM_GetLayerLidarStats
GM_GetLidarClassInfo
GM_GetLidarPoint
GM_GetLidarQueryInfo
GM_GetLineFeature
GM_GetLineFeatureClassDrawStyle
GM_GetLineFeatureEx
GM_GetLoadedLayerList
GM_GetLocationColor
GM_GetLocationElevation
GM_GetMACAddress
GM_GetMGRSCoordinates
GM_GetMiscOption
GM_GetNextLidarQueryPoints
GM_GetOnlineLayerZoomScale
GM_GetOnlineSourceInfo
GM_GetPackageLayerList
GM_GetPathProfile
GM_GetPathProfileLOS
GM_GetPathProfileLOSEx
GM_GetPixelBandValue
GM_GetPixelColor
GM_GetPixelColorRow
GM_GetPixelElevation
GM_GetPixelElevationRow
GM_GetPointFeature
GM_GetPointFeatureClassDrawStyle
GM_GetPointFeatureEx
GM_GetProgressCallback
GM_GetProjection
GM_GetRasterDisplayOptions
GM_GetSDKBuildDate
GM_GetSDKVersion
GM_GetSelectedFeatures
GM_GetShaderDisplayOptions
GM_GetVerticalDisplayOptions
GM_GPSGetAltitude
GM_GPSGetBearing
GM_GPSGetFixInfo
GM_GPSGetFixType
GM_GPSGetLocation
GM_GPSGetTime
GM_GPSGetTimeEx
GM_GPSGetVelocity
GM_GPSRenderVessel
GM_GPSStartTrackingNMEAFile
GM_GPSStartTrackingSerial
GM_GPSStartTrackingUSB
GM_GPSStopTracking
GM_InitLidarQueryFilter
GM_IsFeatureDeleted
GM_IsRegistered
GM_LidarClassFilter_IsClassEnabled
GM_LidarClassFilter_SetClassEnabled
GM_LoadGenericAsciiTextLayer
GM_LoadLayer (DEPRECATED)
GM_LoadLayerList
GM_LoadLayerListEx
GM_LoadMapLayoutFile
GM_LoadOnlineLayer
GM_LoadPackage
GM_LoadProjectionFile
GM_LoadProjectionFromEPSGCode
GM_LoadProjectionFromWKTString
GM_LoadRectifiedLayer
GM_LoadTerraServerLayer (DEPRECATED)
GM_MapCatalogAddFile
GM_MapCatalogAddLayer
GM_MapCatalogChangeMapOrder
GM_MapCatalogCreate
GM_MapCatalogDisableMap
GM_MapCatalogGetInfo
GM_MapCatalogGetMapInfo
GM_MapCatalogRemoveMap
GM_MapCatalogSave
GM_MapCatalogSetDisplayInfo
GM_MapCatalogSetMapOption
GM_ProjectionGetBase
GM_ProjectPoint
GM_ProjectPointAtElev
GM_ProjectPointFromECEF
GM_ProjectPointList
GM_ProjectPointToECEF
GM_ProjectRectangle
GM_RemoveCustomBrushStyle
GM_RemoveCustomShader
GM_RemoveCustomSymbol
GM_RepositionLayer
GM_RunScript
GM_SaveProjectionToFile
GM_SaveProjectionToString
GM_SaveWorkspace
GM_SaveWorkspaceEx
GM_SelectAreaStyle
GM_SelectFile
GM_SelectFont
GM_SelectLineStyle
GM_SelectProjection
GM_SelectProjectionEx
GM_SetAreaFeatureClassDrawStyle
GM_SetAreaFeatureDrawStyle
GM_SetAreaFeaturePointList
GM_SetAreaFeaturePointListEx
GM_SetBackgroundColor
GM_SetChildLayerOpCallback
GM_SetElevationOverrides
GM_SetExportCropAreas
GM_SetFeatureAttrList
GM_SetFeatureClass
GM_SetFeatureClassEnabled
GM_SetFeatureDescription
GM_SetFeatureLabel
GM_SetLayerDescription
GM_SetLayerElevationAttribute
GM_SetLayerElevationUnits
GM_SetLayerEnabled
GM_SetLayerHeightAttribute
GM_SetLayerHeightUnits
GM_SetLayerLabelAttribute
GM_SetLayerPalette
GM_SetLayerUserData
GM_SetLayerUserText
GM_SetLicenseKey
GM_SetLidarClassInfo
GM_SetLidarPoint
GM_SetLineFeatureClassDrawStyle
GM_SetLineFeatureDrawStyle
GM_SetLineFeaturePointList
GM_SetLineFeaturePointListEx
GM_SetMessageCallback
GM_SetMiscOption(Ex)
GM_SetOrientation
GM_SetPointFeatureClassDrawStyle
GM_SetPointFeatureDrawStyle
GM_SetPointFeaturePosition
GM_SetProgressCallback
GM_SetProjection(Ex)
GM_SetQueryProjectionCallback
GM_SetQuickPDFUnlockCode
GM_SetRasterDisplayOptions
GM_SetRegistrationInfo
GM_SetRegistryKey
GM_SetSettingsFilePath
GM_SetShaderDisplayOptions
GM_SetVectorDrawScale
GM_SetVerticalDisplayOptions
GM_ShowLayerOptionsDialog
GM_UpdateLidarQueryPoints
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GM_GetLastDrawnScale

Returns the last drawn scale (i.e. the XXXX portion of 1:XXXX). If nothing has been drawn, 0.0 is returned.

Syntax
Copy
double GM_GetLastDrawnScale
(
HDC                     aDC             // Device context that was drawn to
);