how to have only one child form open at a time. I'm trying to close the open one from a second button on the parent form. or maybe there is some way to use the same button to close the first form and open the second.
View 3 RepliesI'm having a lot of trouble finding a solution to my problem, and its probably because I don't know exactly how to ask the right question - can anyone here point me in the right direction?
View 3 RepliesI have a program in VB.NET 2005. At some point I have to open an Access2003-Application for getting data in it. I do that by pretending my program is a human user and let it do all the work in Access as a human user would do. Filling Fields, pressing buttons etc. I use the Primary Interop Assemblies for that. So far so good. That code is in use for over half a year now. In the last week I got Office 2007 installed on my machine. Of course I tested the installed version of my program if everthing still works. Every test was succesfull. But if I do the same tests in Visual Studio it always crashes.
All I get is this Errormessage: {"Das COM-Objekt des Typs "Microsoft.Office.Interop.Access.FormClass" kann nicht in den Schnittstellentyp "Microsoft.Office.Interop.Access._Form3" umgewandelt werden. Dieser Vorgang konnte nicht durchgefhrt werden, da der QueryInterface-Aufruf an die COM-Komponente fr die Schnittstelle mit der IID "{66B22FB4-F70E-4F03-A00A-F76E9ADBBF10}" aufgrund des folgenden Fehlers nicht durchgefhrt werden konnte: Schnittstelle nicht untersttzt (Ausnahme von HRESULT: 0x80004002 (E_NOINTERFACE))."}
For all who can't read german:
"Microsoft.Office.Interop.Access.FormClass" can't be converted in to "Microsoft.Office.Interop.Access._Form3" ... Interface is not supported.
Code I use:
Dim access As Microsoft.Office.Interop.Access.Application = Nothing
.
.
.
access = New Microsoft.Office.Interop.Access.Application()
[CODE]...
The Error occurs when I try to access any property of "access.Forms("frmTest")"
Is there a way to control the size of a minimized MDI form. When I minimize a child form, it apprears at the bottom with the form buttons (minimize, restore and maximize) and just about 2 or 3 characters of the Title Text. I would like to have more of the title text showing so the user can figure out what window he wants to restore if he has a couple of them minimized. If not that, is there a way to have a "tooltip" popup when I move the mouse over the minimized form.
View 2 RepliesWe've been asked to make a program based on a spec where we enter some details and it will then output a graph.Part of the assignment asks us to set up a timer so that the bar chart will display each bar seperately with a time delay between each one.However the timer is assigned to a form (Form2) while the draw commands are within another class called Expenditure.
While the specification doesn't specifically say we should stop the timer from within the class it is implied.Now I have tried Form2.Timer1.Stop() and Form2.Timer1.Enabled = False within the class without any luck.I'm wondering is it possible for the Expenditure class to stop the timer or does it need to be done within Form2?
I am playing with VB 2008 using .Net 2.0 as the target to compile to and am trying to figure out if it is possible to create multiple countdown timers one in each form using a single timer.I have attemtped but the logic escapes me. If this is not possible I know how to use a timer on one form for that form.
View 1 RepliesI have VS 2008 and am working in VB.Net forms.I have a webbrowser control where I am trying to control input fields that are dynamically created. If a text field has proper handles such as id and name tags there aren't any problems.
For example, I am trying to work with twitter for posts. I know twitter has an API but I want to work with many similar systems and want to avoid the API as its case specific and I want to scale things within the VB.Net form. The login fields for twitter are easily handled, however the posting field once your logged in is just a text area with a class. There is a tagname but I have been unable to post using the tagname element.Any examples of posting to twitter without the API ?
web1.Document.GetElementById ... ?
web1.Document.GetElementsByTagName ... ?
I've done extensive searching but can find nothing to make it happen. DOM inspectors havn't revealed much about the field.
I have a Microsoft LifeCam Cinema Webcam. I have written a simple application thats STARTS the video capture, STOPS the video capture, captures a STILL image and CLEARS the still image on one form using TWO picture boxes....one to hold the STILL image and the other to show the VIDEO from the Webcam.
View 3 RepliesI have a Microsoft LifeCam Cinema Webcam. I have written a simple application thats STARTS the video capture, STOPS the video capture, captures a STILL image and CLEARS the still image on one form using TWO picture boxes....one to hold the STILL image and the other to show the VIDEO from the Webcam.I am using the VFW(Video for Windows) API to interface to the Webcam and everything in the application is working as intended with NO PROBLEMS. I use No DirectX, No ActiveX/COM, No Intermediary file, just live video stream.I do however wish to control the ZOOM feature of the camera using the VFW API.(increase and decrease)
View 2 RepliesGood Day. Kinda banging my head against the wall on this one. I have a Mdi application with the start form(mdiparent) and form1(mdichild). On the start form, there is a textbox and a button. Heres how I want it to work:
1. value is entered into textbox and button is clicked
2. if form1 is open with that value, Bring it to the front if not, create a new instance of form1
If Not IsNothing(frmForm) Then 'If it is something
If Not frmForm.IsDisposed Then 'it's not disposed
'loop through the open form1s and compare the form1s property to the startform textbox
'if its the same, bring the form1 to the front
[code]....
I have created a class for a Sports Facility. A facility has a Name, Status, Notes, etc as members of the class. This works well, I can create a new instance of an exisitng Sports Facility from the database, create a new instance, etc. All working well.What I am stuck on is accessing a list of Sports Facilities. I know I can create a new list by doing
Dim List As New List(Of Facility)
For Each fRow As DataRow In ds.Tables("Facilities").Rows
List.Add(New Facility(fRow.Item("FacilityID"))
Next
I have a program with 3 forms; each has a different role behind them. Form 1 loads when the program executes and the other 2 load by clicking on buttons from form 1. I would like to implement a multithreaded approach where even after clicking on form2 and form 3 I can still execute other form 1 options while form2 and form 3 contents execute. I read through some tutorials and still not to sure how to implement. I figured I need to create instances of the forms 2 and 3 but how to call the threads and control them? I did try a simple one and had some error concerning delegates.
View 4 RepliesI am trying to create a new instance of a form if its not allready been created the only problem is is that the instance creation is inside a worker thread.[code]...
View 2 RepliesI believe one or more versions of VB.Net did away with "default instances" for Forms.
1) Was it in the 2003 or 2005 version(s)?
2) With the more recent 2008 and 2010 verions, is it possible to use a template or
change one of the files in the project so that default Form instances are not created?
I was recently looking at some of the other .Vb files in VB.Net 2008 Express Edition.
By the way, just so you know I could install a full version of Visual Studio if need be from;
2203, 2005, 2008 or 2010
I'm using Visual Studio 2008 writing a Windows Forms project and I'd like to know a way to step around 'default instances' of forms. I don't like default instances, they constantly get in my way, and working in a team it's causing some really annoying confusion about the object identity of which form is actual in focus at this moment. This means I need to go threw the entire project (big) and remove ALL references to any 'default instance' of a form. But this is difficult to do as there's no errors or anything, it basically requires me to search for every text of "MyFormType." and then checking if it's accessing a default instance and fix it like that.
It'd be nice if I could just turn it off or something so I could
1) easily find all erroneous lines of code
2) avoid the accidental use of it in the future by anyone on the team
I am making a visual basic game. And in the game I have a few instances where I want to call open a window (let's save to save the user's preferences) from a form, then I want to go from that form to another one.
Example:
The user has completed the new game page. I have the users choices in a host of string, integer, and boolean variables. Now I want to use a generic saving screen I made with a progress bar. When I open up the saving box, I want to close or hide the new game setup menu (whichever I need to do). Then when it is done saving I want the Saving bar to return and cause the new game form to open the actual game form and close itself.
So I guess my question is this: What is a reliable(or correct) way to poll for a return in form to signal it to go ahead with execution?
Second:
This is similar to the first question. Instead of keeping the first form open when I use the saving form; is there a way I can save the name of a page I want the saving bar to go to once it's done?
I want the user to enter their prefered username before they start a new game for the first time. So I poll the saved username setting I have and if it equals "username" I want the Username entry form I made to pop up, but once it's done I want it to immediately call the new game screen. I also want to use this username entry form on the options screen so that the user can change their accepted name at anytime; but I want this screen to return back to the options screen.
What is the accept way to do this? Is it done through stacks? (form information -> stack : load new page : Do stuff: load stack value -> goto)
Finally:
Do I have to keep a window open (not close it) to access the variables that I have defined in it, and have stored values too? Does this apply to hiding too?
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?
View 1 RepliesIve 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
View 16 RepliesI 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?
View 1 RepliesHere is the pertinent part of my code:
Public Class Form1
Inherits System.Windows.Forms.Form
Private Sub MenuItem3_Click(ByVal sender As System.Object, ByVal e As System.EventArgs)
[code].....
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.....
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
View 6 RepliesI am looking for a way to convert Access 2003 Forms to VB .NET (2010) forms. I don't care about the code, I can redo that no problem, but the forms have a lot of objects in them and I don't want to recreate them all. Any ideas? Preferably free??
View 2 RepliesI have a problem with any vb.net application running on my windows 2003 vps. I've tested this by creating the simplest form with just a button on it and executing the following code...
[Code]...
I can launch a program from inside my program and embedded it in my program using a Visual Basic Control such as a Panel. That works well if you launch say NotePad or Calculator.However, If I want to launch a program that uses MULTIPLE forms... all that gets embedded is the Main Form... All the other forms are floating on the desktop nonconstrained... So If I minimize my program the other forms are still shown.So what I am attempting to do is to get ALL the Forms from the external program embedded into their own objects on my form.Have pieced together a program from a couple of program samples that I have seen across the internet... Here's the code so far:[code]The Main form for the program that I am attempting to embed is 384 x 347 in size.Panel1 is a Panel Control on my Main Form."MyProgram.exe" is a program that I have written myself.I have looked at Spy++ for Visual Studio 2003 and it is able to identify ALL the forms from my program.My question is how do I embed ALL the forms from my external program in the NEW Program?
View 8 RepliesIm 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.
View 2 RepliesI 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?
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..
View 2 RepliesI 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.
Has anyone ever had or dealt with resizing issues on MDI Child forms? I am working on a VB.Net Windows applciation project I inherited from another devloper. When I took it over the forms had already been designed. There are one MDI Parent Form and two MDI Child Forms. When the application starts up the parent form and one child form open by default. Both the parent form and the child form will maximize, restore, and minimize. Although I have to move the parent form slightly, when it is not maximized I can resize it with the mouse pointer as expected. The child form will not resize and when I move the cursor to the border of the child form I do not even get the mouse pointer. Also, when both the parent and child form are maximized the vertical scrollbar on the child form is no longer displayed.
One potential problem is that there are lots of controls on the child form, which are inside several group boxes. When I comment out the controls, the blank form displays without the vertical scrollbar but will resize with the mouse pointer as expected. When I uncomment the controls the resizing does not work any more. The AutoSize propery on all of the controls is set to True. I tried commenting out the code setting the Autosize property to True on the group boxes only. The result of that is that the resizing still does not work and I lose the vertical scrollbar.I am trying to avoid having to redesign the form completely, however I am running out of alternatives. The project will not pass UAT if the resizing does not work.