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08-Apr-2020 14:50

The following code works as you might hope: Public Class Form1 Private m Canceling As Boolean = False Private Sub Button1_Click(By Val sender As System. -- Terry "Al Reid" wrote: Ok, I remember now, you are using a modal msgbox in your validation code. If you were using an errorprovider, then the error would be set, the focus would be returned to the textbox, the form closing event would then fire and it changes the cancel flag to false and the form closes. I reprogrammed the device to only send the CR and now the problem is solved. I have come to the belief that the problem we are seeing with the escape key is a bug. Cancel = True End If End If End Sub Private Sub Button1_Click(By Val sender As System. I just don't know what key code combination could direct focus to a text box control that should never receive focus since the Tab Stop property is false and there is no other code that sets focus to the textbox. Also in the docs on Key Down there is a mention of "Is Input Key" which I will have to look into. Hi Al, Don't know if you have been following the thread I started about the escape key "bug", but if you search this community for "Cancel Button vs Escape Key", you can see the result including the work around for the escape key. -- Al Reid (who didn't mean to hijack the thread) "Terry" Well it works for me - but one thing I left out - you need to set the cancel buttons 'causes validation' to false. The gun was putting out a LF after the CR and in the Key Down event it showed up as a Keys. Validating If Not mbln Cancel Then Dim dte Date As Date Time If Date Time. I am new to VB comming from VB6, but that was also the case in VB6. I tried to recreate what I did yesterday and ended up having the same problem you are having! Why it would stop on a textbox with tabstop property set to False - I have no idea, unless it is a behavior of the container its in. Maybe you should be using the Key Down event instead of the Key Press event. here is a line copied from the documentation: "The Key Press event is not raised by noncharacter keys; however, the noncharacter keys do raise the Key Down and Key Up events." My guess is that the gun is sending some noncharacter data to you. Close() End Sub Private Sub Text Box1_Validating(By Val sender As Object, By Val e As System. The code to tell if the cancel button has been clicked is: /////// Public Declare Function Window From Point Lib "user32" (By Val p As POINTAPI) As Int Ptr Public Structure POINTAPI Dim X As Integer Dim Y As Integer End Structure Private Function Cancel Button Clicked() As Boolean Dim p As New POINTAPI p. Also in the docs on Key Down there is a mention of "Is Input Key" which I will have to look into. -- Terry Well, I finally solved the barcode scanner problem. Cancel = True End If End If End Sub Private Sub Button1_Click(By Val sender As System. I just don't know what key code combination could direct focus to a text box control that should never receive focus since the Tab Stop property is false and there is no other code that sets focus to the textbox. Maybe you should be using the Key Down event instead of the Key Press event. here is a line copied from the documentation: "The Key Press event is not raised by noncharacter keys; however, the noncharacter keys do raise the Key Down and Key Up events." My guess is that the gun is sending some noncharacter data to you. -- Al Reid "Terry" Hi Al, Nearly 40 years for me since my first college FORTRAN IV class! Well, one of the keys you would not see in either the keypress or keydown events is the tab key, which of course will move the focus.

vb validating textbox-72

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NET The code will be added to the Text Box Key Press event.

If I hit the escape, the validation event fires and since the m Canceling is not True, the validation error gets displayed before the form closes. As far as the 'gun', it may be better to write a console app. -- Terry "Al Reid" wrote: Terry, I guess we have a similar background. I don't do anything with the barcode data in the Key Press event. I guess I could inspect the data in the Key Down event to see if there is a difference. -- Al Reid "Terry" Hi again Al, On the barcode reader problem. -- Al Reid "Terry" Hi Al, Nearly 40 years for me since my first college FORTRAN IV class! Well, one of the keys you would not see in either the keypress or keydown events is the tab key, which of course will move the focus.