How to print a transparency Picture - Visual Basic Discussion Boards

How can i make Demo(Trial) for Deployment program ?, i mean how can i determine a period so the program will not be accessible after the period expired?

All sorts of ways. They all have a few things in common - they need to store a time stamp, and that stamp needs to be hidden and left behind if the program is removed.

Oh, and because you're using .NET, they are all a waste of time, anyone can decompile your code and remove the section that enforces the demo.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Christian Graus wrote:
Oh, and because you're using .NET, they are all a waste of time, anyone can decompile your code and remove the section that enforces the demo.

As a sidebar - your thoughts on obfuscation?
I've read a few articles on it but never bothered putting into practice.

My app supports a piece of hardware, so I've never bothered. But, I think it's a good idea, I really should be doing it, too.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Can I use the registry to solve this problem ?
If yes please tell me how?

I mean, if I save a value in a register and update it on time(ex. Hour,Minute),and when we reache to specific value the program will not be accessible.

You can, sure. You can store the date the program is first run, and every time you run the program, load that date, and check how many days ago it was.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Hello!

I'm using vb.net with net 2.0.

Is there a way to play a midi sound file with a predefined tempo? I would like to make it possible for the user to adjust the tempo of a midi song.

I have a project, where I print my invoice with code like this:

<br />
    With Printer<br />
        .PaperSize = Papier: .ScaleMode = 6: .Orientation = Ausricht<br />
        .CurrentY = RandOben<br />
        .FontSize = 10<br />
        If UCase(frmAdressverwaltung.txtNName.Text) = "BARVERKAUF" Then<br />
            Zeile = ""<br />
            For i = 1 To 6<br />
                Printer.Print Zeile<br />
            Next i<br />
        Else<br />
            If frmAdressverwaltung.optAnredeF.Value = True Then<br />
                Zeile = "Frau"<br />
            ElseIf frmAdressverwaltung.optAnredeH.Value = True Then<br />
                Zeile = "Herr"<br />
            ElseIf frmAdressverwaltung.optAnredeK.Value = True Then<br />
                Zeile = ""<br />
            ElseIf frmAdressverwaltung.optAnredeC.Value = True Then<br />
                Zeile = "Firma"<br />
            End If<br />
            Zeile = Zeile & " " & frmAdressverwaltung.txtTitel.Text<br />
            .CurrentX = Randlinks<br />
            Printer.Print Zeile<br />
            .FontBold = True<br />
            .CurrentX = Randlinks<br />
            Zeile = frmAdressverwaltung.txtNName.Text & " " & frmAdressverwaltung.txtVName.Text<br />
            Printer.Print Zeile<br />
            .FontBold = False<br />
            Zeile = frmAdressverwaltung.txtStrasse.Text<br />
            .CurrentX = Randlinks<br />
            Printer.Print Zeile<br />
            Printer.Print ""<br />
            Zeile = frmAdressverwaltung.txtPLZ & " " & frmAdressverwaltung.txtOrt.Text<br />
            .CurrentX = Randlinks<br />
            Printer.Print Zeile<br />
            Printer.Print ""<br />
        End If<br />

The code goes over 100 lines in this way. - So I don't want to change the code. - Now I want to print also the logo and some text on tho the invoice
It is a bmp File with the logo & text & the rest ist transparency - I tried to this with the following code:

<br />
If GetSetting("VOPTNeu", "Firmendaten", "ReLogo") = "True" Then<br />
            .PaintPicture LoadPicture(App.Path & "\rechnungslogo.bmp"), 2, 3, 130, 35<br />
            .CurrentY = 52<br />
            .CurrentX = Randlinks<br />
        End If<br />

But this wan't work.
Please help - Hope you understand what I mean.

Yours faithfully

Hi Guys,

Quick question.

How can i apply say Silver theme to my app while xp is using blue?

I've seen this done but don't remember where or how. Frown | :(

Plz help

The perfect code is always in your head...it just a matter of how hard you bang your head against the wall to get it out!

You'd have to owner draw stuff, I guess, then you can draw it any way you like.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Christian is right. You'd have to ownerdraw everything yourself. Applications cannot use one system theme and the system use another at the same time. You have to do all the drawing work yourself.

Dave Kreskowiak
Microsoft MVP - Visual Basic

I was kinda hopping to avoid that...no time.

Thanks for your time guys

The perfect code is always in your head...it just a matter of how hard you bang your head against the wall to get it out!

Hi Guys,

I hope everyone is well and filled with caffeine...I know i'm Laugh | :laugh:

I've read in one of the posts here recently that it's not a good idea to keep the code that does not run the ui inside the form and usercontrol classes as it will run on the same thread as the ui and slow down the app. Which does make a lot of sence D'Oh! | :doh:

Not that it makes much difference but I have all my code in dll's and for processing purposes the forms only call dll functions, anything ui related is kept inside the form modules and usercontrol classes.

So

What's the syntax to start a new thread and run specific code on it?

Also

Do I need to keep track of the threads, if so how?

Finally, as far as canceling of currently running code is concerned

How do I handle threads, and cancel code running on them?

The perfect code is always in your head...it just a matter of how hard you bang your head against the wall to get it out!

Alex Feature wrote:
it's not a good idea to keep the code that does not run the ui inside the form and usercontrol classes

Correct, your business logic should be seperate from presentation logic.

Alex Feature wrote:
as it will run on the same thread as the ui and slow down the app.

No, you can put code in the UI layer that runs in another thread, and moving code out to a middle tier won't change it being in the same thread.

Alex Feature wrote:
What's the syntax to start a new thread and run specific code on it?

ThreadStart and Thread are the two classes you need.

Sounds to me like you need to google threading in VB.NET and read some articles.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Thanks Christian.

NOW! Where is that damn coffe pot...I got some catching up to do! OMG | :OMG:

The perfect code is always in your head...it just a matter of how hard you bang your head against the wall to get it out!

hi,

how to check whether duplicate values are present in a dataset.i have to check whether the combination of 2 fields in the dataset does not repeat.for eg.name and rollno.
i have done it using For loop.if anyother way pls help me.

You'd do better to set constraints on your data source so this can't ever happen.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

Hi guys

I want to set Internet Explorer Printer Page Setup options Paper Source, Size etc. programatically, kindly help me in this regard.

Thanx in advance.

I am still a little new to vb.net and I tried to print to the printer like I did in vb6 and it has changed I have done some research on this and found some tutorials but with no luck on what I am looking for. An ex. of the code would be like Printer.Print "Whatever" but when i go Printer.Print("Whatever") it gives me an error message. If someone could help me out with this I would really appreciate it. Thank You for you time.

B.

Bso_Cool wrote:
I have done some research on this and found some tutorials but with no luck on what I am looking for.

Looks[^] to me like there are lots of tutorials.

Bso_Cool wrote:
but when i go Printer.Print("Whatever") it gives me an error message.

I guess that's why no tutorials tell you to do this, it's changed from VB6.

I suggest following any of the tutorials I brought up with google, or asking a more specific question about the nature of what you want to print.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

I want to drag Image and Image will follow cursor until we drop it.
Such as we drop it in Panel Area

(Like when you drag "Textbox" Control and Place to Designing Form in Visual Studio)

I do it and have problem with Mouse Position
I don't find Cursor Location when I over Panel Area

I use VB.NET 2005

The easiest way to do this is to draw the image yourself on the screen, no picture box. If you want to do drag and drop, impliment it as drag n drop ( that is, use the messages provided by the framework ), and set the cursor of the controls you can drag over, including the main window, to be one you create of the image in question.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

hi i placed 2 richtextboxes and one button on a form
1st richtextbox named "result"
2nd richtextbox named "text1"

i want when i click on button,then it search the word "abcd" in text1.text, if found then write result.text in text1.text in second line("abcd" may be in any line)
so i coded on button :

If InStr(Text1.Text, "abcd") Then
text1.Text = text1.Text + InStr(text1.Text, "abcd") & Microsoft.VisualBasic.ChrW(13) + result.Text
End If

but it gives error that

An unhandled exception of type 'System.InvalidCastException' occurred in microsoft.visualbasic.dll

Additional information: Cast from string "abcd" to type 'Double' is not valid.

Are you sure that the error message comes from the code that you have shown? The only thing that seems relevant in the error message is the string "abcd", unless of course if you created your own InStr function.

---
b { font-weight: normal; }

the error comes from the code that i shown.
see this screenshot(below)

http://img287.imageshack.us/my.php?image=erroruo0.jpg[^]

can someone tell the solution???? Cool | :cool: