Teach Yourself Borland C++ in 14 Days - portal

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380 Day 10 NOTE C++Builder comes with a utility that allows you to search for text across source files. The utility is called grep (for Global Regular Expression Print) and can be found in the CBuilder\Bin directory. This command-line program is a powerful search utility. Unfortunately C++Builder does not integrate grep into the IDE as Borland C++ does. Still, you can run grep from the command line or search various online sources for a host of third-party Windows-based grep tools. Getting Help One of the most useful features of the Code Editor is its integration with the C++Builder help system. Just place the editor cursor over a C++ keyword, a VCL property or method, or any other C++Builder-specific text and press F1. If a help topic for the text under the cursor exists in the C++Builder help files, WinHelp will run with the appropriate page showing. If no help topic exists for the selected text, an error message will be displayed. This feature is extremely useful when you can’t remember how to use a particular aspect of C++Builder, C++, or VCL. Help, as they say, is just a keystroke away. Specialized Editor Features The C++Builder Code Editor has a few features that are extremely useful when you are writing a lot of code. They are explained in the following sections. Using Bookmarks You can set bookmarks in your code to temporarily mark your place in a source file. For example, you often have to temporarily leave a block of code you are working on to review previously written code or to copy code from another location. By dropping a bookmark at that point in your code before running off to do your other work, you can return to that section of code with a simple keystroke. You can have up to 10 bookmarks set at any one time. To set a bookmark at a particular location, press Ctrl+Shift and the number of the bookmark to set. For example, to set bookmark 0 (the first bookmark), place the editor cursor at the location you want to mark and then press Ctrl+Shift+0. When you set a bookmark, an icon is placed in the Code Editor gutter to indicate that a bookmark exists on that line. The icon shows the number of the bookmark. Figure 10.13 shows the Code Editor with a bookmark dropped on a line.
Figure 10.13. The Code Editor with a bookmark set. NOTE More on Projects To return to the bookmark, press Ctrl plus the number of the bookmark to which you want to return. Using the same example, you would type Ctrl+0 to go back to the bookmark. To clear a bookmark, place the editor cursor anywhere on the line containing the bookmark and again press Ctrl+Shift+0. Bookmarks can be set for each file you have open in the Code Editor. For instance, you can have bookmark 0 set in one source file and another bookmark 0 set in another source file. This means that bookmarks cannot be found across source files. If you set bookmark 0 in Unit1.cpp, you cannot press Ctrl+0 from Unit2.cpp and expect to be taken to the bookmark in Unit1.cpp. To illustrate the use of bookmarks, do the following: 1. Open any source file in the Code Editor. 2. Scroll almost to the bottom of the file and click on a line of code. 3. Press Ctrl+Shift+0 to set a bookmark. The bookmark icon shows in the Code Editor gutter. 4. Press Ctrl+Home to move to the top of the source file. 5. Now press Ctrl+0 to jump back to the bookmark. The Code Editor changes to show the line of code where the bookmark was set, and the cursor is placed exactly where it was when you set the bookmark. 6. Type Ctrl+Shift+0 again to clear the bookmark. The bookmark is cleared, and the bookmark icon disappears from the Code Editor gutter. Bookmarks are temporary. When you close the source file and reopen it, the bookmark is not preserved. 381 10
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At a Glance At A Glance WEEK 1 In W
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Day 1 Getting Your Feet Wet Week Ge
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Getting Your Feet Wet are divided i
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Getting Your Feet Wet but you need
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Getting Your Feet Wet An object, li
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Day 8 VCL Components VCL Components
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VCL Components C++Builder displays
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Day 9 Creating Applications in C++B
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Creating Applications in C++Builder
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C++Builder Extensions to C++ Day 14
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Day 10 Answers to Quiz Questions 1.
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Symbols & (ampersands), 246 © (cop
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C C (programming language), 132 C c
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File Save, 309-312 Find/Replace, 31
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Add to Your Sams Library Today with
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Overview Introduction Introduction
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Introduction VCL Explored .........
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