What is a Delphi form?
Form. Form objects are the basic building blocks of a Delphi application, the actual windows with which a user interacts when they run the application. Forms have their own properties, events, and methods with which you can control their appearance and behavior.
How do I show another form in Delphi?
Start a new project, and add one additional form (Delphi IDE Main menu: File -> New -> Form). This new form will have a ‘Form2’ name. Next add a TButton (Name: ‘Button1’) to the main form (Form1), double-click the new button and enter the following code: procedure TForm1.
How do I change the main form in Delphi?
It is not possible to change the Application. MainForm once it has been assigned. However, you do not need to, either. The simpliest solution to this issue would be to create a blank hidden TForm to act as the real Application.
How do I add a form to Delphi?
To add a form to your project, select either File > New > VCL Form or File > New > Multi-Device Form, according to the type of application you are creating.
How do I open a new unit in Delphi?
Do either of the following choices:
- File > New > Delphi or C++Builder Unit .
- File > New > Other to display the New Items dialog box, select Delphi or C++Builder Projects > Delphi or C++Builder Files > Unit , and choose OK. The IDE creates a new unit file and opens it in the Code Editor.
Can’t create output EXE file Delphi?
F2039 Could not create output file ‘%s’ (Delphi) Most likely causes are a nonexistent directory or a write protected file or disk. Reasons why an output file could not be produced: You don’t have the required write permission for the directory. Check the access privileges of your application.
Which form opens first Delphi?
Look under Projects|Options|Forms and it should list all the forms there and auto-create order. You should be able to set the login screen first there.
What is a class in Delphi?
Classes in Delphi A Class consists of fields, methods and properties which defines character and behavior of an object. Instances of a Class are called as Objects and fields, methods are called as class members.
How do you change units in Delphi?
To switch between viewing the current form and its unit source code, use any of the following methods: Press F12. Choose View|Toggle Form/Unit. In the Project Manager, double-click in the Unit column of the unit you want to display its source code, or the Form column to display the form image.
How do I fix error f2039 Delphi?
This is what I have done to isolate the problem.
- Started with a failing application (will not compile a 2ed time)
- Remove all external units used.
- Remove al references to those units.
- Remove all references in the ‘Uses’ clause.
- Comment code until it compiles.
What does can’t create output file mean?
If the installer is already running, and you attempt to run the installer again while the first instance of the installer is running, the “Can’t create output file” error will appear. Check the Taskbar or the Windows Task Manager to ensure that the installer isn’t already running.
How to start Delphi application with the hidden main?
It shows the main form when the application starts. How can I start Delphi application with the hidden main form (or on non-visual mode at all)? You can also set it in the MainForm’s OnCreate event. The requirement is to set ShowMainForm before Application.Run () is called.
How to create a new form in Delphi 2010?
1. Run Delphi 2010. Creating the project as VCL Forms Application 2. Developing of main form Form1 3. Adding the new form to project 4. Setting up the new form view 5. Connecting Form2 into module Form1 6. Calling the secondary form from the main form 7. Programming the events in form2
How to create a VCL form in Delphi?
Creating the project as VCL Forms Application A detailed example creating a new project in Delphi 2010 is described here . Save the project and the main form under name “MainForm” in some folder. Automatically we have the name of main form “Form1” (property Name in Object Inspector).