Visual Basic

18-Mar-09 20:27

Hi to Everyone,

As per my client request, I want to kill/hide the process the start bar, on the application start-up.And show it (start the process again)on application ends. Not only the menu, but the full bar itself.

Could anyone please tell me how to do that?

Thanks in advance

<div class="ForumMod">modified on Thursday, March 19, 2009 2:45 AM</div>

_Damian S_18-Mar-09 20:32

_Damian S_

18-Mar-09 20:32

You writing a virus are you?

Knowledge is knowing that the tomato is a fruit. Wisdom is not putting it in fruit salad!!

Booger Mobile - Camp Quality esCarpade 2010

hrishiS18-Mar-09 20:46

18-Mar-09 20:46

I am sorry, But I am not..

I have a vb.net application to be given to client. For security reason,I need to disable all possible options, so that the user cannot access anything in the system when the application is running...I have disabled the special keys,...and made the form to cover the monitor.. But sometimes the task bar comes up, top of the form. Hence I need to hide the task bar till my application runs..

May be not kill, but to hide..Also I need to know how to unhide(show) it back....
I think if I kill the explorer.exe does it... But need to know how to kill it

I am a beginner

Christian Graus18-Mar-09 20:57

18-Mar-09 20:57

himangshuS wrote:
I have a vb.net application to be given to client

himangshuS wrote:
I am a beginner

I am so sick of this. You want to write a complex application, that does something quite difficult. You have a client. You are a beginner. Did you tell your client that you are a beginner, or did you assure them that for $5.28 you could write exactly what they need, expecting that you could just come here, and we'd do your work for you ?

You are a disgrace. You should tell your client that you are a liar and a thief.

Christian Graus

Driven to the arms of OSX by Vista.

hrishiS18-Mar-09 23:48

18-Mar-09 23:48

Thanks for your suggestion Mr. Christian....
But may be I wont appreciate that.

To make it more clear, I am doing a small application for my friend's office. Thats whom I called as client. I never thought I need to discuss this.

And about the beginner. I am. I am doing this project, so that I can learn. Hence Proudly I can say I am a beginner learner.

And about the complexity of a project, I really don't think so a beginner can not go ahead to learn and do any staff. I swear I didn't born with that talent.

I have a good opinion about this forum. and I respect all here.

Also, could you please tell me how exactly you differentiate "clearing somebody's doubt" and "doing somebody's work" in a forum

Thank you once more for your suggestion.

I am a beginner

Christian Graus18-Mar-09 23:53

18-Mar-09 23:53

himangshuS wrote:
Also, could you please tell me how exactly you differentiate "clearing somebody's doubt" and "doing somebody's work" in a forum

I respect the fact that you've come back to me in the way you have. However, these forums are full of people who have no interest in learning, and the easiest way to tell them, is that they are doing a complex task and say 'I am a beginner'. As to your question - usually the way to tell the difference is that people who have a doubt, post their code and ask for help. People who don't post code, generally are looking for a cut and paste solution.

What you're asking for, isn't really possible, I don't think. What programs a user can run, what things a user can do, are set by group policy by the network or local admin, not set through code by individual programs.

Christian Graus

Driven to the arms of OSX by Vista.

hrishiS19-Mar-09 0:05

19-Mar-09 0:05

thanks for your reply.

"Usually the way to tell the difference is that people who have a doubt, post their code and ask for help. People who don't post code, generally are looking for a cut and paste solution."

I dont know, when one doesnot have any idea about an concept and would need some help from a expert (ofcourse you are), what code to put it.

I was expecting an idea or a way to go ahead. Not the whole bunch of code.

Regards
HimangshuS

Christian Graus19-Mar-09 0:19

19-Mar-09 0:19

Fair enough. Like I said, it's not going to work. I can CTRL-ALT-ESC on any PC and get the task manager, and from there run explorer, if it's been stopped ( explorer is where the menu comes from ). So, you can't do what you want.

Christian Graus

Driven to the arms of OSX by Vista.

hrishiS19-Mar-09 0:48

19-Mar-09 0:48

Oh I see. Thanks anyway....

-----------------------------
I am a beginner

Yusuf19-Mar-09 4:22

Yusuf

19-Mar-09 4:22

Christian Graus wrote:
Fair enough. Like I said, it's not going to work. I can CTRL-ALT-ESC on any PC and get the task manager

For straight out of the box implementation, yes you are right. But the is a way of suppressing Ctrl+Alt+Del key sequence as well.

Microsoft has removed the Ctrl+Alt+Del key sequence out of the keyboard API and moved it to GINA. to listen to those keys, one needs to write a replacement GINA. Writing GINA is not fun and one small mistake can screw up windows logon and locks out windows. It is not fun, and I don't recommend people do it, unless there is very compelling reason to write one. What is more is, the *user* GINA is loaded by win logon through registry key entry, which can be replaced by other GINA easily. Only one GINA can run at a single time.

GINA[^]

Yusuf

Oh didn't you notice, analogous to square roots, they recently introduced rectangular, circular, and diamond roots to determine the size of the corresponding shapes when given the area. Luc Pattyn[^]

Yusuf19-Mar-09 0:21

Yusuf

19-Mar-09 0:21

You see there are crap load of people who scream at the top of their tounge to get a solution for problems they have no clue for. You seem to be eager to learn and we are here to help. Next time try to articulate your question and show what you have done and what you need help. That may yeild a better response.

As far as your question it is doable. you would need to learn a bit more about windows programming. with all respect, vb is just piece of crab. if you are looking for such serious application look to C++ as your friend.

Here are couple things to look at. I am not vb programmer, and this is converted from C++. You may have to tweak it to make it work.

Declare Function FindWindow Lib "user32" Alias "FindWindowA" (ByVal lpClassName As String, ByVal lpWindowName As String) As Long<br />
Declare Function SetWindowPos Lib "user32" (ByVal hwnd As Long, ByVal hWndInsertAfter As Long, ByVal x As Long, ByVal y As Long, ByVal cx As Long, ByVal cy As Long, ByVal wFlags As Long) As Long<br />
<br />
<br />
Dim return As Long<br />
<br />
'get the Window<br />
return = FindWindow("Shell_traywnd", "") <br />
<br />
'hide the taskbar<br />
ShowWindow(return , SW_HIDE);<br />
<br />
'show th taskbar<br />
ShowWindow(return , SW_RESTORE)<br />

hrishiS19-Mar-09 0:50

19-Mar-09 0:50

thnaks I will give a try with it

-----------------------------
I am a beginner

Eytukan19-Mar-09 0:21

Eytukan

19-Mar-09 0:21

himangshuS wrote:
To make it more clear, I am doing a small application for my friend's office. Thats whom I called as client. I never thought I need to discuss this.

Breaks my heart. Christian was right with your limited information. Even I felt the same way in C++ forum, but your reply is quite convincing. You can expect me to answer you again somewhere. But as I pointed you last time, Be crisp with your question (May be this one is okay). Like when you are making a chat application, You would have questions on Sockets/MFC/Doc/view all at the same time. You shouldn't ask them all in one go. First you should try a simple socket, then a simple Dialog & others and ask one by one. When you integrate them you'll be again left with few questions. You are welcome to ask them again. But don't flush questions in one go. Anyway good luck for your new 'requirement' Wink | ;)

Removing the task bar[^] Not a link to code, but another way of doing it. Requires Object-Dock appln.

He never answers anyone who replies to him. I've taken to calling him a retard, which is not fair to retards everywhere.-Christian Graus

hrishiS19-Mar-09 0:44

19-Mar-09 0:44

thanks for your reply and suggestion. I will do that.

-----------------------------
I am a beginner

Dave Kreskowiak19-Mar-09 2:29

Dave Kreskowiak

19-Mar-09 2:29

Stop. What you're doing is not going to work. Pick the Windows XP or Windows Vista Resource Kit. In there, there is a guide to configuring Windows for Kiosk mode, which is what you are ultimately after. Just killing off Explorer to get rid of the Start button is not going to stop the user from doing anything.

A guide to posting questions on CodeProject[^]

Dave Kreskowiak
Microsoft MVP
Visual Developer - Visual Basic
2006, 2007, 2008

drawing line

dkosasih18-Mar-09 19:09

dkosasih

18-Mar-09 19:09

dear fellow programmers,
i have been trying to achieve this but it's so hard.
i am trying to say make an image and when i mouse down the image and drag it,
i want to draw a line from the initial of the image to where my mouse is.
and when i release it, the line will disappear.
is there anyway I can achieve this?
thanks all...

Re: drawing line

dan!sh 18-Mar-09 19:22

dan!sh

18-Mar-09 19:22

You need to draw the line in the Paint event of the form.

जय हिंद

Re: drawing line

Christian Graus18-Mar-09 20:07

Cannot update or delete access database

18-Mar-09 20:07

There's paint program samples that will show you how to do this. You need to store the mouse position in member variables, and then do what danish said, draw them in your paint event.

Except, as you want the line to disappear when the mouse comes up, this is actually a place where the CreateGraphics method of the form is valid, it's used to create a graphics object on which to draw temporary things.

Christian Graus

Driven to the arms of OSX by Vista.

hendrikbez18-Mar-09 19:09

hendrikbez

18-Mar-09 19:09

I am trying to update and delete ,but get this error code now, it did work before.

error code == "There is no row at position -1"

My update code

Private Sub btnUpdate_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnUpdate.Click

       Dim cb As New OleDb.OleDbCommandBuilder(da)

       ds.Tables("Blokkies").Rows(inc).Item(1) = TxtLuidraad.Text
       ds.Tables("Blokkies").Rows(inc).Item(2) = txtA1.Text
       ds.Tables("Blokkies").Rows(inc).Item(3) = txtA2.Text
       ds.Tables("Blokkies").Rows(inc).Item(4) = txtA3.Text
       ds.Tables("Blokkies").Rows(inc).Item(5) = txtA4.Text
       ds.Tables("Blokkies").Rows(inc).Item(6) = txtA5.Text
       ds.Tables("Blokkies").Rows(inc).Item(7) = txtA6.Text
       ds.Tables("Blokkies").Rows(inc).Item(8) = txtA7.Text
       ds.Tables("Blokkies").Rows(inc).Item(9) = txtA8.Text
       ds.Tables("Blokkies").Rows(inc).Item(10) = txtA9.Text
       ds.Tables("Blokkies").Rows(inc).Item(11) = txtA10.Text
       ds.Tables("Blokkies").Rows(inc).Item(12) = txtA10.Text
       ds.Tables("Blokkies").Rows(inc).Item(13) = txtA10.Text

       da.Update(ds, "Blokkies")

       MsgBox("Register verander")

   End Sub

I did try to use this, but still get same error

If Not IsDBNull(ds.Tables("Blokkies").Rows(inc).Item("luidraad")) Then
            ds.Tables("Blokkies").Rows(inc).Item(1) = TxtLuidraad.Text
        End If

My delete code

Private Sub btnDelete_Click(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles btnDelete.Click

       If MessageBox.Show("Is jy seker jy wil die register verwyder?", "Delete", MessageBoxButtons.YesNo, MessageBoxIcon.Warning) = DialogResult.No Then

           MsgBox("Register is nie verwyder nie")
           Exit Sub

       End If

       Dim cb As New OleDb.OleDbCommandBuilder(da)

       ds.Tables("Blokkies").Rows(inc).Delete()
       maxrows = maxrows - 1

       inc = 0
       NavigateRecords()
       da.Update(ds, "Blokkies")

   End Sub

dan!sh 18-Mar-09 19:25

dan!sh

18-Mar-09 19:25

Check the value of the variable inc and check that the dataset is not empty.

जय हिंद

hendrikbez18-Mar-09 19:31

hendrikbez

18-Mar-09 19:31

sorry, how do you check the value and that the daataset is not empty

dan!sh 18-Mar-09 19:32

dan!sh

18-Mar-09 19:32

You will need to debug the code. Then use Add Watch or quick watch to find the value.

जय हिंद