There are a couple of things that I am having a difficult time understanding with regards to developing custom components in JSF. For the purposes of these questions, you can assume that all of the custom controls are using valuebindings/expressions (not literal bindings). Although I'll gladly upvote those who give good explanations on...
I have a custom component where I have implemented INotifyPropertyChanged and IBindableComponent. However, when I try to databind a property, the designer adds this line: this.component11.TestString = global::WindowsFormsApplication2.Properties.Settings.Default.Setting; instead of creating a binding as it does with a TextBox: this.t...
Hello, I have a solution with many projects. One project contain few custom components. One of these components is used to display a title on an image. We can change the color of the background and many other things. The problem is IF I decide to change the default color of the background of the component or change the position of the ...
What is the correct way to implement the "find as you type" behavior on a TComboBox descendant component whose style is csOwnerDrawFixed? ...
I'm pretty new to JSF and the many many related technologies out there. I'm trying to make a website that has a header which includes a logo, navigation links, and a login box, such that this header can easily be included in all of the site's pages unless the user logs in, in which case a different header will appear. Something similar ...
I have written a new custom component derived from TLabel. The component adds some custom drawing to component, but nothing else. When component is painted, everything works fine. But when the redraw is needed (like dragging another window over the component), "label part" works fine but my custom drawing is not properly updated. I'm bas...
I have written a custom control, that has several sub panels. I want these sub panels to accept any additional controls dropped on them at design time. Unfortunately any control that gets dropped at design time ends up on my custom control, not on the panels. This shows in particular if I try to drop a label: The label's blue dots are s...
I have a visual component that I built from a TFrame (but then registered to the palette, etc); it works great and I loved being able to build it VISUALLY using the IDE. I would now like to create a "family" of related components, and to do so, would like to create a superclass of this component, and then inherit this component and othe...
I am developing various components, and regularly run into the need to have a property that has a "one-to-many" relationship, component-to-property-member. The components are often visual components, but not always, and sometimes need to be registered with the IDE (i.e. use the Property Inspector), but not always. I find myself unsure ...
I am developing a package of IDE-registered components, most of which are derived from a base TFrame class. There are also various custom dialog forms that are called by these components, included in the package. I'm working in Delphi 2007. I'm noticing that sometimes frame and form units, which normally have an associated DFM file, d...
Yet another TFrame IDE-registered-component question from me. Thanks for all the help, fellow programmers. : ) Playing around with Darrian's TFrame inheritance suggestion here: Specifics: Basically, I have a TFrame-based component that I've registered to the IDE, and it has worked wonderfully. I'm now developing a few "sister" compo...
Im not sure if i have explaned this the best i can but, here we go... I have 2 Custom components on a form, Which are link together at design time through the IDE. Whenever i call a procedure from on of the Component i get the Access violation, Access violation at address 0049A614 in module 'Project2.exe'. Read of address 00000...
I'm using Delphi 2007 Pro. I have a runtime package that includes a number of compound components I'm developing, which are based on TFrames. There is also a related design package which installs these components to the tool palette. These TFrame descendents use a number of third-party components, for various reasons, and also inherit ...
Hi I am developing a custom component using JSF 1.2 . My tag class extends UIComponentELTag and has variables of data type ValueExpression. The values for these are getting set from the corresponding attributes of the tag. (Using setProperties function) Example, <sr:show name="#{backingBean.name}" ...> #{backingBean.mainContent}</sr:...
I have a series of visual compound components that I'm building, which use similar / common "connect" methods, which fire up there internal tables, etc. I am automating some of the connection stuff to connect automatically at runtime. How do I tell, at the component level, if the current state is runtime or designtime? ...
I have the following two classes: TcmTPDataPanel = class(TcmTPBasePanel) Database: TnxDatabase; Session: TnxSession; private FDataConnector: TcmTPDataConnector; MyNxDataBase: TnxDatabase; MyNxSession: TnxSession; MyRefNxDataBase: TnxDatabase; protected procedure Disconnect; virtual; abstract; procedur...
This is a continuation of the project I was working on here: http://stackoverflow.com/questions/692173/circular-reference-issue-with-classes-which-use-each-other The advice received there fixed the ciruclar reference problem (again, thanks for the help). Now I'm wrestling w/something else: TcmDataPanel.FObservingDataPanels always ends...
Hi, I have created a custom TAction type which has 2 additional properties which are of type string, and enumeration. The string value is showing in the object inspector fine, however, the enumeration type is not appearing at all. How can I get a custom enumeration type to display as a drop down property value in the object inspector? ...
Now that I am learning more about design time aspects of component development, I have what may turn out to be a couple of IDE "plugins" targeting Delphi 2007 (+ others if compatible). The forms / UI for these, ideally, will utilize some of the third party components I use regularly. Assuming the licensing is okay to distribute those c...
Hi all, I have component (descendat of TPanel) where I implemented Transparency and BrushStyle (using TImage) properties. All it's ok when I have one component of this type on the form. Bun when I pun on the form more components of this type only first visible component is painted. When form is moved and first component is under other ...