44 cases of ATUOCAD experience skills

1. In AutoCAD, sometimes a cross point mark is generated at the point where the mouse clicks. With the BLIPMODE command, enter OFF at the prompt line to eliminate it.
2. Some users will find that the dialog box in the command will become a prompt line when using AutoCAD. For example, the print command, which is controlled by the system variable CMDDIA, just turn it off.
3. Whether the ellipse generated by the ellipse command is a polyline or an ellipse is determined by the system variable PELLIPSE. When it is 1, the ellipse generated is PLINE.
4. The CMDECHO variable determines whether the command line echo is generated, and it should be set to 0 during program execution.
5. DIMSCALE determines the scale of the dimension. The value is an integer. The default is 1. When the graphic has a certain scale, it should be changed to the scale.
6. BREAK The entity is cut off at two points. If you select "@" to answer the second point, you can separate the entity by the first point.
7. The higher version of CAD provides geometric tolerance labels, but the roundness and concentricity are not round enough. In fact, the common symbol definitions in AutoCAD are in the gdt.shp file in the SUPPORT subdirectory of the AutoCAD installation directory. Among them, the characters No. 2 and No. 4 define the shape of the circle. The arc of the circle is actually 127 Â°, but it is not very easy to correct it (such as 90 Â° is not good).
8. Hollow Chinese character glyphs such as using the BONUS function in AutoCAD R14 (be sure to install AutoCAD completely, or select it during custom installation), there is a TXTEXP command, which can blow text into lines, which is very useful for making three-dimensional characters.
9. There is an ARCTEXT command in BONUS of AutoCAD R14, which can realize the output of arc text. The method is to select the arc first, then enter the text content, and press OK.
10. There is also a useful command in BONUS, namely MPEDIT, which is used to modify multiple lines into a polyline, and then change its line width.
11. The image command replaces the BMPIN, PCXIN and other commands in R13 in R14. It embeds the bitmap in the file for display only. If it is exploded, it becomes an empty frame. How to reproduce the commands such as PCXIN? Please copy the RASTERIN.EXE in the R13 installation directory into R14, load it with appload, and then you can import the bitmap (can be edited and exploded).
12. The BREAK command is used to interrupt the entity. The user can also disconnect the entity at one point. The usage is to enter "@" after the first point of selection. When one line is a dot-dash line and the other line is a solid line.
13. A large number of command abbreviations are provided in AutoCAD R14, and many commands without abbreviations in R13 also have abbreviations, such as: A: ARC, B: Bmake, C: Circle, Z: zoo. Click fast (especially at the speed of losing 5 characters in 1s). AutoCAD R14 has greatly expanded the simplified commands, not only the commands simplified by the first letter (not listed here), but also the commands simplified by the first two letters, commonly used such as: array, copy, dist, donut, dtext, Filter, mirror, pline, rotate, trim, scale, snap, style, units, etc., increase the speed of entering commands with the keyboard, which is even more powerful for friends who are familiar with the keyboard.
14. The command abbreviation of AutoCAD R14 can also be used in R13 by copying ACAD.pgp in the Support subdirectory of AutoCAD R14 to the Support subdirectory of AutoCAD R13.
15. The ACAD.pgp file in AutoCAD is very important. It records the content of command abbreviations. Users can customize them in the following format: <command abbreviation> * command name. You can also define system commands. AutoCAD R14 provides sh commands, which can execute DOS commands, but they do not work much under Windows.
16. AutoCAD R14 uses NOTEPAD, EDIT, DIR, DEL and other system commands. The author believes that NOTEPAD is more useful for custom CAD, but when used, it will find that the screen flashes (into DOS) and returns, which is very unpleasant. Let's compile a small program named note.lsp:
(defun c: notepad ()
(startapp "notepad")
)
First delete the NOTEPAD command definition line in ACAD.pgp, and then re-enter CAD, then load this program with the command: (load "note"), the next time the NOTEPAD command will have better results, it is best to load (load "note") added to ACADR14.lsp in the Support subdirectory.
17. In AutoCAD R14, the printed line width can be set by color, so that the lines with different line types and different line widths in mechanical drawings can be placed in different layers. The line type and color are defined in the layer, and set in the print settings The relationship between the alignment and color is good.
18. ACAD.dwt is the default template in Support of AutoCAD R14. It is necessary to process it well, define the commonly used layers, blocks, and label types, and add a standard frame to save a lot of repetitive work.
19. There are many external Lisp command files in AutoCAD, you can directly observe them. If you learn to develop Lisp applications, please note: R14 is the AUTOCAD of the last version of the Lisp file. The content of the Lisp file is encrypted in CAD2000 (the author is studying decryption program).
20. There are many secondary development tools for AutoCAD, Lisp already exists, R11 provides ADS (Acad Develop system), R12 provides ADS support for real-mode C compilers (such as BC, MS C), and R13 provides ARX (Acad RunTIme eXtend), R14 provides VB AutomaTIon, this AutomaTIon makes it possible for VB to write CAD programs, people who desire CAD programming have a best choice, do not have to learn ADS, ARX, Object ARX, and AutoLisp, join AutoCAD programming together world.
twenty one. The user-defined Lisp file must be automatically loaded into AutoCAD, so you need to add the loading statement of the user Lisp file to acadr14.lsp, acadr14.lsp (the earlier version is acad.lsp), just like DOS's Autoexec.bat, must To make good use of it, if you define a function named S :: STARTUP () to run it automatically (how to add an enable screen to CAD, you can use STARTUP plus startapp function, or you can add a login password).
twenty two. Insert the graphics in AutoCAD into WORD, and sometimes you will find that the circle becomes a regular polygon. Use the VIEWRES command to set it larger to change the quality of the graphics.
twenty three. How about 30H11 () labeling? Please enter "%% c30 {H11 (} {\ H0.7x; \ S + 0.1 ^ -0.2;})" in the text content. Too much trouble, just write a program to simplify the operation.
twenty four. Files in AutoCAD can be inserted into other files as blocks, but too many blocks make the files too large. Use PURGE to clear them. Clear one layer at a time. You must use it a few times!
25. The help file of AutoCAD R14 is very rich. It is composed of many "books". It is opened layer by layer. It is very useful to see more of them. It includes all aspects of CAD. It is more complete than any CAD. Do you want you? 'S help to join it, please modify acad.cnt and add your own help link.
26. In CAD, the .ahp CAD help file can be edited according to the regulations. Use ahp2hlp.exe to convert it to .hpj file and .rtf file under R14, and then use the HelpWorkshop tool (available in VC5) to open its project. , Compiled into a .hlp file.
27. In AutoCAD, there are some DOS files under DOS that are still used in R14. Slidelib.exe can be used as a slide library, and mc.exe can be used to compile the menu.
28. After completing the parts drawing and assembling, you can insert the part block and weld it, and then use the group to group and assemble. At this time, use the ddselect command to control the state of the group selection. When the group selection is canceled, the members in the group can be deleted , Cut, modify, and then open the group status when you want to move the part.
29. The menu source file in AutoCAD is a .mnu file. Modify it to add your own commands to the menu, and then use the menu command to load. You can participate in AutoCAD to help understand the menu file format. It is relatively simple to add your own commands in the icon toolbar. You can right-click on the toolbar. In the toolbar dialog, click the new button. After entering the toolbar, a new toolbar is generated. Then select the Customize button. Select custom and it will be empty. Drag the button into the toolbar and press the right button on the empty button to define your own button icon and command
30. AutoCAD's status line can also be customized. You can access it in DIESEL language. The easiest way is to use the modemacro command, and then enter $ (getvar, clayer). In the future, the current layer name will be displayed on the status line. Customization can be described as permeable!
31. The graphics format of AutoCAD is .dwg, and can also be exported as .bmp and .wmf or .eps, .dxf, .3ds. If you use the render command, it can be saved as .pcx, .tga, .TIf format, and AutoCAD can also directly file To save in these formats, install a printer named "Raster file export" for the system and use it to print to a file. ACAD2000 can also save the file in JPG format.
32. When rendering, there is no close button for render. The user can use: (arxunload "render"), because it is a function of ARX file extension.
33. The dimzin system variable is better to be set to 8. At this time, the default value in the dimensioning will not bring a few trailing zeros, and the user directly accepts the default value is very convenient and fast.
34. If the shortcut key fails, such as ^ o loses its function and changes to the orthogonal mode, please use the menu to reinstall the .mnu menu source file of the currently used menu.
35. Use Word97 to edit text in a multi-line text (mtext) command. Mtext multi-line text editor is a new function in AutoCAD R14. It provides the interface and working mode of Windows word processing software. It can even use the powerful functions of Word97 to edit text. This function can be implemented as follows: Open the "Tools" menu and select the "Preferences" command. After the "Preferences" dialog box pops up, open "Files / Text Editor, Dictionary, and Font File Name / Text Editor Application / Internal", double-click "Internal", and "Select a file" appears "Dialog box, then find the" Winword.exe "application file, click the" Open "button, and finally click" OK "to return. After completing the above settings, when users use the mtext command again, the system will automatically call the familiar Word97 application to add text to AutoCAD.
36. Use tool buttons to customize. There are many lsp files in AutoCAD that can provide us with very practical commands, such as chtext.lsp is a very good text modification command, especially suitable for the modification of a large number of text, but you must first load the lsp file before using such a command . Generally, you can select the "Load Application ..." option in the "Tools" menu, and then use the dialog box to open the Chtext.lsp file under AutoCAD R14 / Support, and then click the "Load" button, or you can also directly on the command line Type "(load" chtext ")" to achieve the purpose of loading, which is always a bit tedious. Let's solve this problem by customizing the tool button. Right-click any tool button, a "Toolbars" dialog box pops up, click the "Customize ..." button, and select "Custom" in "Categories:". The empty space will appear. Drag the button to the target position in the toolbar, click the "Close" button to return, then right-click the empty button, the "Button Properties" dialog box appears, name the command button in the "Name:" column, and you can click in the "Help:" column Write or not write content, then type "(load" chtext ") cht" in "Macro:", as for "Button Icon", the user can select the icon provided by the system, or click "Edit ..." Draw or directly call the existing bmp file, finally click the "Apply" button and close the dialog box in turn to return. This completes your own work button. Since "cht" is added at the back (note: there must be a space in front), you can directly select the target file to be edited by pressing the tool button.
37. The "Stretch" command is also a common command, but after entering the command, the system always prompts "select object to stretch by crossing_window or
crossing_polygon ... "requires you to enter a" C "before using the mouse to select the target. In order to simplify the operation, the user only needs to make some minor modifications to the tool buttons provided by the system. Right-click any tool button to pop up "Toolbars" dialog box, and then right-click the "stretch" tool button to pop up the "Button Proporties" dialog box, type the space and "C" after "^ c ^ c_stretch" in the "Macro:" box. After you click on the processing again The tool button can directly select the target to operate.
38. AutoCAD R14 users usually save in the default format given by the system. The disadvantage of this format is that the file takes up a lot of space and cannot be opened with lower version applications (such as AutoCAD R12, AutoCAD R13). To avoid disk space Waste, you can select "AutoCAD R12 / LT2 Drawing" format to save in the "Save Drawing As" dialog box "Save Type". For example: the same dwg file is saved in two ways, and their sizes are 87KB and 58KB respectively. It can be seen that the difference is considerable. And the latter file can be opened in the R12, R13 version of the application. This method is especially practical for users with lower configuration.
39. Sometimes when opening a dwg file, the system pops up an "AutoCAD Message" dialog box prompting "Drawing file is not valid", telling the user that the file cannot be opened. In this case, you can first exit the open operation, then open the "File" menu, select the "Drawing Utilities / Recover" command, or directly enter "recover" on the command line with the keyboard, and then enter the "Select File" dialog box After confirming the recovered files, the system will start to recover the files.
40. Chinese menu. Copy the acad.mnu file in the support directory to chinese.mnu. Open chinese.mnu with a writing pad. If you look closely, you will find that there are many items like "*** POP", each item defines a list of drop-down menus. Change the English command name in quotation marks to Chinese, save and exit. Then enter the "menu" command in R14, load the Chinese.mnu menu file, and the drop-down menu becomes Chinese. You can also load the acad.mnu file to restore the menu.
41. The default "command cancel" key of R14 is the "ESC" key. What if you are used to the "Ctrl + C" of R12? Click the menu Tools \ preferences \ compatibility \ priority for accelerator keys \ autoCAD classic, and then you can use "Ctrl + C" to cancel the command, and the "ESC" key is still valid.
42. When the trim command prompts to select the graphics to be cut, the commonly used window and crossing selection methods are not supported. When you want to cut multiple line segments, you need to select multiple times to complete. At this time you can use the fence selection method. When the trim command prompts you to select the graphic to be cut, enter "f", and then draw a dotted line on the screen, and press Enter. At this time, all the graphics touched by the dotted line are cut off.
43. Click the "Make objects' layer current" button on the "Object Propertys" toolbar, and then select any graphic on the layer you want to go in the drawing area, the current layer will immediately change to the layer where the selected graphic is located.
44. When using R14 to open the R12 file, even if the Chinese font file is correctly selected, Chinese characters will still be garbled because the code page used by R14 and R12 is different. You can download the code page conversion tool wnewcp from AutoDesk's homepage. After running wnewcp, first select the "R11 / R12" check box, then click the "Browse" button, select the file or directory to be converted, and then select the new code page, either ANSI936 or GB2312, click "Start Conversion" The conversion starts. After conversion, Chinese characters can be displayed correctly in R14.

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