In one certain case I want to disable the tabpannel so that the controlls in the tab panel are disabled.
I want to disable the tab pannel but still I want ennable the controls in tab pannel.the need is User cannot switch over to the annother tabpannel in a certain senerio.
How can I do this requirement?.
by
dinesh
Use something besides a tab panel.
It is not standard behavior for a tab panel to have one tab "stuck" so that the user cannot move to the other tabs. You're going to throw users off if you do this.
What you are after sounds like a modal dialog. It sounds like you don't want the users to move away from a certain screen until they're doing entering some data or some such. The modal dialog is built for this purpose.
There is no direct way to disable Tab Page, only you can remove it. But in your case, you can't remove the Tab, So I think you need to put some code in the Tab_SelectionIndex change event. And when ever the Tab index comes, set it back to another one.
Try this code
private void tabControl1_SelectedIndexChanged(object sender, EventArgs e)
{
if (tabControl1.SelectedIndex == 1)
{
tabControl1.SelectedIndex = -1;
}
}
In addition to anuraj's answer, set the colour of the tab text to the disabled text colour state, so it is a visual cue it is "disabled".
Related
I am trying to create a nested side menu for a CN1 application, similar to the one in the screenshot.
For the nested sidemenu to work, I image it has to stay open when the user presses a command of a dropdown list , so that he/ she can choose an option.
But the CN1 sidemenu appears to close every time and I couldn't find a workaround.
One approach I was trying was to add an action event to the "hamburger menu ", but this doesn't seem to work.
Button sideBtn = (Button)((BorderLayout)bar.getLayout()).getEast();
sideBtn.addActionListener(new ActionListener(){
#Override
public void actionPerformed(ActionEvent evt) {
Toolbar.setPermanentSideMenu(true);
};
Neither does adding Toolbar.setPermanentSideMenu(true) to any other button's action event.
Anther approach I have in mind is to add hidden buttons to the sidemenu and repaint the toolbar when the button is clicked, but this still does not keep the sidemenu open and seems to be not very direct.
Is there anything more straightforward? What would be the best approach?
Thanks in advance for any kind response.
The setPermanentSideMenu method is designed for tablets and not for what you are trying to do. Toggling it after the init(Object) method was invoked doesn't make sense and might break your app.
You didn't list how you added the button to the side menu but adding it using addComponentToSideMenu(Component) should work (notice I didn't use the version that accepts a Command).
Is there a way to append a menu item to the popup menu that appears by default on right-clicking a GtkNotebook's tab (the one that contains the names of all the open tabs)?
As a somewhat gross hack, it might be possible to use gtk_notebook_get_menu_label() to get the GtkLabel in one of the tab's menu items on that menu, and then use parent-walking from there to find the menu.
Possibly this only works when the menu is being realized/shown, you could try adding event handlers on that label to detect that.
On the other hand, user4815162342's suggestion of re-implementing the menu is way easier.
Looking at the source code, it would appear that there is no way to append to the existing menu: the menu is kept in a private structure, and it is popped up directly on button-press event.
You can disable the default menu, connect to button-press event, and popup your own menu.
I have two windows open at a time, Suppose I click one button on a deactivated(non focused) window, I dont want the code behind the button to work, unless the user click the button again. At the same time, I want to show the tooltip when the user place the cursor on it.
you can use following property to show tool tips on disabled state
ToolTipService.ShowOnDisabled="True"
I put IsHitTestVisible = false in the grid of the window where I want the above behaviour and I get the expected behaviour
Thanks
I'm working on a WP7 appliation with Silverlight. When a user clicks the back button, I want to determine where they will go to. Is there a way to determine where a user will go without managing my own nav stack?
thanks!
To respond to the question that has actually been asked "Is there a way to determine where a user will go without managing my own nav stack?"
You could use the OnNavigatingFrom override the eventargs of which carries the Uri of the page being navigated to. I suspect this is only useful when the navigation is back to page within your app.
You cannot override what the back button does - the rule Derek mentioned is enforced by the system and the previous page/app will always be called.
You can, however, add an action to be executed on back key press:
this.BackKeyPress += new EventHandler<System.ComponentModel.CancelEventArgs>(MainPage_BackKeyPress);
Then just use the handler:
void MainPage_BackKeyPress(object sender, System.ComponentModel.CancelEventArgs e)
{
// Your activity goes here
}
The application will go back to the previous page when the user presses the Back button. If the user is at the last page in the application, then the application will exit and the user will be navigated to the previous application. To perform anything else would be inconsistent, confusing to the user, and almost certainly would fail certification.
In general you'll want to build your app composed of pages (similar to a website). For example a HyperlinkButton might be used like this:
<HyperlinkButton NavigateUri="/Page2.xaml" Content="Click here to enter page 2"/>
After clicking that then pressing the back button will automatically return to the previous page. There's no extra programming involved to make this happen... it just works.
But there are some circumstances where you'll want to override the back button. The one I ran into was the dialog box. If your app creates a dialog box, then the back button should close it instead of returning to the previous page. I wrote a brief article about how to accomplish this.
And here's a complete list of rules from Microsoft's certification requirements concerning the back button:
To maintain a consistent user
experience, the Back button must only
be used for backwards navigation in
the application.
a. Pressing the Back button from the
first screen of an application must
exit the application.
b. Pressing the Back button must
return the application to the previous
page.
c. If the current page displays a
context menu or a dialog, the pressing
of the Back button must close the menu
or dialog and cancel the backward
navigation to the previous page.
d. For games, when the Back button is
pressed during gameplay, the game can
choose to present a pause context menu
or dialog or navigate the user to the
prior menu screen. Pressing the Back
button again while in a paused context
menu or dialog closes the menu or
dialog.
As I found out, if you don't follow those rules they won't approve your app.
I mean the small exit/cancel button marked with an X in the top right hand corner. I want to implement a Logon dialog box that accepts a username/password so obviously I don't want the user to be able to dismiss the modal pop up. If it is not possible to remove or disable the button then is there some way I can intercept the closing event and stop it closing?
You can use the HasCloseButton property of the ChildWindow to hide the close button.
Please let me know if this helps.
Ezequiel Jadib
The code below prevents a ChildWindow from ever closing, effectively disabling the X button. Modify to suit your business logic.
protected override void OnClosing(System.ComponentModel.CancelEventArgs e)
{
base.OnClosing(e);
e.Cancel = true;
}
Select child window and Press F4. It will show the property window. Then goto HasCloseButton property and uncheck the checkbox.
Enjoy
HasCloseButton="False" ..
This property used to hide the 'X' button In ChildWindow