WinUSB and SetupAPI from Visual Basic Studio 2008 - C / C++ / MFC Discussion Boards

Will-O28-Oct-09 5:18

28-Oct-09 5:18

Hello

Is there anyway to force the background of a dialog to be visible? For some reason all my dialogs have lost their bgs although I can't find a call within my code that uses WM_ERASEBKGND.

In order to see whether if was the dlgs themselves, or something else I constructed a basic one. It was created using all the default settings in the VS resource editor. The problem still occurs. I can attach the code for this basic dlg but the post will be quite long.

If there is no way to force the background to be visible, does anyone have any idea of what might have caused this? The buttons and other items in the dlgs are visible, just not the background or title-bar.

Many thanks in advance for help offered.

Re: Dialog box visibility

David Crow28-Oct-09 5:29

David Crow

28-Oct-09 5:29

Will-O wrote:
For some reason all my dialogs have lost their bgs...

So what is visible?

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Re: Dialog box visibility

Will-O28-Oct-09 6:36

Will-O

28-Oct-09 6:36

Visible:
- buttons
- text in text-boxes (editable and static)

Missing:
- dialog background
- text-box background
- static-text
- title bar

Other:
- space where dialog background would be renders whatever is immediately below it
- space where text-box background would be renders desktop background

Hope that clarifies enough to assist

Re: Dialog box visibility

David Crow28-Oct-09 7:19

David Crow

28-Oct-09 7:19

Will-O wrote:
Hope that clarifies enough to assist

I'm clueless. It almost sounds intentional rather than accidental. What version of VS are you using?

Re: Dialog box visibility

loyal ginger28-Oct-09 8:43

loyal ginger

28-Oct-09 8:43

Did you set the property "transparent" to true?

Re: Dialog box visibility

«_Superman_»28-Oct-09 9:19

«_Superman_»

28-Oct-09 9:19

What is the border property of your dialog box?
If it is None, change it to Dialog Frame.

«_Superman_»
I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

Re: Dialog box visibility

Iain Clarke, Warrior Programmer28-Oct-09 22:57

Iain Clarke, Warrior Programmer

28-Oct-09 22:57

I would also ask:
Does (eg) notepad show this problem too, if you use the help | about box?
If other programs are fine, then it's something you did. Make a copy of your project, and start ripping out whole sections until you find the "clever" thing you did at 2am while drinking too much beer last night...

Iain.

I have now moved to Sweden for love (awwww).
If you're in Scandinavia and want an MVP on the payroll (or happy with a remote worker), or need contract work done, give me a job! http://cv.imcsoft.co.uk/[^]

WinUSB and SetupAPI from Visual Basic Studio 2008

Arerbac28-Oct-09 4:48

Arerbac

28-Oct-09 4:48

Hi All,
I really need help on working with USB. I cant find the answer anywhere
and I am starting to get really frustrated.

My problem is that I am trying to get a handler for a USB device so
that I can read/write to it. I was already able to compile my project using
Visual Basic 2008.

I followed these instructions to get Visual Studio 2008 to compile using winUSB libraries.:
1. Get Windows DDK.
2. Copy the following header files from DDK directory to your project

POPSHACK.H
PSHPACK1.H
SETUPAPI.H
usb100.h
usb200.h
usb.h
winusb.h
winusbio.h

3. Get Visual Basic to use those header files and pertinent libraries by:

1. Project > YOURAPP Properties --> C/C++ > General > Additional Include Directories : PROJECT_DIRECTORY
2. Linker > General > Additional Library Directories : WINDDK_DIRECTORY\lib\wxp\i386

So now everything compiles perfectly. But when I run my code, setupapi is not returning me the Interface Data.
I know the device is physically plugged in.
I know the GUID ID is valid because is written in the INF File which installs winUSB.
I verified that Windows Registry knows the device is there, and also verified the GUID is the same.
I verified Device manager sees the device with WinUSB driver and it is not showing any problems.

This is the code I am using. I took it from the How to Use WinUSB document
written by microsoft. I marked where the Interface is still empty.

<br />
BOOL CUSBDevice::GetDevicePath(LPGUID InterfaceGuid, PCHAR DevicePath, size_t BufLen)<br />
{<br />
  BOOL bResult = FALSE;<br />
  HDEVINFO deviceInfoSet;<br />
  SP_DEVINFO_DATA deviceInfoData;<br />
  SP_DEVICE_INTERFACE_DATA deviceInterfaceData;<br />
  PSP_DEVICE_INTERFACE_DETAIL_DATA detailData = NULL;<br />
  ULONG length;<br />
  ULONG requiredLength=0;<br />
  HRESULT hr;<br />
<br />
// All device infor for specific GUID<br />
  deviceInfoSet = SetupDiGetClassDevs(InterfaceGuid,         //<----- deviceInfoSet HAS A VALUE after this.<br />
                     NULL, NULL,<br />
                     DIGCF_PRESENT | DIGCF_DEVICEINTERFACE);<br />
//Error handling code omitted.<br />
  if (deviceInfoSet == INVALID_HANDLE_VALUE){<br />
	  return bResult;<br />
  }<br />
<br />
// [2]<br />
  deviceInterfaceData.cbSize = sizeof(SP_DEVICE_INTERFACE_DATA);<br />
<br />
 bResult = SetupDiEnumDeviceInfo(deviceInfoSet,            <br />
	NULL, InterfaceGuid, 0, &deviceInterfaceData);   //<----- Im pretty sure this is where the problem lies.   <br />
<br />
  <br />
//Error handling code omitted.<br />
  if (bResult == FALSE){      //<--- I check if the function was successfull (and it wasnt)<br />
	  DWORD tError;<br />
	  tError = GetLastError();   //<--- The error value is 0x103 - End of list, meaning nothing was returned.<br />
	  <br />
	  <br />
	  return FALSE;<br />
  }<br />
<br />
// [3]<br />
  SetupDiGetDeviceInterfaceDetail(deviceInfoSet,<br />
                                  &deviceInterfaceData,<br />
                                  NULL, 0,<br />
                                  &requiredLength,<br />
                                  NULL);<br />
<br />
  detailData = (PSP_DEVICE_INTERFACE_DETAIL_DATA)<br />
     LocalAlloc(LMEM_FIXED, requiredLength);<br />
<br />
  if(NULL == detailData)<br />
  {<br />
    SetupDiDestroyDeviceInfoList(deviceInfoSet);<br />
    return FALSE;<br />
  }<br />
<br />
.... // INCOMPLETE CODE<br />
<br />
<br />
<br />

Thank you everyone, I really appreciate all the help i can get.
Dan

USB.... ITS EAAASY! Riiiiiiight....

Re: WinUSB and SetupAPI from Visual Basic Studio 2008

David Crow28-Oct-09 5:37

David Crow

28-Oct-09 5:37

dcabrera1983 wrote:
My problem is that I am trying to get a handler for a USB device so
that I can read/write to it.

Use CreateFile() to get the handle. You can then use ReadFile() and WriteFile() with that handle.

Re: WinUSB and SetupAPI from Visual Basic Studio 2008

Arerbac28-Oct-09 16:37

Arerbac

28-Oct-09 16:37

Hi, Thanks for your responese but could you elaborate a little bit more?
The device I am trying to connect is my own.. and I have read that to be able to do that
it needs to be a generic device, like a COM1 port or a HD device.. how do I open it as a file
or what would the file name and location be?
Thanks!

Re: WinUSB and SetupAPI from Visual Basic Studio 2008

David Crow29-Oct-09 2:35

David Crow

29-Oct-09 2:35

dcabrera1983 wrote:
it needs to be a generic device, like a COM1 port...

Have you tried:

CreateFile("COM1", ...);

Maximum length of MS Access Query

pandit8428-Oct-09 4:35

pandit84

28-Oct-09 4:35

Hi ,
I am using MS Access Database . Which has GUID as its one of the column. I have to fetch the data from this database using supplied GUID's . I have written the query like this

SELECT * FROM Images WHERE GUID = 'First GUID" OR 'Second' OR .. ..OR .. OR

This query can be long to N numbers of GUIDs passed. This query is working fine. But I have the doubt whether this query will fail at certain point due some buffer or limitation on query lenght. Is there any limitation on Query Length. Is there any other solution to make this query compact ??

Thanks in Advance

Re: Maximum length of MS Access Query

jeron128-Oct-09 6:02

jeron1

28-Oct-09 6:02

Found this site[^], look towards the bottom, hopefully it helps.

Tab order while using property sheet

patup928-Oct-09 4:17

patup9

28-Oct-09 4:17

Hi,

I have a dialog with some edit controls and a property sheet with three pages. When we take the dialog the focus is on one of the controls in dialogf outside the property sheet. when i switch the focus using tab key, the focus first goes to the controls inside the sheet and at last comes to the tab of the sheet. but i want the order such that it should first go the tab before going to the controls inside that. Please tell me how i can do that.

Re: Tab order while using property sheet

transoft28-Oct-09 7:14

transoft

28-Oct-09 7:14

If you are using resource editor, you can set the tab order there. It is available in "Layout" menu in VC6 and "Format" menu VC9. Shortcut key is Ctrl + D (in VC6 keyboard shortcut map). Then you can see the tab order indication for all controls. You can click on each controls to sequence.

If you are creating the controls dynamically, the creation order sets the tab order. You can change it by using SetWindowPos().

Using a C++ dll in C++ project and a C# project... C# requires __stdcall c++ does not... is there a way the dll can determine who is using him?

Greg Mort28-Oct-09 4:02

Greg Mort

28-Oct-09 4:02

I want to be able to #define CSHARP if the dll detects a c# app, and not define it if its c++

if there is another way of doing it I would be open to that as well... I just cannot afford the time it takes to change this each time i build it with a different application

#define CSHARP
#ifdef CSHARP
typedef void (__stdcall *callBack)(unsigned char* buffer, int size);
#else
typedef void ( *callBack)(unsigned char* buffer, int size);
#endif

Re: Using a C++ dll in C++ project and a C# project... C# requires __stdcall c++ does not... is there a way the dll can determine who is using him?

CPallini28-Oct-09 4:13

CPallini

28-Oct-09 4:13

Greg Mort wrote:
Using a C++ dll in C++ project and a C# project... C# requires __stdcall c++ does not... is there a way the dll can determine who is using him?

Do you build two versions of the same DLL? Really?
Smile | :)

If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Re: Using a C++ dll in C++ project and a C# project... C# requires __stdcall c++ does not... is there a way the dll can determine who is using him?

Greg Mort28-Oct-09 4:15

Greg Mort

28-Oct-09 4:15

<blockquote class="FQ"><div class="FQA">CPallini wrote:</div>Do you build two versions of the same DLL? Really?</blockquote>
yes
C#, C++ <- windows and XP

Re: Using a C++ dll in C++ project and a C# project... C# requires __stdcall c++ does not... is there a way the dll can determine who is using him?

CPallini28-Oct-09 4:21

CPallini

28-Oct-09 4:21

I don't get you: C++ can call __stdcall functions.
Smile | :)

Re: Using a C++ dll in C++ project and a C# project... C# requires __stdcall c++ does not... is there a way the dll can determine who is using him?

Greg Mort28-Oct-09 4:28

Greg Mort

28-Oct-09 4:28

CPallini wrote:
I don't get you: C++ can call __stdcall functions.

agreed, however in this instance that is not going to be possible

therefore, I am asking if there is a way to detect who is using the dll, or another way

Re: Using a C++ dll in C++ project and a C# project... C# requires __stdcall c++ does not... is there a way the dll can determine who is using him?

CPallini28-Oct-09 10:11

CPallini

28-Oct-09 10:11

Greg Mort wrote:
agreed, however in this instance that is not going to be possible

Why?

Greg Mort wrote:
therefore, I am asking if there is a way to detect who is using the dll, or another way

Of course there is no way to determine, at compile time, the kind of programming language used to build the application the DLL will be linked to.

I believe I keep missing the point: if you really (I strongly doubt about...) need to maintain two different configurations of the DLL, cannot you just define these configurations in Visual Studio?
Smile | :)

Re: Using a C++ dll in C++ project and a C# project... C# requires __stdcall c++ does not... is there a way the dll can determine who is using him?

Greg Mort28-Oct-09 10:17

Greg Mort

28-Oct-09 10:17

yup def. missing the point... there are not two configurations, nor is this a sole thing to do with visual studio

read the thread below, it should make sense

like the other guy said, which is what i presumed the answer has always been, there is no true way to detect who is using a dll at compile because the code is already compiled, and nos not who is using it, its just a file, that is interpreted by another program...
one way to do this is to just make two separate functions, that then in turn use the same function inside of that dll
and the program must just call the appropriate function

Re: Using a C++ dll in C++ project and a C# project... C# requires __stdcall c++ does not... is there a way the dll can determine who is using him?

CPallini28-Oct-09 10:19

CPallini

28-Oct-09 10:19

I read that and the callback argument doesn't convince me. Could you provide a sample?

Re: Using a C++ dll in C++ project and a C# project... C# requires __stdcall c++ does not... is there a way the dll can determine who is using him?

Greg Mort28-Oct-09 10:22

Greg Mort

28-Oct-09 10:22

i dont think i understand what you are asking?

Re: Using a C++ dll in C++ project and a C# project... C# requires __stdcall c++ does not... is there a way the dll can determine who is using him?

CPallini28-Oct-09 10:27

CPallini

28-Oct-09 10:27

I believe the C++ application can use __stdcall (hence the same DLL for both C++ and C# applications, no need to detect whatever). You said it's not possible due to use of callbacks. Such an argument make no sense to me.
Smile | :)

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.