I have created an derivated class from CMFCTabCtrl to have access to the ON_WM_RBUTTONDOWN message.
But it doesn't work, I think in CMainFrm I have somewhere to replace the origional class with my derivated class. But I can not find no place where the original CMFCTabCtrl class is called. So I guess that maybe happens inside another class.
By the way, EnableMDITabbedGroups is enabled.
Related
When collapsing/hiding a method the name of the method is hidden with it. This is obviously counterintuitive since all I want to see is the method or class name. I tried looking though the settings but couldn't find anything that fixed it. Thanks for the help.
Class before being hidden
Class after being hidden
WHAT I HAVE is a standard JavaFX application: Main.java, MainController.java & main.fxml. To add custom component, I created CustomComponentController.java and custom_component_controller.fxml.
PROBLEM is that in CustomComponentController methods I need to reference other methods and standard components from MenuController. I add public static MainController mc; to MainController class body, so that it can be seen from CustomComponentController (MainController.mc.neededMethod()). Then I try to pass everything to it in MainController.initialize() method (mc = this;) - when debugging this breakpoint, I see this full of components instances, but mc remains with null components afterwards.
QUESTION is how to reference the running instance of MainController to use its components and methods in other classes and to crossreference different custom components from each other? How to clean MainController code from event handlers and assistance methods of components by moving it all to component's own class?
I tried the following approaches, but found no way to make them work without errors:
Accessing FXML controller class
How can I access a Controller class in JavaFx 2.0?
JavaFX 2.0 + FXML. Updating scene values from a different Task
JavaFX 2.2 -fx:include - how to access parent controller from child controller
The problem can be solved if you comply the following conditions:
Not only public, but obligatory static MainController mc should be.
Do not forget id in fxml for CustomComponentController: <CustomComponentController fx:id="cc"/>, where cc is the name of the "#FXML imported" CustomComponentController in your MainController class.
Omit parameter fx:controller="main.CustomComponentController" in custom_component_controller.fxml as it results in "Controller value already specified" error (a conflict between main.fxml and custom_component_controller.fxml markup declared controllers).
Put mc = this; in the beginning of MainController's initialize() method. Before using mc in CustomComponentController class, check if it's not null. It can be null when all components, including CustomComponentController, are instantiated at application startup, but there is no mc instance yet. MainController method initialize() where MainController is instantiated is called after components are loaded. Therefore better practice is to use approach in the next paragraph.
In main.fxml create primary component of the same type that CustomComponentController and with the only fx:id parameter. Replace primary component with your CustomComponentController by creating reloadCustomComponents() method and calling it from CustomComponentController's initialize() method. Do it by adding the following to reloadCustomComponents() method:
customComponentAnchorPane.getChildren().remove(customComponent);
customComponent = new customComponent();
customComponentAnchorPane.getChildren().add(customComponent);
Thus all components can be placed outside CustomComponentController with all their methods and reloaded at the startup of the apllication. All component declarations stay in MainController class and can be reached through MainController mc reference. No duplicate creating of components in detail with parameters is needed.
Your problem looks like the classic catalog-crud forms updating, I implemented an interface that I called Updatable with an update method so I could reference any catalog form with any crud form easy after passing Controller Main Class as the UserData Property of the Child Root Component's Form
Hope it Can Solve your problem
Getting interested in learning ATL, I started reading this tutorial and I got confused at reading this (also related):
If you want to extend the capabilities of a predefined window class, such as the button or list box controls, you can superclass it.
Why is it called super-classing instead of sub-classing?
Super-classing is writing a new class, that would behave as it it was a new control altogether. A CColoredButton inheriting from CButton would be superclass, when you create instance of CColoredButton
When you already have a control (probably on resource), you may subclass it. Here the "control" in picture is being handled differently and hence the term subclass.
Any class may behave as super class or subclass. You would call some of SubclassXX function/method to subclass already existing control. You would create instance of a control at runtime by allocating the C++ object (CColoredButton) by calling its Create method - here the term super-class.
I have 1 method which returns the count of records,i want to access this method in design page(ascx) .how to do that?
If your method is in the code-behind class for the ascx then method needs to have public or protected (because ascx class will inherit from code behind class) - then you can use server directives or data binding to access the method - for example
<span><%= this.CallMyMethod() %></span>
or
<span><%# this.CallMyMethod() #></span>
For later (data-binding) syntax to work, you must call DataBind method on the parent(ancestor) control.
In case, your method is in another class and its instance method then you need to have instance of that class to call the method. Calling mechanism remains same as above except replace this keyword with the variable (instance) of another class. For static methods, you can invoke them using className.MethodName syntax. Note that the method has to be accessible from ascx (i.e. public or internal etc).
i am creating a UserControl in WPF but it is not directly inherited from UserControl class. My base class is something as shown below
public class MyUserControlBase: UserControl, IMyInterface1, IMyInterface2
{..}
Now in my Usercontrol project, i have changed the usercontrol class signature
FROM
public partial class MyUserControl: UserControl //This is by default when the project was created.
TO
public partial class MyUserControl: MyUserControlBase
But it is giving error "Partial declarations of 'UI.MyUserControl' must not specify different base classes".
Please suggest what i have to change to make it run.
You also have to change where this control inherits from in the XAML part of your class. Still inheritance in WPF is a bit tricky, see this tutorial on how to get it right: http://svetoslavsavov.blogspot.com/2009/09/user-control-inheritance-in-wpf.html