Re: Just wondering about the/any differences in this code? - Visual Basic Discussion Boards

Re: Telling the computer to shutdown, restart, standby, and hibernate

Luc Pattyn4-Jul-08 15:35

4-Jul-08 15:35

Hi,

do you remember those good old days where /? gave help information on DOS commands?
It still works for shutdown.exe, so most of your needs have an easy solution based
on Process.Start(). The restart-with-delay does not seem to be in the list of options tho.

Smile | :)

Luc Pattyn [Forum Guidelines] [My Articles]

Voting for dummies? No thanks. Dead | X|

Re: Telling the computer to shutdown, restart, standby, and hibernate

jzonthemtn4-Jul-08 15:36

jzonthemtn

4-Jul-08 15:36

Article on calling shutdown.exe[^]. Instead of doing that, just make a call to ExitWindowsEx[^].

Re: Telling the computer to shutdown, restart, standby, and hibernate

jacobjordan4-Jul-08 16:10

jacobjordan

4-Jul-08 16:10

Thanks, and that helps a lot, but neither of those methods have a function to hibernate or put the comp into standby. Is there any way i can do that?

Re: Telling the computer to shutdown, restart, standby, and hibernate

jzonthemtn4-Jul-08 16:37

jzonthemtn

4-Jul-08 16:37

SetSuspendState[^] API, or Application.SetSuspendState[^] in .NET.

Just wondering about the/any differences in this code?

LloydA1114-Jul-08 10:46

LloydA111

4-Jul-08 10:46

Hiya,
Its nothing important but I just wondered what the difference between this:

TextBox1.Text = ("Hello, World!")

and this is:

TextBox1.[Text] = "Hello, World!"

Thanks, Lloyd

Lloyd J. Atkinson

"Logic will get you from A to B, but imagination will take you everywhere" - ALbert Einstein

I look at Microsoft, and turn to my poster on the wall saying: "Bang head here in case of stress".

Re: Just wondering about the/any differences in this code?

jacobjordan4-Jul-08 12:03

jacobjordan

4-Jul-08 12:03

Absolutely no difference whatsoever.

Re: Just wondering about the/any differences in this code?

LloydA1114-Jul-08 12:04

LloydA111

4-Jul-08 12:04

Oh I see, so why are there two ways?

Re: Just wondering about the/any differences in this code?

Christian Graus4-Jul-08 12:07

Christian Graus

4-Jul-08 12:07

There really aren;t, that is, I've never seen anyone use that second syntax, anywhere.

Christian Graus

Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

Re: Just wondering about the/any differences in this code?

LloydA1114-Jul-08 13:15

LloydA111

4-Jul-08 13:15

Oh right

I just wondered thats all!

Re: Just wondering about the/any differences in this code?

supercat94-Jul-08 13:19

supercat9

4-Jul-08 13:19

In VB.net, it is necessary to enclose an identifier in brackets if (1) the identifier matches the name of a keyword, and (2) the identifier is used in a context where the keyword would be valid. Enclosing an identifier is harmless in any case (except, of course, when what one really wants is the keyword).

I would expect that some programmers habitually enclose in brackets identifiers that would be valid as keywords in any context, rather than try to worry about contexts where they might be mistaken as keywords.

As for the parentheses around the string literal, I see no particular reason for them. They're harmless, but pointless.

Re: Just wondering about the/any differences in this code?

LloydA1114-Jul-08 13:23

LloydA111

4-Jul-08 13:23

Oh ok

I just wanted to know because I was testing the Spices.Net decompiler for .Net and everytime it decompiled one of my projects it would put the [] around the .Text bit.

Form Multipanel

zagari4-Jul-08 9:24

zagari

4-Jul-08 9:24

Sorry,
i need to create an options form like word 2007
i've used in the left part a treeview control to choose the options cathegories but on the right part I want to insert more controls panels for each cathegory,
what is the control i have to use?
thanks.

Re: Form Multipanel

Christian Graus4-Jul-08 9:46

Christian Graus

4-Jul-08 9:46

Office uses all sorts of custom controls, you may have to write your own.

Christian Graus

Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

How to show desktop from an application

jacobjordan4-Jul-08 9:23

jacobjordan

4-Jul-08 9:23

I am working on a macro app. I need to know how to show the desktop from my application. I already have functions from the user32 and kernel32 that will do things like minimize windows, close windows, ect. Is there a function inside a windows dll that will show the desktop, or is there another way to do it? I have already tried to do something simple like

Shell("Show Desktop.scf")

And that failed miserably.

Re: How to show desktop from an application

Christian Graus4-Jul-08 9:46

Christian Graus

4-Jul-08 9:46

The desktop is shown by minimising all the windows, enumerating and minimising seems the best way to me.

Christian Graus

Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

Re: How to show desktop from an application

jzonthemtn4-Jul-08 9:46

jzonthemtn

4-Jul-08 9:46

Maybe something like this[^] would do the trick...?

Re: How to show desktop from an application

DaveyM694-Jul-08 10:34

DaveyM69

4-Jul-08 10:34

This is C# code but it should be easy to convert.

Shell32.ShellClass shell = new Shell32.ShellClass();
//IShellDispatch4 has the ToggleDesktop() method. http://msdn.microsoft.com/en-us/library/bb774122(VS.85).aspx
((Shell32.IShellDispatch4) shell).ToggleDesktop();

//Do your stuff here
System.Threading.Thread.Sleep(5000);

//Restore desktop
((Shell32.IShellDispatch4) shell).ToggleDesktop();

You'll need to add a reference to shell32.dll which is in the System32 folder in XP.

Dave

How to draw on an image

asteriskgr4-Jul-08 8:29

asteriskgr

4-Jul-08 8:29

Hello, I am beginner vb.net programmer from Greece. I would appriciate if someone could help where to search to find how can i draw on an immage on a form. For example to draw dots or simple lines on a specific image on a picture that is placed on a picture box and then save it in a database as an image. The only thing that i know is the database part.

Thx a lot for your time

Re: How to draw on an image

Christian Graus4-Jul-08 9:45

Christian Graus

4-Jul-08 9:45

You use the paint event to draw on your form, draw the bitmap first then draw on it. The Graphics object is what you need to research.

Christian Graus

Please read this if you don't understand the answer I've given you. If you're still stuck, ask me for more information.

Re: How to draw on an image

sa_runner7-Jul-08 4:14

sa_runner

7-Jul-08 4:14

Take a look at this link. It helped me alot with a graphics project that I'm working on.

http://www.informit.com/articles/printerfriendly.aspx?p=29477[^]

Data Gridview colume hiding

rajesh_ncc4-Jul-08 3:53

rajesh_ncc

4-Jul-08 3:53

Dear Friends,

I have developing a small project in vb.net. i used data gridview control to show the many employer detail row by row also i have done. data gridview it contain nearly more than 15 column.

Here i have to make a split up column like below
1. While using the vertical scroll my first column should be show remaining column go to behind of first column or hide. i have the employee id in first column at the same time i have the employee address in 10th column when use vertical scroll the first column will gone then i can't able to identify the employee address.

Can you tell me it is possible to do.
If it it is possible kindly provide the code.

Thanking You

K. Rajesh Kumar

i am a fresher in software development i have so many doubts in .net so i need to ca

Re: Data Gridview colume hiding

Rupesh Kumar Swami4-Jul-08 4:04

Rupesh Kumar Swami

4-Jul-08 4:04

use following statement
DataGridView1.Columns(0).Frozen = True

hope this helps

Rupesh Kumar Swami
Software Engineer,
Integrated Solution,
Bikaner (India)

My Company

vb6 adodc delete

Amit Battan Ror4-Jul-08 3:04

Amit Battan Ror

4-Jul-08 3:04

i am using following code in vb6

Private Sub cmdDelete_Click()
On Error GoTo DeleteErr
With datPrimaryRS.Recordset
.Delete
.MoveNext
If .EOF Then .MoveLast
End With
Exit Sub
DeleteErr:
MsgBox Err.Description
End Sub

but it give error:
Insufficient key column information for updating or refreshing.

it remove the data from datagrid but not from ms access database

please help me

battan20@gmail.com

Re: vb6 adodc delete

Vimalsoft(Pty) Ltd4-Jul-08 4:23

Vimalsoft(Pty) Ltd

4-Jul-08 4:23

hi Amit Battan Ror

Have you initiated a Development in vb6?

If so,VB6 its Dead incase you dont know. Try to learn C# or vb.net.If your Company is Still Planning to keep vb6 apps and you have to maintain them, start sending out your resume because you are going to kill your skills. Now lets get back to your error.To update a Database record.. the Server has to know exactly which record it is that you want to change.. ie. it needs a UNIQUE key of some kind to process the record. IF in your DataBase table you do NOT define a field as being unique, ADO will look at the data and then try to build a (temporary)UNIQUE key.. which then can be used to perform the update. Sometimes ADO
is successful in doing this.. and sometimes it is NOT (as witnessed by your present dilemna).The first thing you should do is go and check the Tables you are using to make sure that each of them has at least ONE unique field defined.. and if there is none.. add a Unique identifyling field (such as an Autonumber) to it.

Hope it helps

Vuyiswa Maseko,

Sorrow is Better than Laughter, it may Sadden your Face, but It sharpens your Understanding

VB.NET/SQL7/2000/2005
http://vuyiswamb.007ihost.com
http://Ecadre.007ihost.com
vuyiswam@tshwane.gov.za

Re: vb6 adodc delete

Vimalsoft(Pty) Ltd9-Jul-08 4:54

Vimalsoft(Pty) Ltd

9-Jul-08 4:54

Go to the table that you want to Update and make sure that there is a Primary_key, What database are you using?, Send me a Structure and will help you.

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