TForm Class TForm代表一个标准的应用程序窗口。 在设计阶段,当你在窗体设计器内创建窗体时,他们作为窗体类的子节点被执行。窗体能代表应用程序的主窗口,或者对话框,或MDI的children。一个窗体能包含其它对象,如TButton, TCheckBox和TComboBox对象等。 ArrangeIcons:安排最小化MDI子窗体的图标; Cascade:排列MDI子窗体...
StrCat(SecondHalf, PChar(Edit1.Text) + HalfLen); Application.MessageBox(FirstHalf, 'First Half', MB_OK); Application.MessageBox(SecondHalf, 'Second Half', MB_OK); FreeMem(FirstHalf); FreeMem(SecondHalf); end; const S1: PChar = '???'; S2: PChar = '???'; var S: a...
Second, notice that the dots imply the conceptual nesting, or containment, of one namespace within another. The example above declares the unit MyUnit to be a member of the MyWidgets namespace, which itself is contained in the MyCompany namespace. Again, it should be noted that this contai...
dbuser=my_user #The DB password (in this example is read from an EnvVariable) dbpassword="XYZ${USERNAME}!$" #DB Hostname dbhostname="127.0.0.1" #user preferences user_preferences_path=${APPDATA} email_template="This is a ${mode} email template second template email line third template...
Exampleprocedure TForm1.Button1Click(Sender: TObject);var FirstHalf: PChar; SecondHalf: PChar; HalfLen: Integer;begin HalfLen := StrLen(PChar(Edit1.Text)) div 2; GetMem(FirstHalf,HalfLen+2); GetMem(SecondHalf,HalfLen+2); FirstHalf^ := Chr(0);...
Floating point is the internal format in which “real” numbers, like 0.0745 or 3.141592 are stored. Unlike fixed point representations, which are simply integers scaled by a fixed amount — an example is Delphi’s Currency type — they can represent very large and very tiny va...
The second argument points to the Java object for an instance method or to the Java class for a class method, rather like Self does in Delphi methods.After these initial arguments we have JNI representations of the arguments taken by the Java onActivityResult() method, which in this case ...
The second file is the product of compiling a form file and is only useful for the IDE during the build process. You can safely delete the win32 folder and its contents. The next time you run the application, all folders and files will be recreated. That's where the difference between ...
Since Delphi does not have a thread pool class implemented out of the box, in my second attempt I've tried using OmniThreadLibrary by Primoz Gabrijelcic. OTL is fantastic, has zillion ways to run a task in a background, a way to go if you want to have "fire-and-forget" approach to...
They are: A [1, 1] a [1, 2] a [1, 3] A [2, 1] a [2, 2] a [2, 3] A [3, 1] a [3, 2] a [3, 3] A [4, 1] a [4, 2] a [4, 3] Thus, you can think of a matrix, a [4, 2], that represents the elements of the fourth and second columns. Although ...