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Thanks! I wasn't aware of the security changes.

I get the same thing. That is weird.

Have you put the printer in DUMP mode and checked to see if anything is making it to the printer? ZPL or EPL?

I hope I grabbed the right project.147005

Glad I could help. I know I fought with the same issue for a while. Then the light bulb went off on creating separate read/write ports as well as threading. Like I noted... debug it on your own. I...

This version has the threading with 2 ports. 1 for read... 1 for write. I didn't comment a whole lot... just step through the code.... It's basic stuff.

124785

If I get a chance, I will clean up and wrap up the newest project. I've learned that unless your stream includes a terminating character, there is no "END" of a USB stream. Using a while loop around...

There was a bit of residual graphics code that I failed to remove. I was using an integer variable to count the number of graphics that were stored in the printer. This code had a specific function...

Not a problem. I hope it works for you.

Let me know if this basic app helps you out.

122649

Because I have incorporated this into an application used in-house.... give me a few and I'll make a simple generic app that allows you to type in the text you want to send to the printer and have...

After further review.... I'm not sure how I missed this.... I did have this function within the Designer Code... it was just Malformed..... now it's all good.


Protected Overrides Function...

I've been working with a custom listview that includes Custom Colors for the column headers and a transparent background for the rest. At runtime, I have no issues with colors or transparency. My...

Ok. I got it. I suppose I should have just copied the whole C# source and converted it to VB.Net... but I didn't want everything in it. The original C# code is here... ObjectListView

Imports...

Ok... so In order to get the exact list from Listview.... without coding my own Edit Items, Edit Columns... etc... I had to do a Type Hack because ListViewDesigner is "Friend".

Only issue I'm...

Due to the fact that I have many applications using ListViews and we already have code to populate them, I want to customize the listview with some new color schemes through it's painting events...

without actually testing with code... does this do anything?

For Each link As HtmlNode In doc.DocumentNode.SelectNodes("//dl[@class='Information']//dt|//dd")

adding the | in between the //dt...

drag a button to the form...double click it... on Click event do Me.Validate... remove the textbox1 textchanged routine.

dday9 gave you some more up to date code. also included a button event.

lblValue is a label control that I put on the form to display the value of the Square Root. You can replace that with whatever control you are using to display the value.

Very quick throw together...



Private Sub TextBox1_TextChanged(ByVal sender As System.Object, ByVal e As System.EventArgs) Handles TextBox1.TextChanged
Me.Validate()
End Sub

...

FOUND IT... Duh... :rolleyes: I was disposing the graphics object at the end.... this bombed with e.graphics. This works.




Public Sub New()

InitializeComponent()
...

The Try Catch was code I kinda left behind when I was initially going through and fixing code errors.. I agree that I can remove that

The CreateGraphics is the only way to do my custom painting....

Create a new class in your project... replace with this code. Rebuild.... you'll now have a new Hexbutton control. Drag it to your form. It shows as a Hex Button. There still needs to be some...

Another note... after selecting the GroupBox control in design time... and hovering over the edge of the control, it displays. When unselected, it intermittently displays and vanishes.

I'm having an issue when I enable Double Buffer. If this is set true in the "New" constructor, the design time display of the control is "invisible". If I remove the DoubleBuffer style, it displays...

I finally had some success....

After reading this.... http://msdn.microsoft.com/en-us/library/windows/hardware/ff545972%28v=vs.85%29.aspx

I gave it a try.... and it works! After adding that to...

I hate "bumping" threads, but I'm still at a loss with this. Anybody have BiDirectional USB experience?

I've tried lots of them

'\\?\usb#vid_0a5f&pid_0088&mi_00#7&B329F6&0&USB004#{36fc9e60-c465-11cf-8056-444553540000}
'USBPRINT\ZEBRA_TECHNOLOGIESZTC_GX430T\7&B329F6&0&USB004...

It's actually a USB printer and part of the Printing "area". SerialPort requires that it be a "COM" port, but Windows sees it as USB004. I've tried putting the full path.......

Interesting. What I really would like to do is go direct to the printer. While watching the spooler, if I'm in the Zdesigner setup program and looking at direct communications window, I can send...

http://msdn.microsoft.com/en-us/library/windows/desktop/dd162895(v=vs.85).aspx

This shows the actual signature for ReadPrinter. Maybe I need it to be an intPtr and do a string conversion for that?

I've tried initializing the dwCount to 0 and dwBytesRead to 1 as you suggested.... No dice. As a matter of fact, I do not get an error.... and dwBytesRead stays as a 1.

I also changed the...

I failed to include the ReadFromPrinter function... that is what is called. Then ReadPrinter..

Here's the whole class...

I was re-opening the printer using the Name string. Then I tried...

Has anyone worked with Bi-Directional USB communications? Regardless if it's a printer or not? What about something like a USB Monitor?

The primary issue that I'm having is reading a response on the USB port for a Zebra Printer. I have successfully used the winspool.drv invocation to write to the printer and I see the communications...

Dim sess As New InTheHand.WindowsMobile.PocketOutlook.OutlookSession
Dim smsAcc As SmsAccount = sess.SmsAccount
Dim smsFdr As SmsMessageFolder
smsFdr =...