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How To Use The Comprehensive Form Properties In C++ VCL Apps

C++ Builder is the easiest and fastest C and C++ IDE for building simple or professional applications on the Windows, MacOS, iOS & Android operating systems. It is also easy for beginners to learn with its wide range of samples, tutorials, help files and LSP support for code. C++ Builder comes with Rapid Application Development Studio, also known as RAD Studio, and C++ Builder is one of the most professional IDE’s that work under RAD Studio. It is the oldest IDE (it began as Borland TurboC in 1990 and was later renamed Borland C++ Builder). Under the Embarcadero brand it comes with new versions, features, updates and support. RAD Studio’s C++ Builder version comes with the award-winning VCL framework for high-performance native Windows apps and the powerful FireMonkey (FMX) framework for cross-platform UIs. There is a free C++ Builder Community Edition for students, beginners and startups.

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Professional developers can use the Professional, Architect or Enterprise versions of C++ Builder. Please visit https://www.embarcadero.com/products/cbuilder.

Forms (TForm) in VCL Framework and Its Properties

TForm represents a standard application Form window. When we create forms in the Form designer at design time, they are implemented as descendants of TForm. Forms can represent the application’s main window, or dialog boxes, or MDI children. A form can contain other objects, such as TButton, TCheckBox, and TComboBox objects. All the Properties of Forms in FireMonkey frame work can be found here and Methods of Forms can be found here in official DocWiki.

How To Use The Comprehensive Form Properties In C++ VCL Apps - styled forms

Let’s give some examples of its properties. We can set or change properties (Caption, WindowsState, Color, TransparentColor, Visible, ShowHint, Tag, and more) of Forms on design with Object Inspector panel and on runtime, For example, we can set Caption or Hint of Forms on runtime. Here is an example to set some of the properties that we mostly used,

We can also get some information about our Form that we set on design time or they can be changed on run time because of Windows State, Border Kind, Alignments, FullScreen property, etc. Here is an example to get Caption, ClientWidth, ClientHeight, Width, Height of the form.

We can use Hide() and Show() methods to hide and show our forms. We can use SendToBack() and BringtoFront() methods, to send our form to the back or to bring to front. There are many methods and properties that we can use. All the Properties of Forms in FireMonkey frame work can be found here and Methods of Forms can be found here in official DocWiki.

Forms are one of the most important parts of our applications, so each property may change your application behavior. Some details about your forms may improve your quality of images, animations and speed of drawings.

How To Use The Comprehensive Form Properties In C++ VCL Apps - multi-device forms


Another great feature of Forms are Styles that works on all official UI elements of VCL Framework as a skin. You can easily apply skins to your forms and components on it. You can also create your own style with the Style Manager. We explained in our posts before that how you can apply styles on VCL applications and styles on FMX applications.


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About author

33+ years of coding with more than 30+ programming languages, mostly C++ on Windows, Android, Mac-OS, iOS, Linux and some other operating systems. Dr. Yilmaz Yoru was born in 1974, Eskisehir-Turkey. He graduated from the department of Mechanical Engineering of Eskisehir Osmangazi University in 1997. One year later he started to work in the same university as an assistant. He received his MSc and PhD degrees from the same department of the same university. He has married and he is a father of a son. Some of his interests are Programming, Thermodynamics, Fluid Mechanics and Artificial Intelligence. He also likes the graphical 2D & 3D design and high-end innovations.
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