Windows Service - need Windows.Forms.A pplication.DoEv ent() equiv

[James Dixon]

I have created a windows service in C#, .net framework 1.1

The service makes a web request using the
mshtml.HTMLDocu ment.CreateDocu mentFromURL() function

Because this is not using Windows.Forms, I can't use the
Application.DoE vents() function while the request is completing. Is there
an equivilent function (call the CreateDocumentF romURL from a seperate
thread and spin it until Document.readyS tate != "complete"?

Or just use Windows Forms namespace to access the Application object?

thanks

[Elp]

On Tue, 15 Feb 2005 08:22:40 -0500, James Dixon wrote:

I have created a windows service in C#, .net framework 1.1

The service makes a web request using the
mshtml.HTMLDocu ment.CreateDocu mentFromURL() function

Because this is not using Windows.Forms, I can't use the
Application.DoE vents() function while the request is completing.
Why do you need to call DoEvents from a Windows Service? All that DoEvent
does is to tell your application's Windows to process events from the
message loop (those events can be eg Repaint Window or Move Window). In a
windows service you have no user interface, no windows and no message loop
so DoEvents won't do anything.
Is there
an equivilent function (call the CreateDocumentF romURL from a seperate
thread and spin it until Document.readyS tate != "complete"?

You could maybe precise a bit more what you are trying to achieve. I don't
see the point of launching a new thread and then simply loop until this
thread has finished its job. Use threads only if you need to do several
things in parallel.

[James Dixon]

I didn't know if the HTMLDocument needs some kind of external notification
to finish
so I'll just do this:
while (objDocument.re adyState != "complete")

{

// Application.DoE vents();

}
and when it is done looping, I can start parsing the doc
I'll let you know if it works

thanks
"Elp" <ro********@REM OVEME.hotmail.c om> wrote in message
news:1e******** *************** *******@40tude. net...

On Tue, 15 Feb 2005 08:22:40 -0500, James Dixon wrote:

I have created a windows service in C#, .net framework 1.1

The service makes a web request using the
mshtml.HTMLDocu ment.CreateDocu mentFromURL() function

Because this is not using Windows.Forms, I can't use the
Application.DoE vents() function while the request is completing.

Why do you need to call DoEvents from a Windows Service? All that DoEvent
does is to tell your application's Windows to process events from the
message loop (those events can be eg Repaint Window or Move Window). In a
windows service you have no user interface, no windows and no message loop
so DoEvents won't do anything.

Is there
an equivilent function (call the CreateDocumentF romURL from a seperate
thread and spin it until Document.readyS tate != "complete"?

You could maybe precise a bit more what you are trying to achieve. I don't
see the point of launching a new thread and then simply loop until this
thread has finished its job. Use threads only if you need to do several
things in parallel.

[jbeyer]

Elp,

I came across your post through a Google search. I am trying to create a Windows Service that generates keystrokes, namely, a PrtScr keystroke.
I came across the following code to do so:
'The second parameter (bScan) determines what
'to copy... passing 0& copies the screen or
'passing 1& copies the active form.
keybd_event vbKeySnapshot, 0&, 0&, 0&

'pause to let Windows update the clipboard
DoEvents

'retrieve the clipboard bitmap to the control
Image1.Picture = Clipboard.GetDa ta(vbCFBitmap)

The DoEvents command is not available in my service, and without it, the keystroke doesn't seem to be absorbed by Windows.
Do you have any suggestions? Pardon my naivety, I'm a complete newbie to VB.

Cheers,
Jon

On Tue, 15 Feb 2005 08:22:40 -0500, James Dixon wrote:
[color=blue]
> I have created a windows service in C#, .net framework 1.1
>
> The service makes a web request using the
> mshtml.HTMLDocu ment.CreateDocu mentFromURL() function
>
> Because this is not using Windows.Forms, I can't use the
> Application.DoE vents() function while the request is completing.[/color]

Why do you need to call DoEvents from a Windows Service? All that DoEvent
does is to tell your application's Windows to process events from the
message loop (those events can be eg Repaint Window or Move Window). In a
windows service you have no user interface, no windows and no message loop
so DoEvents won't do anything.
[color=blue]
> Is there
> an equivilent function (call the CreateDocumentF romURL from a seperate
> thread and spin it until Document.readyS tate != "complete"?[/color]

You could maybe precise a bit more what you are trying to achieve. I don't
see the point of launching a new thread and then simply loop until this
thread has finished its job. Use threads only if you need to do several
things in parallel.