Teach Yourself Borland C++ in 14 Days - portal

6
214 Day 6
Q&A
Q The C++Builder toolbar doesn’t have buttons for the features I use most often.
Can I change the toolbar?
A Absolutely. The toolbar is fully customizable. You can add or remove buttons as
you see fit.
Q I placed multiple Label components on a form and then attempted to select
them all by dragging. Instead I just got another big Label component. What
have I done wrong?
A You forgot to turn off the multiple placement option. After placing multiple
components on the form, you need to click the arrow button on the Component
Palette to turn off the multiple placement option.
Q I have several components on a panel. I’m trying to select the components by
dragging, but I keep moving the panel instead. What must I do to select a
group of components on a panel?
A Either use Shift+click to select each component or hold down the Ctrl key and drag
a bounding rectangle around the components.
Q Can I write, compile, and run a simple C++ program without a project?
A No. In order to create an executable file, you need a project. The project makes
sure that all needed library routines are linked to the final executable.
Q What are library files for?
A There is a common set of routines used in C++ programs. The string manipulation
functions I discussed on Day 1, “Getting Your Feet Wet,” are examples of such
routines. If your program calls a C++ function, that function must be included in
the executable file for your program. These functions are contained in a library file
(.LIB). The linker makes a copy of the function found in the library file and places
it in your executable. Any VCL methods your program calls are handled in the
same way.
Q Why does C++Builder use the term unit to refer to a source file?
A C++Builder uses the term unit because C++Builder was created from Borland’s
Delphi. Delphi is based on Pascal, and unit is a Pascal term for a source file.
Q What do I need to do in order for my application to be an MDI application?
A Just be sure that the main form has a FormStyle of fsMDIForm and that any MDI
child forms have a FormStyle of fsMDIChild.