C.2.82 4D CAD 1.0d9

• (098) Fixed selecting circle-arcs and ellipse-arcs with near-equal start/end-angles.
  
  
• (099) Fixed bugs in CADRemoveLayer .
  
  
• (100) CADSetLayerAttributes now automatically deselects objects if the new layer/sublayer mode is not kCADLayerModeEditable .
  
  
• (101) Solved bug where CADSetLayer caused redraw problems.
  
  
• (102) CADGetLayerMark and CADSetLayerMark are new.
  
  
• (103) CADGetLayerKeys and CADSetLayerKeys are new.
  
  
• (104) Please note that the parameters (and logic) of CADGetUnit en CADSetUnit have changed.
  
  
• (105) Scope IDs have changed (!) Also, there is a new scope kCADScopeMarkedLayers.

  kCADScopeSelectedObjects , kCADScopeAllObjects , kCADScopeObjOnEditableLayers , kCADScopeMarkedLayers (= 5).

  Please note that a scope is comprised of objects of a single block.
  
  

• (106) The API now includes calls to create scopes: CADAddScope , CADRemoveScope .
  
  
• (107) CADToScope adds an object to a scope, CADFromScope removes an object from a scope.
  
  
• (108) CADInScope returns whether an object is in a scope.
  
  
• (109) CADScopeLogic applies logical operations on scopes. A target scope can be a source scope also.
  
  
• (110) CADCopyScope copies a scope.
  
  
• (111) ObjScope has been added as a parameter to CADOneObjID .
  
  
• (112) CADSelect is new (but still incomplete).
  
  
• (113) CADGotoPage is new.

  The 4D layout page can be set to 0, which is the default value. If so, CAD tries to determine the current 4D layout page itself by calling 4D’s Layout page function.

  Note.

  • The automatic value returned by 4D’s Layout page function is invalid if there is another (e.g. dialog) layout active in a window in front of the CAD area. You can solve redraw problems in this situation by calling CADGotoPage on every 4D layout page swap, passing the new 4D layout page as a parameter.
  • Calling CAD with the redraw mode set to "direct" while another 4D layout is the current layout in the same window (e.g. by MODIFY RECORD) may lead to spectacular effects. So, set the redraw mode to "later" before displaying another 4D layout (or don’t call CAD in this 4D layout). Calling CADGotoPage ( −1) is possible but strongly discouraged.
  • CADGotoPage also prevents error kCADCannotPaste .

  
  
  

• (114) There is a new call CADLastArea (to be used in TAppLastExtArea).
  
  
• (115) There are new calls for printing and printing-setup: CADGetPrintClip, CADSetPrintClip, CADGetPrintSpecs , CADSetPrintSpecs , CADPageSetup , CADPrint .

  CADPrint is still in an experimental state: a single page is printed, margins and bounds are incorrect, clipping is unimplemented, all objects are printed (whatever the scope or block), background-color should be set to white before printing, etc.
  
  

• (116) The "printing-preview" mode has been split in two modes: "printing-selection" and "printing-preview. Both are still unimplemented.
  
  
• (117) CADColorToIndex now tries to find the best-matching color-index if no color in CAD’s standard color palette matches the color-value precisely. There is a new parameter theColorIdenticalFlag that returns whether the found color-index matches the color-value precisely.

  Note. CAD’s standard color palette is merely a user-interface tool. CAD doesn’t store color-indices with objects but true 24-bit color-values.
  
  

• (118) New are CADDXFToColor and CADColorToDXF (useful when writing DXF files).

  Note. DXF-color 7 may change with the AutoCAD background color. In CAD DXF-color 7 is assumed to be black.
  
  

• (119) The parameter to explode all blocks of CADImportDXF has disappeared. New is an option to read color information embedded in DXF files.

  Note. The color of INSERT objects is assumed to be kCADColorUncolored .
  
  

• (120) New is CADBlend .
  
  
• (121) Warning. The parameter lists of CADAddCircle and CADAddCircleArc have changed. Rotation parameter is new.
  
  
• (122) If a string value passed to CADAddString or CADSetString contains a CR or LF character, an error code is returned.
  
  
• (123) Warning. CADGetFont and CADSetFont have changed. They now get/set both a Macintosh and a Windows font string.
  
  
• (124) New are CADGetColorsDim and CADSetColorsDim . No items can be selected in a dimmed color-palette area.
  
  
• (125) To do. To be implemented a new parameter to CADRemoveLayer .

  kCADLayerMustBeEmpty, kCADRemoveLayerObjects, kCADRemoveLayerObjectsAndEmptyBlocks.
  
  

• (126) To do. CADZoom does nothing before the first screen update (4D problem).
  
  
• (127) To do. Opening a drawing that uses fonts, uninstalled in the operating system, should (optionally) produce an alert.
  
  
• (128) To do. There are known bugs in continuous-zooming. Still to be fixed.
  
  
• (129) To do. The metric parameters of CAD methods that add and edit square and rectangle objects will change to: mid-coordinate, length, width (not for squares) and rotation.
  
  
• (130) To do. Calls to hide scrollbars, command palette, etc.