C / C++ / MFC

Problems with DDK in W2000

6-Oct-03 5:14

Use GetModuleFileName(NULL, ...).

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

JussiL6-Oct-03 4:56

JussiL

6-Oct-03 4:56

Hi,

I'm having problems with the UpdateDriverForPlugAndPlayDevices() service in the DDK. For example the driver installation sample \2600.1106\src\setup\install works fine in WinXP Pro and the output is (xxx = correct hw id):

<br />
  ...<br />
  Found! [xxx]<br />
  Driver Installed successfully.<br />

But in W2000 SP3 it fails:

<br />
  ...<br />
  Found! [xxx]<br />
  UpdateDriverForPlugAndPlayDevices FAILURE: (0xe0000203)<br />

So it finds the device matching the given hardware id but fails to install the drivers. That error code means ERROR_NO_DRIVER_SELECTED but this information doesn't help much. What could be causing this behavior?

According to the DDK documentation this feature should be supported in ME, 2000 and XP but I'm able to use it only in XP Pro and Home. I compile with VC++6.0EE in Win Xp Pro.

- Jussi

Thread Dialog Box

Anthony98876-Oct-03 4:49

Anthony9887

6-Oct-03 4:49

I created a COM dll and inside one of the methods I create a thread(A) that creates a modeless dialog and a second thread(B)(Not from Thread A) that does some background work. My question is whenever I try to cancel(DestroyWindow()) the dialog I get an assertion error, I assuming it has to do with the second thread(B) updating the dialog box controls. I tried killing the threads(A and B), but still the same problem. I'm using AfxBeginThread and AfxEndThread. Is this approach good as I described above, or is there a better way of doing this.

Thanks

Re: Thread Dialog Box

David Crow6-Oct-03 5:13

Re: Dialog editor in VS.NET

6-Oct-03 5:13

What is the assertion?

Thread B should NOT be updating anything that belongs to thread A. At most, thread B should post a message to thread A. Read these two articles for thread communication:

http://www.flounder.com/uithreads.htm
http://www.flounder.com/workerthreads.htm

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

Re: Thread Dialog Box

KaЯl6-Oct-03 7:22

KaЯl

6-Oct-03 7:22

DavidCrow wrote:
Thread B should NOT be updating anything that belongs to thread A
Unless these data are protected, with a mutex, for example.

New, what do you own the world?
How do you own disorder?

Dialog editor in VS.NET

Adam °Wimsatt6-Oct-03 4:41

Adam °Wimsatt

6-Oct-03 4:41

How can I get a simple line onto my dialog? I want a line just like HTML's [hr] tag.

Also, any links to tutorials on using the VS.NET dialog editor would be much appreciated.

Thanks,
Adam

My code isn't buggy. Those are all fleatures.

Mike Dimmick6-Oct-03 23:58

Mike Dimmick

6-Oct-03 23:58

One way I've found is to create a button that's one dialog unit in height. Normally the dialog editor won't let you create a button this small, but you can press Alt while dragging to override its minimum size requirements (VC 6, eVC 3 - not attempted in VS.NET).

Re: Dialog editor in VS.NET

Adam °Wimsatt7-Oct-03 4:29

Adam °Wimsatt

7-Oct-03 4:29

That did the trick! Thanks!

My code isn't buggy. Those are all fleatures.

CListCtrl Image Update

CanopenR6-Oct-03 4:37

CanopenR

6-Oct-03 4:37

I want to update a list control (that already contain images) and change the image from x to y.

Can I do that without delete the item and insert new with the y image.

Can someone help with this?

CanopenR
CanopenR@dtu.cc

Re: CListCtrl Image Update

David Crow6-Oct-03 4:41

Re: CListCtrl Image Update

6-Oct-03 4:41

LVITEM lvi;
lvi.mask   = LVIF_IMAGE;
lvi.iImage = ?????;
SetItem(&lvi);

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

CanopenR6-Oct-03 10:33

CanopenR

6-Oct-03 10:33

Thank you, it worked liek a charm, after i filled it...

CanopenR

height font to print

@LX6-Oct-03 4:29

@LX

6-Oct-03 4:29

Hi everybody

I found an expression to print the real height of a font

-MulDiv(font.GetHeight(),GetDeviceCaps(GetDC()->GetSafeHdc(),LOGPIXELSY),72));

but when I print a text, the font height is not the real height, is smaller. I compare it with microsoft word height font.

The question is, What can I do to print the real height font?

Steve S6-Oct-03 4:56

Steve S

6-Oct-03 4:56

This is a method in a CWnd derived class, I guess.
The call to GetDC() is getting the DC of the window, not the DC of the printer, so you need to use that HDC instead.

If you're using MFC Document/View, then a CDC* is passed into OnBeginPrinting(), and you can plug that in, in place of GetDC() in your code.

Incidentally, are you doing a corresponding call to ReleaseDC() somewhere?

Steve S

@LX6-Oct-03 5:04

@LX

6-Oct-03 5:04

Yes, I use MFC document/view, and I use the CDC* passed into OnPrint(), GetDeviceCaps(pDC->GetSafeHdc(),LOGPIXELSY), but doesn't work.

Steve S6-Oct-03 5:12

Steve S

6-Oct-03 5:12

OK, then in that case, when you say it's the wrong height, what exactly does that mean?

Here are some examples;

(a) the text is slightly smaller than the same text in Word

(b) The text is slightly larger than the same text in Word

(c) the text is way too small to read

(d) /* other option here! */

If (c), it's a mapping mode/device resolution issue.
If (a) or (b), then the definition of height is important.
Height = ascent+descent, with leading added between subsequent lines.

Steve S

@LX6-Oct-03 5:28

@LX

6-Oct-03 5:28

for example in arial facefont

Word 12 points = 3mm height
My application 12 points = less than 1mm height

word 28 points = 7mm height
my application 28 points = 2mm height

I use MM_TEXT mapmode, so if you tell me

MulDiv(fh,72,GetDeviceCaps(pDC->GetSafeHdc(),LOGPIXELSY));

this function is the way to print the real height font, then I try found an error in my source code, I just want be sure about this function.

Thankyou!!

Function IsDestinationReachable

Steve S6-Oct-03 7:03

Steve S

6-Oct-03 7:03

Ah. That explains it.

try

-MulDiv( fh, pDC->GetDeviceCaps(LOGPIXELSY), 72)

instead. I realised while I was driving home from the office that you have the params to MulDiv in the wrong order.

MulDiv(x,y,z) = (x*y)/z,

and font height in points is

(ht * dpi) / pts_per_inch

not

(ht * pts_per_inch) / dpi

Steve S

Alan Martinis6-Oct-03 3:26

Alan Martinis

6-Oct-03 3:26

Can someone help me using function "IsDestinationReachable".

When I try to build my application, I got folowing error message:
OPFB error LNK2019: unresolved external symbol _IsDestinationReachableA@8 referenced in function "public: virtual int __thiscall MYPRGApp::InitInstance(void)" (?InitInstance@COPFBApp@@UAEHXZ)

If someone have some code examle how to use this function, please send me.
I include "Sensapi.h" and use library "Sensapi.lib".

Thank yoou !

includeh106-Oct-03 4:11

includeh10

6-Oct-03 4:11

u need have dll linked.
from help to find which dll file associated with the function.

includeh10

David Crow6-Oct-03 4:36

6-Oct-03 4:36

It's as simple as that. I don't know what else you've got in place that is causing this linker error. If I omit the Sensapi.lib, I get an LNK2001 error.

I was unable to find LNK2019. Is this a .NET project?

Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?

Alan Martinis6-Oct-03 4:57

Alan Martinis

6-Oct-03 4:57

Can you show me how (few lines) including how to create some LPQOCINFO ?

This is my source part that generate this error.
if ( IsDestinationReachable("www.google.com", NULL) == TRUE)
AfxMessageBox("Google ok !");

David Crow6-Oct-03 5:10