AutoCAD 2004 basic operations

AutoCAD 2004 provides us with a variety of drawing methods, you can use the mouse to click the button on the toolbar, you can also select the corresponding command from the menu bar, you can also enter commands in the command window to draw.

I. Drawing Operations

Selecting a command from the drop-down menu and clicking the corresponding button in the toolbar will achieve the same purpose. After selecting a menu command or clicking the tool button, The corresponding command will appear on the command line. Of course, you can also use the keyboard to enter commands as you would in the DOS version.

Another way to enter commands is to use hotkeys, which are special keys that open and activate menu options. After the menu bar and menu command, there is an underlined letter. Press the “Alt”” button and then press the letter after the menu item to open the corresponding menu. Then, press the letter after the command to execute the corresponding command. No need to use a mouse.

In addition, many commands have abbreviations, and entering one or two letters represents the full command name. After familiar with AutoCAD, you will find these shortcuts useful. The abbreviated files of the commands are placed in the SUPPORT folder under the AutoCAD 2004 installation directory. The file name is “acad.pgp”, you can find the abbreviation of the command here. .

In the drawing window, the AutoCAD cursor is usually a "ten" word line, and when the cursor moves out of the drawing area, it becomes an arrow. Regardless of whether the mouse is in the form of "10" or "arrow", when a mouse operation is performed, the corresponding command or action is executed.

When drawing with AutoCAD, sometimes you enter the wrong command or option to cancel the currently executing command. In AutoCAD, you can use the “ESC” key to cancel the current command. Sometimes you need to repeat an AutoCAD command to complete a design task. Press the Enter key, the space bar, or right-click in the drawing area, and select the “Repeat ××” command in the shortcut menu. AutoCAD will repeat the last command you used, as shown in the figure. 1 is shown.

To repeat the command, you can also right-click on the command line window shortcut menu of & ldquo; recently used command & rdquo; show your most recently used command submenu (up to Show six), you can choose the command you need, as shown in Figure 2.

in the command line, & ldquo; MULTIPLE & rdquo; press Enter, and then according to the command line prompt, enter the required command repeatedly executed. AutoCAD will repeat the commands you entered until you press the “ESC” key.

In AutoCAD, some commands that need to be executed in a dialog can also be forced to execute on the command line. You only need to add a “-” (minus sign) before the command.

The command line window is a window that can be docked or floated. AutoCAD displays the commands and options you enter here and gives you a message. By default, only the previous two lines of command prompts are displayed in the command line window, and a few lines of text can be displayed by dragging the border of the window up. The command line window displays the command status and command history of the graphic you are currently editing. If you have multiple graphics open, the state history displayed by the command line window will also switch accordingly when you switch between graphics.

Second, save and exit

To save the graphic file after creating or editing the graphic, you can click “Save“Standard> ; button. Another way to save the graphic file is to type ““Qsave” in the command line window and press Enter. Then the “Save As” dialog box will pop up, enter the path and name of the file, single Click the "Save" button to end, as shown in Figure 3.

The third method to save a graphic file: Select & ldquo; File & rdquo; menu & ldquo; Save & rdquo; commands, operating the same way as with other Windows applications, there is no longer introduced.

If you click the <quo;Tools  drop-down list in the "Save As" dialog box and select the "Options" command, the "Save As" dialog box will pop up. There are two tabs in the dialog box, “DWG Options” and “DXF Options”, as shown in Figure 4.

DWG tab means that if you save the graphic as R13 or later version of the file format, and include custom graphic objects from other applications, you can select the & ldquo; save custom objects proxy image ” checkbox. This option sets the value of the system variable “PROXYGRAPHICS”. In the "Index Type" list, you can determine whether AutoCAD creates a layer or spatial index when saving a drawing. In the "Save As" list, you can specify the default format for saving graphic files. If you change the specified value, the graphic will be saved in the new file format when you perform the save operation in the future.

The DXF tab indicates the format in which the swap file is set. In the "Format" combo box, you can specify the format of the DXF file you want to create. The “Select Object> checkbox determines whether the DXF file contains the selected object or the entire graphic. The “Save Micro Preview” image checkbox determines whether the preview image is displayed in the “Preview” area of ​​the “Select File” dialog box. This option can also be controlled by setting the system variable “RASTERRREVIEW”. The saved precision can be set in the “Decimal digits of precision” box, which can only range from 0 to 16, as shown in Figure 5.

AutoCAD 2004 common method of exit in three ways: one is to open the & ldquo; File & rdquo; menu, select & ldquo; exit & rdquo; command; one is typed on the command line & ldquo; Exit & rdquo; or & ldquo ;Quit”; The other is to click the “Close” button to the right of the title bar.