Adventures in programming: Treeviews, directory scanning, recursion

[sinsi]

The sequence of events I wrote in pseudocode above should give you a good idea of what's happening in the program:

So now you can read my mind?

Progress bar and "Waiting:" text appear

What, like magic?

That's pretty much it. What else can I tell you?

Don't tell me, show me

[TimoVJL]

Use OutputDebugString with variables to see, what really happens.

[NoCforMe]

Use OutputDebugString with variables to see, what really happens.

Oh, I can do better than that with my LogBuddy®© logging accessory. Shows incoming messages to window procs, displays variable values.

[NoCforMe]

I went ahead and plugged my pic viewer into LogBuddy (specifically, the subclassed window proc for the progress bar), and here's what it gave me:

Code Select Expand

Message: WM_GETDLGCODE hWin: 10484h, wParam: 0h, lParam: 0h
Message: WM_SHOWWINDOW hWin: 10484h, wParam: 1h, lParam: 0h
Message: WM_WINDOWPOSCHANGING hWin: 10484h, new X: 0, new Y: 0
Message: WM_NCPAINT hWin: 10484h, wParam: 1h, lParam: 0h
Message: WM_ERASEBKGND hWin: 10484h, wParam: 29010CBEh, lParam: 0h
Message: WM_WINDOWPOSCHANGED hWin: 10484h, new X: 165, new Y: 9
Message: (Unknown: value = 1034) hWin: 10484h, wParam: 1h, lParam: 64h
Message: WM_PAINT hWin: 10484h, wParam: 0h, lParam: 0h
Message: (Unknown: value = 1034) hWin: 10484h, wParam: 0h, lParam: 0h
Message: WM_SHOWWINDOW hWin: 10484h, wParam: 0h, lParam: 0h
Message: WM_WINDOWPOSCHANGING hWin: 10484h, new X: 0, new Y: 0
Message: WM_WINDOWPOSCHANGED hWin: 10484h, new X: 165, new Y: 9
Message: WM_GETDLGCODE hWin: 10484h, wParam: 0h, lParam: 0h
That was it for one long disk scan during which the progress bar was put up.

I wonder what that "unknown" (to me) message (1034 decimal) is? Welll, according to this page, it could be any of these:

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040a        1034        CBEM_HASEDITCHANGED
040a        1034        RB_INSERTBANDW
040a        1034        SB_GETRECT
040a        1034        TB_ISBUTTONCHECKED
040a        1034        TBM_SETSEL
040a        1034        TTM_HITTESTA
040a        1034        WIZ_QUERYNUMPAGES

Seems like I should be getting a lot more messages than these.

[NoCforMe]

Message 1034 is just PBM_SETMARQUEE (makes sense), according to this useful page.

[zedd151]

Before WM_PAINT, wParam is 1, lParam 100
After WM_PAINT, wParam 0 and lParam 0...

Hmmm.... it's been a long time that I worked with progress bars...
But that doesn't look right.

The static progress bar, any indicators 'lit up' or just showing the bar and nothing else.

[NoCforMe]

The progress bar shows nothing. Completely blank.

For WM_PAINT, neither wParam nor lParam are used. (All the needed info is in the PAINTSTRUCT structure that's filled out by BeginPaint().)

[zedd151]

The progress bar shows nothing. Completely blank.

For WM_PAINT, neither wParam nor lParam are used. (All the needed info is in the PAINTSTRUCT structure that's filled out by BeginPaint().)

quote from stack overflow

One final hunch at why your marquee progress bar is not working. Did you include a manifest for common controls v6? The marquee style is only supported in common controls v6 and up.

manifest issue? Just a shot in the dark on my part...

[NoCforMe]

I have that manifest, so no.

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  <?xml version="1.0" encoding="UTF-8" standalone="yes" ?>
- <assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0">
  <assemblyIdentity version="1.0.0.0" processorArchitecture="*" name="FearNoEvil.DialogGen.1.0" type="win32" />
  <description />
- <dependency>
- <dependentAssembly>
  <assemblyIdentity type="win32" name="Microsoft.Windows.Common-Controls" version="6.0.0.0" processorArchitecture="*" publicKeyToken="6595b64144ccf1df" language="*" />
  </dependentAssembly>
  </dependency>
  </assembly>

God, I hate XML ...

[zedd151]

from codeguru

[NoCforMe]

Thanks. Read that a long time ago, along with pretty much every other article on Stack Overflow and elsewhere. No help.

[zedd151]

It is probably something simple but overlooked.
Have you tried making a test program? A simple window and only the progress bar?

I gotta go walk the dogs, I might make a little test proggy myself when I get back...


Later:
I got shanghai'd into doing something else... I'll look at making a test program later this evening...

[jj2007]

No help

It worked for me, see attached exe

[NoCforMe]

Your does work indeed. But Jochen, do you have a separate thread running in that program? That seems to be the source of my problems.

[jj2007]

do you have a separate thread running in that program?

No, but a WM_TIMER handler:

Code Select Expand

  GuiControl Progress, "progressbar", y0+88, h0+29, w700, style PBS_MARQUEE
...
Event Timer
  sub rv(GetTickCount), ticks
  invoke SendMessage, hProgress, PBM_SETPOS, eax, 0
  SetWin$ hTimeMs=fTime$(0, "HH:mm:ss.fff") ; shows milliseconds

Event Message
  .if uMsg_==WM_HSCROLL ; horizontal trackbar sends this message
mov eax, lParam_
.if eax==hTrack
mov ticks, rv(GetTickCount) ; try to sync with progressbar ;-)
shl rv(SendMessage, lParam_, TBM_GETPOS, 0, 0), 9
sub ticks, eax
.endif