Teach Yourself Borland C++ in 14 Days - portal

Working with the Form Designer and the Menu Designer
The grid settings can be modified via the Preferences page of the Environment Options dialog
box. (I’ll discuss the Environment Options in detail on Day 10, “More on Projects.”) Here
you can change the grid size or turn off the Snap to Grid feature. You can also turn the grid
display on or off. When the grid display is off, the grid is still active (assuming that Snap to
Grid is on), but the dots marking grid points are not drawn on the form.
Selecting Components
After you place a component on a form, you often have to select the component in order to
modify it in some way. You may have to select a component in order to perform one of the
following actions:
■ Move the component
■ Change the component’s properties
■ Align the component
■ Size the component
■ Cut or copy the component
■ Order the component (bring to front or move to back)
■ Delete the component
Selecting Individual Components
To select a single component, just click on it. When you select the component, eight black
sizing handles appear around the component to indicate that it is selected. (I’ll discuss the
sizing handles in a moment.) Figure 7.1 shows a form with a button component selected.
As soon as you select a component, the Object Inspector changes to show the properties and
events for the control selected. To deselect a control, click on the form’s background or
Shift+click on the control. (Shift+click is described in the next section.)
TIP
Each component has a default event handler associated with it. When
you double-click a component on a form, the Code Editor displays the
default event handler for that component, ready for you to type code.
In most cases, the default event handler is the OnClick handler. Exactly
what happens when the component is double-clicked depends on how
the component is designed. For example, in the case of the Image
component, double-clicking will display the Picture Editor dialog box.
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