QCad User Reference Manual
|  |  | # 5 QCad's User Interface When you launch QCad, it comes up with the main application window of the graphical user interface. This window hosts the drawing documents. ## Main Application Window QCad comes with a graphical user interface (GUI) which offers most of the common features you might already know from other applications. In this chapter we take a closer look at the individual components of the QCad main application window (Figure 8). Figure 8: Main application window of QCad. ## Menu and CAD Toolbar Most functions of QCad can be accessed from its menu. For CAD related functions it might be more convenient to use the CAD Toolbar at the left. This Toolbar always shows the functions which currently make most sense to use. For example if you are about to set the startpoint of a line it shows the snapping functions which allow you to set the startpoint to an existing endpoint, a grid point or to use another positioning mode. ## Layer- and Block List To the right of the main window of QCad you can find the Layer- and the Block List. They show the layers and blocks of the currently active graphic document. You can switch the Layer- and Block Lists on and off using the menu `View - Views - Layer List` and `View - Views - Block List` . ## Status Bar The Status Bar at the bottom shows various information about the current state of QCad. At the left, the co-ordinate Widget displays the absolute and relative position of the mouse cursor as cartesian and polar co-ordinates. The Mouse Widget shows information about the current function of the left and right mouse buttons. The Selection Widget shows the number of entities that are currently selected. The Status Bar can be enabled / disabled using the menu `View - Views - Statusbar` . ## Command Widget Just above the status bar you can find the command line of QCad. It is used to type in commands and to notify you about warnings and errors. The command line can be enabled / disabled using the menu `View - Views - Command Line` . ## Option Toolbar The Option Toolbar is empty in Figure 8. Depending on the currently active tool, it shows the options that are available for the tool. If you prefer to change options and tool settings over the command line, you might want to hide this toolbar using the menu `View - Views - Option Toolbar` . ## Executing Commands Everything in QCad is dependent on a command being issued first. There are different ways to execute QCad commands: select a corresponding tool icon on one of the toolbars choose a menu item from one of the pull-down menus type the command at the command prompt Please note that the menus and toolbars feature the most common commands. Some actions require further input after launching. There are again three ways how those inputs can be requested by QCad: Dialog Windows. E.g. the text construction tool shows a dialog window where the user can choose the font and type in the string for the text entity. Option Toolbar. E.g. the dialog for drawing parallels requires the input of the distance from the original entity. It displays a text input box in the second toolbar at the top where the user can type the distance (see Figure 9). Command prompt. E.g. when drawing a sequence of lines you can close the sequence by typing 'close' at the command prompt. Figure 9: An optional toolbar may be shown for some tools. ## Modes QCad operates in two modes: the command mode and the normal mode . In the command mode, it accepts commands over the command line. In normal mode all keyboard input goes to the application interface. ### Command Mode The command mode is indicated by a blue label at the left bottom corner of the command widget and a blinking cursor in the command line. In this mode, all keyboard input that is printable, goes into the command line. Use this mode to enter commands or co-ordinates. E.g. you can enter `line` to launch the line tool. If you press the Z key followed by the A key, the letters 'za' appear in the command line as opposed to triggering the auto zoom command. ### Normal Mode In this mode, QCad behaves as any other standard application. All keyboard input is interpreted as hotkeys if specified or has no effect at all. If you press the `A` key in this mode, QCad triggers the auto zoom command.
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