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  • Users: DF
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  1. DF

    Opening Access problem

    I am receiving the following error when trying to open a connection to an Access data base. "Run Time Error 3706 Provider Can't be found. It may not be properly installed. SC = "Provider=microsoft.jet.oledb.4.0; Data source = mydb.mdb;persist security info=false" Dim Cn as...
  2. DF

    Why won't it work? - modem with mscomm

    Make sure inbuffersize is not set to 0 Try Chr$(10) instead of chr$(13)
  3. DF

    Mathematical Equations

    I'm looking for curve fitting routines. Particularly least squared algorithms. Does anyone know where I can get code to run curve fitting algorithms?<br> <br> <br> Thanks,<br> <br> DF
  4. DF

    Shell Function

    I want to start another program with my VB app and I want the file to be minimized with no focus. <br> <br> I am using the following code:<br> Dim retval<br> retval = shell(&quot;C:\windows\calc.exe&quot;,vbminimizednofocus)<br> <br> This executes the windows calculator but it remains on top of...
  5. DF

    parallel port communication

    An associate had to write an exe program in c++ and I used the winsock control in VB to send commands through the parrallel port. I couldn't write my self out of a do loop in c++, so I don't know the details behind the code.
  6. DF

    How to use delay in Visual Basic

    I use the Sleep command when I need to enter a known delay in msec. i.e. Sleep(10)
  7. DF

    Opening two Comm Ports

    Turned out to be an IRQ conflict. I didn't realize the Serial card had jumpers to set the IRQ. No Plug and Play here!<br> <br> Df
  8. DF

    Opening two Comm Ports

    When I try to open a second comm port for communication I get a run time error "8012 the port is not open" I can open each comm port individually, but can't open both at <br> the same time. I'm running Windows NT. I was able to open two commports at home using Windows 98. Is there something I...
  9. DF

    Parrallel Port Control

    Does anyone know how to send data to the parrallel port. I'm trying to send a HEX # i.e. 0x11 through the parrallel port. I believe the command outp() is used in Labview C language. <br> <br> <br> Thanks in advance,<br> <br> DF
  10. DF

    Chart Control

    I'm using MSChart to plot one point at a time (as I collect it over a GPIB bus) Each time I plot the data point the whole chart refreshes. Since I'm plotting approximately 10 points a second the chart area appears to be blinking and looks very unsightly. Is there a better way to actively graph...
  11. DF

    MSComm Communication Slow

    I,m communicating with an external device via Comm1 using VB6. When I request information from the device, it returns it slowly (~5sec). When I use Hyperterminal to send the same command the response is instantaneous. The port settings and handshaking are set correctly at 57600,n,8,1 and...

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