Limit Child Forms To A MdiParent?
Mar 20, 2012
I have this function
Private Sub createChildForm(ByVal winForm As Form)
'Take a form and set app as its parent form
winForm.MdiParent = Me
winForm.Show()
End Sub
When some one wants to view the "About" form, it's called like this:
createChildForm(New f_about)
But my function doesn't stop them from creating an unlimited number of about windows and I need to put that limit to one form.
For example, I will have a login screen, but I don't want them logging in over and over again in different accounts because my subroutine doesn't stop a form from being created/opened more than once.
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Feb 5, 2012
Anybody know a way to detect and set the form size in the child and MDIParent forms?
I'm having all kinds of problems from scroll bars popping up, to can't get the form to fill the parent. Pretty sure I have tried every possible combination in the forms properties 10 times.
I'm really getting tired of beating myself against this. Anybody seen a good tutorial on the finer points of MDIparent / MDI Child page size, etc.
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Jun 12, 2012
I have an MDI windows form setup. On load it sets the child form(frmMainData) and opens it.
I have a progress bar on my child form that I wish to show(set to visible = false in design)
I have menu strip on my parent form.
For simplicity I have just set the command against one of the menustrip options to do the following[code]...
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Aug 22, 2009
Has anyone had any luck with having different window states with multiple open child forms?for example if you have a single child form opened and say it is maximized.then open a second child form as normal, the first form will then be set to normal.all the open child forms will mimic the newly opened forms state.and i believe they will mimic when making some changes to one forms state.the others will follow.i have not had luck keeping this from happening in most situations.
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Dec 14, 2010
having different window states with multiple open child forms? for example if you have a single child form opened and say it is maximized. then open a second child form as normal, the first form will then be set to normal. all the open child forms will mimic the newly opened forms state. and i believe they will mimic when making some changes to one forms state. the others will follow.
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Nov 20, 2010
i have a program with MDI parent and child. initially, the program will call a child e.g. ChildMain. on this child form, 2 processes are run. the 2nd is ran on a backgroundworker. the backgroundworkder in created through code. the process in the background worker is to create another childform but i'm having problem setting the MDIParent of this child form since VS is saying some sort of cross-thread issue.
[code]...
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Jan 2, 2010
I'm Using VB.NEt 2005.... the Problem is...If I close Mdiparent When i've opened many MdiChild Forms All Forms Also Closed.I Want that when MdiChild Forms opened if i Press Close Button of MdiParent Form there Should be a Msg that "First Close MdiChild Forms " then Close Mdi Parent.
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Jun 26, 2011
I am having a toolstrip in the mdi form which contains save, update delete and clear buttons. The child form is having save, update, delete and clear as public sub routines , and client form will not have any standard buttons, I will click the respective button in the parent tool window which should call the child forms function.
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Sep 16, 2009
i am asking about using the progress bar into the status bar to move when i load any child form inside the MDIParent form.
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Feb 23, 2010
In VB 2008, I have a Parent form with a combo box on it. There is a child form also with a combo box on it. I want to be able to change the values on the child form based on what the user selected from the main form. The user launches the child form from a toolbar on the Parent form. The following code is run:
[Code]...
What I want to do is if the Parent's combo box has "Red", "Blue", "Green" values and the user selects "Green", the child form's combo box(With the same values) will also change to "Green". (I do not need to change the Parent form if the child form changes.) I've tried changing the Child's combobox from the combobox's change event on the Parent form, and the code runs, but nothing changes on the child form.
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Mar 25, 2009
I want that the child form's moving space inside the main form would be limited so it wouldn't go over the borders like in the picture.[code]...
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May 20, 2011
how do u actually limit a listbox to say 10 items
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May 3, 2010
Form1 is a mdi container. It has a bunch of forms that can load inside of it as mdi children. If I close each open form inside the form1, and then click the red X at the top right, application exits fine.If I click the red X without closing the forms inside I get: An unhandled exception of type 'System.CannotUnloadAppDomainException' occurred in mscorlib.dll
Additional information: Error while unloading appdomain. (Exception from HRESULT: 0x80131015) However I can break from it. How do I get the application to not show that error? What must I do to fix those inside forms or close when the red x is clicked?
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Sep 11, 2011
Is there a way to limit the topmost property? I have two forms and I only want to one form form topmost to only one form. I don't want it to be topmost to all of the windows in my computer.
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May 6, 2010
basic question which i cant figure out is i have a listbox and i total up all the values in it and send it to a text box. but in the listbox i cant have more than 10 items in it i at the moment have a message box telling me how many items i have in the listbox which is simply MsgBox(ListBox2.Items.Count()) when the 10th item is entered i need it to not allow me to enter anymore so i know it needs to go 0-9 but not sure how to implement it.
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Dec 30, 2009
I am using tooltips to show information that overflows a label. The problem is that when the information is really long it spans the entire width of the screen and is difficult to read, Is there any way to limit the size of the tooltip?I was thinking one way may be to insert linefeeds at points beyond a certain width -- messy, but it would work.
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Oct 24, 2010
I have a passport number textbox and I want to limit the user to 7 numbers and a Letter in the textbox. How Do I do that?
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Feb 3, 2011
I have a textbox and I would like to limit this textbox to enter 10 digits only. Is there a way to do it?
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Nov 10, 2009
I want to set a time limit over openFileDialog window, if, for example, 10 seconds elapsed without any user input, it will be killed automatically, how to implement that.
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May 6, 2010
How do I code in vb.net that the text box can only accept 10 inputs from the user. User can only enter 10 strings.
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Dec 11, 2009
I build my first Project composed of several forms and it�s working just fine. Id like now to redesign the project as a MDI Application. Once created the parent form, I can create child forms but thats not what I need. What I would need is convert my already designed and working forms to MDI child forms. How can that be done?
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Feb 11, 2009
Ive been working on this project of mine for some time now... though im not involved in IT in my current company, im just trying to help to at least have their system computerized (they are still doing it manually by paper & calculator)... I have one problem though which made me stick for 2 days (and still counting) without progress...How To Drag & Drop Between 2 Datagrids Between 2 similar MDI Child Forms
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Jul 1, 2009
I know I can set IsMidContainer in forms for parent-child relationship forms. I just want to know if the parent form could be a panel. If so, how can i do it?
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Apr 8, 2011
I have made a project on Library management system using Microsoft Visual Studio 2008 and Sql server 2005 .I have used MDiParent form in this project, from where I can click on the menu item to open the desired form.
I am now able to open the child forms in the main window background.Now what happens is When I click on one menu Item it open in the parent form background.I am able to open all child forms corresponding to the click event in the MenuToolStrip ...all in the Parent form Now the problem is that I cannot minimize child forms when I minimize Parent form..I want child forms also to minimize along with the Parent form.. Also are child forms still not attached to the parent Form is also my question here.....
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Mar 26, 2011
i'm a beginner in MDI form. i created a MDI form with buttons and child forms. when i click the forms continuously, many forms will be opened. how to avoid forms overlapping, in other words, duplicate
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Feb 18, 2011
Im working with MDI parent/child objects. when closing the child objects i need the child to check to see if it is the last child object before closing. i couldn't find anything on google, maybe im searching for the wrong thing.
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Jan 18, 2012
i have a program im working on that has 68 different buttons on 1 form. each button opens a seperate form. each from opened from the buttons starts with "helmet_" i need a way to only allow one form with that starting name to be open at a time. otherwise you could open all 68 forms at once and that would cause issues.
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Oct 12, 2010
I am re-doing part of a GUI for my project, The Windows Alias Generator, and decided to switch to MDI. The child forms consists only of RichTextBox1. Here's the generate routine called when the save is clicked:
Private Sub SaveAsToolStripMenuItem_Click(ByVal sender As Object, ByVal e As EventArgs) Handles SaveAsToolStripMenuItem.Click, SaveToolStripButton.Click
Dim ActiveMDI As Form = Me.ActiveMdiChild[code].....
But because I cannot define richtextbox1.text from the currently active MDI, I cannot use this routine...my question is this: How would I get RichTextBox1.text from the save option in the MDI form?
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Sep 19, 2011
I have a MDI child form with its own menus. (TestForm)When I call the child form (Testform.show) from the parent form menu, the MDI Child form's menus are appended to the container form..Essentially, the container form steals the menu of the child form..
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May 11, 2012
I have a MDI parent on which i launch a child form
Dim NewMDIChild As New Frm_addOT
'Set the Parent Form of the Child window.
NewMDIChild.MdiParent = Me
'Display the new form.
NewMDIChild.Show()
His child form contains several comboboxes which hold data from a dbase(sql)
When new data is entered in the cmb it checks the database and if it isn't in there it launches another window
FRM_OTlistaddklant.Visible = True
and copy's the newly entered text in a textbox.
FRM_OTlistaddklant.TB_klantnaam.Text = OTaddklant_naam
then i can give in the details etc.
now, when this is done and the users presses a button "Add"
the information is written to sql(which works perfect)
than i have a public sub on the Frm_addOT which should refill the combobox and
also set the backcolor to a specific color.
and the last two things will not work. Actually when i try to change the backcolor on Frm_addot it triggers the event backcolorchanged and says it has changed but it is not visible.
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