I just found out there is a limit for the number of controls that a mfc dialog can hold, I have near 653 controls, the dialog holds just 332 of them, I searched for a solution, some suggested property sheets and property pages, but I dont's want to distribute these 653 controls in some tabs! I want all of them in one tab, so, what else can I do except using tab control or property sheets? Is it possible at all?
This is the form
It appears that some kind of grid control is what you are after. It is a single control in a form of a table that contains many cells. Both table and cells can be customized. Code Project has a whole section dedicated to grid controls. Here are first few from that section, free of charge:
http://www.codeproject.com/Articles/3176/The-ALXGrid-Control-Library
http://www.codeproject.com/Articles/8/MFC-Grid-control-2-27
http://www.codeproject.com/Articles/2879/Virtual-Grid-Control-1-04
653 controls? Seriously? No matter if the resource editor can handle it, such programming style is simply forbidden! Also, it's a waste of window handles. You should consider using a list/tree instead.
Create your controls programmatically! Inherit CWnd and create your own control. Then add an array of your controls and dynamically create them in OnCreate.
Related
Okay... this is a little difficult to explain but I will try my best.
In Custom Control while adding properties in Property Definition we can set "Allow multiple instances" which allows us to add multiple instances of that property when the control is embedded in XPage.
Similarly, I need to know whether it is possible to add (and remove) Editable Areas in a custom control when it is embedded in XPage? What I plan is that I would have a repeat control inside my custom control and I would be able to put the contents in each editable area in every loop of that repeat.
Is this the right way to go about or am I looking at this problem incorrectly? Any solution not involving editable areas is also welcome :)
Update 4 Apr 2013:
A use case context I am looking for is a simple carousel where contents of each screen in carousel can have different contents. These contents would be put into each (dynamically added) editable area. The contents can be very different from each other with one screen containing only text, other only image and another both image and text.
Look at the table walker example in the 26 original exercises. It does mostly what you are looking for (conceptually). You won't need multiple editable areas. Whatever is inside the repeat gets repeated.
What you want to do is to give the control a custom property "boolean editMode" so you can render that one line to be edited - if that's the UI pattern you want to follow.
You also could consider a dojo table with Ajax which allows for a familiar spreadsheet UI
In my Android project I've already created a custom dialog: A class named SelectColorDialog, extending Dialog, that allows the user to view a large matrix of color cells in order to select a particular color. The dialog returns the selected color value (as Integer) to the dialog initiator – typically an Activity – via a callback function.
I've a similar custom dialog, SelectTypefaceDialog, to allow easy font selection. A list of available typefaces are shown, as ListView rows, each identified by name and with an associated short sample text rendered in that typeface. The available typefaces include usual droid fonts, such as NORMAL, MONOSPACE, etc. as well as any externally sourced TTF font files that the user cares to load into a particular subdirectory on the SDCard.
These custom dialogs were not initially designed to be used directly in conjunction with SharedPreferences, preferences definition XML files or with any PreferenceActivity. Instead of, each dialog can be popped up from any activity, via the user pressing a button or via a menu item. The activity classes that create these dialogs also have internal callback classes, selection event listeners, to detect when the user selects a color or font.
These two dialogs do not have OK and Cancel buttons. Instead, the user just clicks on an item - a view of some kind - in the dialog to select the corresponding color or typeface value (implicit OK) or else presses the device’s back button to dismiss the dialog with no action taken (implicit Cancel).
I would now like to go further and incorporate these two custom dialogs into the shared preferences framework via a preferences.XML and an associated PreferenceActivity.
I would prefer to base two DialogPreference subclasses directly on these existing dialogs if possible, but I cannot see how to do so. I suspect that I cannot, and that I'll need to start all over again, and copy or adapt all the java code that is presently in the custom dialog classes – for color or font display and selection – directly into the custom DialogPreference classes instead, perhaps by overriding onCreateDialogView() and/or other methods?
This question may be a bit old, but I hope to help those, looking at the same problem in future: just extend Preference instead of DialogPreference. DialogPreference is designed badly and expected "official" way to use custom Dialog - overriding protected showDialog method does not work, because this single method contains half of class logic.
I'm creating a specific DataGridView control that includes two scrollbars so that I can control their size and visibility. So, I have created a User control that contains the DataGridView and the two scrollbars inside a 2x2 TableLayoutPanel.
The issue I'm facing is that when I add my control to a Windows Form, I can't set my DataGridView's DataSource or define the column styles from the design view, because the link that I use for that when I use a common DataGridView (that little white arrow appearing on the top right side of the DataGridView) is not appearing.
While doing some testing, I saw that if I inherit my control from DataGridView, that link appears. But if I do that, I guess that I can only extend the functionality for the DataGridView, but I need my control to be a composite control.
So, that's my question: how can I get those design-time capabilities on my custom control? I am specially interested on the columns layout and the datasource.
Best regards.
If you are doing a usercontrol (a control that has an .ascx codebehind file) there seems to be no way to control this:
How to hide the inner controls of a UserControl in the Designer?
If you are doing a WebControl (a class that inehrits from WebControl with no .ascx file) you may create your own designer and maybe somehow output the designers of both conrols. Have a look at: http://msdn.microsoft.com/en-us/library/12yydcke.aspx it explains how to create a webcontrol and its desgner.
Some things with usercontrols/webcontrols seem to be easy but are hard to implement...
Hope this helps!
In my program I want the user to be able to choose between some options so I was using wxChoice component. Unfortunately after user interaction (clicking a button) I have to show custom text (not from my predefined list). Everything works fine if I use wxCombobox control but the drawback of this approach is that each time user selects an element from a list, selected text is highlited. It is annoying. I want the component to be read-only like. How to achieve this ?
Some code to visualize my question:
wxComboBox* viewAngle = wxDynamicCast( owner->FindWindow
( ID_CHOICE_3D_VIEWANGLE ), wxComboBox );
viewAngle->SetSelection( wxNOT_FOUND );
viewAngle->SetValue(_("Custom View"));
EDIT:
This control is used to set camera view in 3D object viewer application. Possible options are like: top, left, right, etc. It is also possible that the user moves 3D object using mouse. In that case I want my combobox to display "custom view" string. However "custom view" should not be a part of combobox list because selecting this option does nothing.
wxWidgets default implementation alwasy marks selected text. Which might be misleading for the user because he might think that he is expected to input any text.
IMHO, the custom text should be added to the wxComboBox control, the program could just ignore it when user selects that option.
Also, the wxComboBox's wxCB_READONLY style could be used to avoid the highlighting thing.
I'm workin on my first webpart.
I use some number of user controls as screens. And I have a trouble here.
First screen contains a list of dynamically created options (hyperlinks). After user made a decision with click, I want to change the screen and pass to the new screen some parameters.
My dicision is to load all controls I need on webpart creation. Controls I don't need right now I make invisible.
SomeUserControl1 uc1 = (SomeUserControl1)Page.LoadControl("~/_controltemplates/SomeUserControl1.ascx");
SomeUserControl2 uc2 = (SomeUserControl2)Page.LoadControl("~/_controltemplates/SomeUserControl2.ascx");
uc2.Visible = false;
Controls.Add(uc1);
Controls.Add(uc2);
Option in first user control realized as LinkButtons (serverside). OnClik event calls a special method in the webpart class and in this method i change a visibility of my user controls and pass some parameters to usercontrol2.
I don't like this approach. Are there different ways to realize described functionality?
Thanks!
You need use a ASP.NET Wizard Control, it does what you exactly you want.
From a design standpoint what you are doing looks a little bit frightening. You should think about nesting the various user controls into a single user control that you can use as the face of your webpart. Keep the coupling between the various user controls loose and think about implementing the Observer pattern if you need to do things like playing with control visibility.