Command Interface

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LiteCAD's command interface promotes the easy creation of a fully functional CAD application. Almost all functionality can be accessed via the lcWndExeCommand function.  In contrast to programmatically managing entities, the command interface permits interactive editing, using the mousepointer and keyboard.  These interactive commands can be assigned directly to an application's menus, buttons and accelerator keys. 

For example, an application might have a menu item "Draw Line".  LiteCAD has a function lcBlockAddLine that creates a line, but this function requires endpoints coordinates as arguments, therefore the programmer must write code that allows these coordinates to be passed to the function.  Meanwhile, the command interface can be used instead, which only requires one line of code for the menu selection: lcWndExeCommand( hWnd, LC_CMD_LINE, 0 ) .  When the user selects this menu item, he can draw a line in the LiteCAD window using the mousepointer. 


List of commands identifiers

• File
• View
• Format
• Add graphics objects to a drawing
• Edit operations
• Magnifier
• Miscellaneous

Value	Meaning
File
LC_CMD_FILENEW	New drawing
LC_CMD_FILEOPEN	Call dialog "Select File" to load a drawing from a file
LC_CMD_FILEINSERT	Call dialog "Select File" to insert a drawing into current drawing
LC_CMD_FILERECENT	Call dialog "Recent Files List"
LC_CMD_FILESAVE	Save drawing to file. Call dialog "Save As" if filename is undefined
LC_CMD_FILESAVEAS	Call dialog "Save File As"
LC_CMD_FILECLOSE	Close file (for window created with style LC_WS_FILETABS)
LC_CMD_PRINT	Call dialog "Print"
LC_CMD_RASTERIZE	Export a drawing into raster image
View drawing
LC_CMD_ZOOM_IN	Enlarge drawing's view
LC_CMD_ZOOM_OUT	Diminish drawing's view
LC_CMD_ZOOM_EXT	Zoom on drawing extents
LC_CMD_ZOOM_WIN LC_CMD_ZOOM_RECT	Zoom drawing using the Zoom rectangle (Zoom Box)
LC_CMD_ZOOM_PREV	Show the previous view
LC_CMD_ZOOM_SEL	Show all selected entities
LC_CMD_PAN_LEFT	Shift drawing to the right
LC_CMD_PAN_RIGHT	Shift drawing to the left
LC_CMD_PAN_UP	Shift drawing downward
LC_CMD_PAN_DOWN	Shift drawing upward
LC_CMD_PAGENEXT	Display next layout
LC_CMD_PAGEPREV	Display previous layout
LC_CMD_PAGEMODEL	Display "Model Space" layout
LC_CMD_3DVIEW	Enable/disable "3D View" tab
Format
LC_CMD_LAYER	Call dialog "Layers"
LC_CMD_LAYERORD	Call dialog "Layers order"
LC_CMD_COLOR	Call dialog "Color"
LC_CMD_FCOLOR	Call dialog "Filling Color"
LC_CMD_LINETYPE	Call dialog "Linetypes"
LC_CMD_TEXTSTYLE	Call dialog "Text Styles"
LC_CMD_PNTSTYLE	Call dialog "Point Styles"
LC_CMD_DIMSTYLE	Call dialog "Dimension Styles"
LC_CMD_LINFILL	Call dialog "Filling Styles"
LC_CMD_IMAGE	Call dialog "Raster Images Manager"
LC_CMD_BLOCKS	Call dialog "Blocks"
LC_CMD_LAYOUT	Call dialog "Layouts"
LC_CMD_BLOCK LC_CMD_CREBLOCK	Create a Block from selected entities
LC_CMD_DRWPRM	Call dialog "Drawing's parameters"
Add graphic objects to a drawing
LC_CMD_POINT	Draw Point
LC_CMD_LINE	Draw Line
LC_CMD_XLINE	Draw Constuction line
LC_CMD_POLYLINE LC_CMD_PLINE	Draw Polyline
LC_CMD_SPLINE	Draw Polyline with LC_PROP_PLINE_FIT = LC_PLFIT_SPLINE
LC_CMD_RPOLYGON	Draw Regular polygon (equilateral closed polyline)
LC_CMD_SKETCH	Draw polylines as a sketch
LC_CMD_CLOUD	Draw polylines as cloud sketch
LC_CMD_MLINE	Draw Multiline
LC_CMD_RECT	Draw Rectangle
LC_CMD_CIRCLE	Draw Circle
LC_CMD_ARC	Draw Arc
LC_CMD_ELLIPSE	Draw Ellipse
LC_CMD_SHAPE	Create Shape from selected entities
LC_CMD_SPIRAL	Draw Spiral
LC_CMD_TEXT	Draw Text
LC_CMD_ATEXT LC_CMD_ARCTEXT	Draw Arc Text
LC_CMD_MTEXT	Draw Multiline Text
LC_CMD_ATTDEF	Convert Text entity into Attribute Definition
LC_CMD_BARCODE	Draw Barcode
LC_CMD_DIMLIN LC_CMD_DIMROT	Draw Dimension linear (rotated)
LC_CMD_DIMALI	Draw Dimension aligned
LC_CMD_DIMORD	Draw Dimension ordinate
LC_CMD_DIMRAD	Draw Dimension radius
LC_CMD_DIMDIA	Draw Dimension diameter
LC_CMD_DIMANG	Draw Dimension angular
LC_CMD_LEADER	Draw Leader
LC_CMD_ARROW	Draw Arrow
LC_CMD_HATCH	Draw Hatch
LC_CMD_IMAGE	Insert Raster Image
LC_CMD_ECW	Insert ECW / Jpeg2000 Image
LC_CMD_INSERT LC_CMD_BLOCKREF	Insert Block reference
LC_CMD_VPORT LC_CMD_VIEWPORT	Insert Viewport
LC_CMD_FACE	Draw 3D Face
Edit operations
LC_CMD_UNDO	Undo last change
LC_CMD_REDO	Reverse last "undo"
LC_CMD_UNDOCLEAR	Clear Undo buffer
LC_CMD_CBCUT	Cut entities to clipboard
LC_CMD_CBCOPY	Copy entities to clipboard
LC_CMD_CBPASTE	Paste entities from clipboard
LC_CMD_ERASE	Erase entities
LC_CMD_COPY	Copy entities
LC_CMD_MOVE	Move entities
LC_CMD_ROTATE	Rotate entities
LC_CMD_SCALE	Scale entities
LC_CMD_SCALEBLK	Calls the dialog to scale all entities of active block
LC_CMD_MIRROR	Mirror entities
LC_CMD_EXPLODE	Explode entities
LC_CMD_SPLIT	Split entities
LC_CMD_JOIN	Join linked entities into a polyline
LC_CMD_JOINALL	Join all linked entities in several polylines
LC_CMD_TRIM	Trim entities
LC_CMD_EXTEND	Extend entities
LC_CMD_BREAK	Break entities
LC_CMD_OFFSET	Offset entities
LC_CMD_FILLET	Insert fillet arc between lines, arcs, circles
LC_CMD_ORDER	Change entities order
LC_CMD_ORDER_SEQ	Set entities sequence manually
LC_CMD_ALIGN	Align entities
LC_CMD_CLOSEBLOCK	Exit from Close "Edit Block" mode
LC_CMD_BASEPOINT	Set position of a block basepoint
LC_CMD_IMGRES	Set resolution of selected raster image
LC_CMD_IMGPOS	Set position and rotation of selected raster image
LC_CMD_DELOVER	Delete or clip overlapped lines
Magnifier
LC_CMD_MAG...	See here...
Triangulated Irregular Network (TIN)
LC_CMD_TIN_...	See here...
Miscellaneous
LC_CMD_GRID	Call dialog "Coordinate Grid"
LC_CMD_OSNAP	Call dialog "Object Snap"
LC_CMD_PTRACK	Call dialog "Polar Tracking"
LC_CMD_SELOPTS	Call dialog "Selection Options"
LC_CMD_KBMOVE	Call dialog "Move entities by keyboard"
LC_CMD_DIST	Measure distance
LC_CMD_AREA	Measure Area
LC_CMD_HELP	Display Context Help
LC_CMD_RESET	Cancel currently active command, de-select all entities, redraw drawing
LC_CMD_SW_GRID	Switch on/off "Show coordinate grid" mode
LC_CMD_SW_GRIDSNAP	Switch on/off "Snap to coordinate grid" mode
LC_CMD_SW_OSNAP	Switch on/off "Object Snap" mode
LC_CMD_SW_PTRACK	Switch on/off "Polar tracking" mode
LC_CMD_SW_ORTHO	Switch on/off "Ortho" mode
LC_CMD_CLIPRECTS	Call dialog "Clipping Rectangles"
LC_CMD_PLUGINS	Call dialog "Plugins"
LC_CMD_UNHIDE	Unhide all hidden entities (LC_PROP_ENT_HIDDEN)
LC_CMD_UNSIMG	On/Off "Unscalable" flag of selected image reference entities
LC_CMD_UPDATE	Update all entities (or selected) in current block
LC_CMD_ENTEXT	On/Off visibility of entities extents

See also

  Custom commands