![]() ![]() ![]() The main unit is paired with a visually designed custom form that owns a few associated controls and components. Otherwise, the original program instance is sent a message to wake up, bringing it into the foregroundīelow is a listing of the main unit source code for the example program. If it's running as the original instance, the application is initialized, scaled to the user's dpi, and the main form is created and run. In this program, the first statement of the main block determines if the program is already running an original instance. Note the period "." at the end in the last line. The asterisk wildcard tells the compiler to look for a resource file name matching the program name.Įvery Pascal program is required to end with a main block that is surrounded by "begin" and "end". This file can contain your main icon, version information, and other resources. These can be either unit source code files or precompiled units, and are similar to the "using" statements available in C#.Ī resource file can be linked to your program. This clause instructs the compiler which unit files to use during compilation and linking. Next, we have the option to include a uses clause. In this case, we are using Delphi language semantics. Optionally, a mode directive can be used once in any source file to tell the compiler to make use of certain language semantics. The statement declares that the project should be built as a binary program of some arbitrary name. ![]() SqlInstance := UniqueInstance(SqlPort + 1) Īpplication.CreateForm(TSqlForm, SqlForm) Īll Pascal programs start with a program statement. After the code listing is an explanation of the purpose of each line of Pascal code. Unit files typically contain the main logic of your program and may contain visual resources such as custom designed forms and controls.īelow is the program source code for the SQL monitoring example program. The program source contains a main statement block that executes when the program begins, which then hands off code execution to routines in other units used by the program. Typically, Pascal source code is split into two or more files: a program source, and one or more unit sources. ![]()
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