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The VCL – or Visual Component Library – is the traditional Delphi framework that is there since Delphi 1 and can only be used to create Windows applications. These are two user interface frameworks that you can use with Delphi. You select “File”, “New” and then you have a choice of creating either a new “VCL Forms Application – Delphi” or “Multi-Device Application – Delphi”. Probably the very first thing to do after starting Delphi is to create a new project. Let’s have a closer look into what files and folders the IDE generates.
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When you select options to generate a new project, the IDE automatically generates a number of files for you. The project name later becomes the name of the resulting executable binary file. Delphi IDE organizes all necessary files to generate an executable into a project.
Delphi (ide) code#
Typically Delphi compiler needs more than one source code file to generate an executable.
Delphi (ide) mac os#
Delphi Community Edition includes compilers that generate code for iOS, Android, Mac OS and Windows. There are different Delphi compilers that generate executables for different operating systems. An “Integrated Development Environment” (IDE) combines code editor, compiler and debugger into one application. As the name implies it is used to find “bugs” or “errors” in compiled programs. Another very important program is a debugger. Typically a compiler is available in the form of a command line tool that takes as arguments the location of source code files with programs written by a programmer and generates executable files. Probably the most important developer tool that programmers use is the compiler. Today we will start creating a “calculator” application that we will use as a vehicle to learn the basics of programming in Delphi. The best way to learn something is to start using it to build something useful, but not too complicated. The current directives settings are inserted in a horizontal line at the top of your file, along with other current settings, such as compiler warnings (the settings for the $WARN directive).In the first post we covered the installation of Delphi Community Edition. If you are working in the Code Editor and want a quick way to see the compiler directives that are in effect, press Ctrl+O+O.
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If you change a compiler switch and compile, all units for which you have source code are recompiled with the new settings. Any changes you make to the settings on the Compiling page affect all units whenever their source code is recompiled in subsequent compilations of that project. You can set many of the compiler directives on the Project > Options > Delphi Compiler > Compiling dialog box. When using the command-line compiler, you can specify compiler directives on the command line for example, You can also change the default directives using the -$ directive switch with the command-line compiler, dcc32, and for the IDE, bds.exe. Note that comments beginning with the double-slash // cannot be used for compiler directives. You can include comments after the directive and any necessary parameters.Ĭompiler directives can be placed wherever comments are allowed. The compiler directive starts with a $ (dollar-sign) as the first character after the opening comment delimiter, immediately followed by a name (one or more letters) that designates the particular directive. Go Up to Delphi Compiler Directives (List) IndexĮach Delphi compiler directive is classified as one of the following:Ī compiler directive is a comment with a special syntax.