The @ operator returns the address of a variable, or of a function, procedure, or method; that is, @ constructs a pointer to its operand. For more information about pointers, see Pointers and pointer types. The following rules apply to @.If X is a variable, @X returns the address of X. (Special rules apply when X is a procedural variable; see Procedural types in statements and expressions.) The type of @X is Pointer if the default {$T杴 compiler directive is in effect. In the {$T+} state, @X is of type ^T, where T is the type of X. If F is a routine (a function or procedure), @F returns F抯 entry point. The type of @F is always Pointer.When @ is applied to a method defined in a class, the method identifier must be qualified with the class name. For example,@TMyClass.DoSomethingpoints to the DoSomething method of TMyClass. For more information about classes and methods, see Classes and objects.]蛮清楚的阿
If F is a routine (a function or procedure), @F returns F抯 entry point. The type of @F is always Pointer.When @ is applied to a method defined in a class, the method identifier must be qualified with the class name. For example,@TMyClass.DoSomethingpoints to the DoSomething method of TMyClass. For more information about classes and methods, see Classes and objects.]蛮清楚的阿