Prompt for objects on screen and iterate the selection set This example prompts the user to select objects, then changes the color of each object selected to Green or the AutoCAD Color Index of 3. NET Imports Autodesk. Runtime Imports Autodesk. ApplicationServices Imports Autodesk.
DatabaseServices Imports Autodesk. GetObject acSSObj. C using Autodesk. Runtime; using Autodesk. ApplicationServices; using Autodesk. DatabaseServices; using Autodesk. ObjectId, OpenMode. ForWrite as Entity; if acEnt! Add "SS1" ' Prompt the user to select objects ' and add them to the selection set.
Delete End Sub. Thanks everyone for the feedback, Jeff. Message 6 of Message 7 of Thanks, Jeff. Message 8 of I have plenty of this C working code, let me know if you need something like this. Message 9 of GetObject OpenMode. UpgradeOpen thisBlockRef. Commit End Using It only bothers with the current space. My next steps are going to be to step into blocks and xrefs so I could use your help. Thank you, Jeff. Message 10 of GetObject db. GetFileNameWithoutExtension db.
GetObject bt[ BlockTableRecord. ModelSpace], OpenMode. PaperSpace], OpenMode. GetObject br. DynamicBlockTableRecord : br. BlockTableRecord, OpenMode. IsFromExternalReference btr.
Message 11 of Here is where I am at: VB. GetObject thisBlockRef. IsWithin thisBlockRef. ForRead , Viewport 'If a window is provided make sure the block is within it IsWithin myVP.
X, myVP. X - myVP. Y - myVP. GetObject HostApplicationServices. ModelSpace , OpenMode. MinPoint, windowPt1, windowPt2 Tools. MaxPoint, windowPt1, windowPt2 Tools. IsWithin new Point3d myVP. Y, 0 , windowPt1, windowPt2 Tools. Message 12 of As with the Window option, only objects which fall entirely within the polygon will be selected.
Command: start one of the Modify commands Select objects: WP First polygon point: pick first point Specify endpoint of line or [Undo]: pick second point Specify endpoint of line or [Undo]: pick third point Specify endpoint of line or [Undo]: pick another point or to end polygon selection Select objects: to complete the selection set or add more objects.
The Crossing Polygon option can be used in exactly the same way as the Window Polygon option but it has the same selection criteria as the Crossing Window option, i.
This option is invoked by typing CP at the "Select objects" prompt. Note: Lines, polygons and windows drawn using the selection options do not exist as drawing objects.
Once the selection has been made they disappear. AutoCAD always remembers the last selection set you defined. This is very useful because you may need to make a number of changes using different commands to the same group of objects.
In order to re-select the last selection set you can use the Previous option. The previous option is invoked by typing P at the "Select objects" prompt. You can select the last object created by entering L at the "Select objects" prompt. When drawings become complicated it is sometimes difficult to select the particular object you want because it is either very close to or overlies another object.
In such a case it may happen that the other object is selected and not the one you want. Object cycling is designed to overcome this problem. If you continue to pick, each object near the pick point is highlighted in rotation.
AutoCAD provides two methods for adding and removing objects to and from a selection set. As you know, objects can be added to a selection set simply by picking them or by using one of the methods outlined above. You can remove selected objects from a selection set just as easily by shift picking.
If you hold the Shift key down on the keyboard while picking a selected object, that object will be deselected removed from the current selection set. You can tell when a selected object has been deselected because it is no longer highlighted. You can remove more than one object at a time by holding down the Shift key while using implied windowing. However, none of the other selection options which require keyboard input will work using the shift pick method. If you need to remove a more complex selection from the current selection set you should use the Remove option to switch to Remove mode.
Objects now picked or selected using any of the above methods will be removed from the current selection set. When you have finished removing objects, you can return to Add mode by entering A at the "Remove objects" prompt. Once you are happy that you have selected all the objects you need, just hit to complete the selection process and to continue with the current command.
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