Re: String conversion - C / C++ / MFC Discussion Boards

Anthony_Yio15-Jun-04 23:15

15-Jun-04 23:15

Hello,

I have two program call it A.EXE and B.EXE . B.EXE will actually invoke the A.EXE through CreateProcess API and establish some piping. If you familiar with wsinetd - Windows Simple inetd daemon or inetd. That is exactly what B.exe does. B.EXE listen to a port number and spawn process based on port number it accept from client which in this case the process been spawned is A.EXE. The communication between A.EXE and B.EXE is through piping. I can get the thing up but the problem now is I need to debug A.EXE in the IDE (meaning I can set break point and etc) cause basically there is where the logics lie.

I have generated the debug info for A.EXE and B.EXE and it is denifitely in debug mode. The compiler setting is /MTd /W3 /DWIN32 /ZI /Od. The PDB file for A.EXE and B.EXE are created and stored in the same directory as A.EXE and B.EXE. I have step into B.EXE no problem but I could not step into the spawned process A.EXE. Any remedies. I have thought of using remote debugging but no luck. Any debugging gurus out there that could shed me light?

thank you.

Sonork 100.41263:Anthony_Yio

Re: Debugging the spawned process.

valikac16-Jun-04 3:29

valikac

16-Jun-04 3:29

Check out Olly Debugger and SoftICE.

Kuphryn

Re: Debugging the spawned process.

Blake Miller16-Jun-04 13:48

Blake Miller

16-Jun-04 13:48

Maybe this would work for you:

DebugBreakProcess

The DebugBreakProcess function causes a breakpoint exception to occur in the specified process. This allows the calling thread to signal the debugger to handle the exception.

BOOL DebugBreakProcess(HANDLE Process);

Have B call this soon after it launches A...

Re: Debugging the spawned process.

Anthony_Yio16-Jun-04 18:38

Anthony_Yio

16-Jun-04 18:38

Actually, your answer is the same as my colleague but my colleague mentioned DebugBreak instead. I have tested it. It doesn't work on DebugBreakProcess but DebugBreak. I think DebugBreakProcess will only work on another process.

thanks by the way. A 5 for your quality reply.

Sonork 100.41263:Anthony_Yio

String conversion

Cedric Moonen15-Jun-04 23:13

Cedric Moonen

15-Jun-04 23:13

Hello !
I have a dll written in C++ that is used in a VB application. In one function, I send a string (BSTR type, so it has the VB format), and I want to convert it into a char* string. How can I do that easily ?

Thank you.

Re: String conversion

Anthony_Yio15-Jun-04 23:37

Anthony_Yio

15-Jun-04 23:37

I think you can do this

<br />
BSTR temp;<br />
char* str = (char*)_bstr_t(temp);<br />

Sonork 100.41263:Anthony_Yio

Re: String conversion

Cedric Moonen15-Jun-04 23:49

Cedric Moonen

15-Jun-04 23:49

Ok thanks, I will try this

Re: String conversion

Rodrigo Pinto Pereira de Souza16-Jun-04 7:11

Rodrigo Pinto Pereira de Souza

16-Jun-04 7:11

The BSTR Value is UNICODE Value, you should use a routine to convert from Unicode to ANSI.

Using cast method, you can lose data, and you can have memory leaks.

The best way to do it is :

USES_CONVERSION
char* a = W2A(bstrvalue);

IMHO you should use UNICODE type, like wchar ao rather than char.

To prevent to have 2 types, you can use TCHAR.

regards

Rodrigo Pinho Pereira de Souza

CEdit.SetWindowText(...);

V.15-Jun-04 22:36

15-Jun-04 22:36

I do this:
m_valueSearchBox.SetWindowText(initValue);
if I do this the initValue string (CString) wil be selected, but I need the cursor behind the text so you can type an appending text.
SetSeldoesn't seem to work?

tnx.

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimmy Hendrix

Re: CEdit.SetWindowText(...);

Dominik Reichl15-Jun-04 22:49

Dominik Reichl

15-Jun-04 22:49

Why shouldn't it? Try this:

CString str;<br />
m_valueSearchBox.GetWindowText(str);<br />
int nPos = str.GetLength();<br />
m_valueSearchBox.SetSel(nPos, nPos, TRUE);

Best regards,
Dominik

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??
(doesn't work on NT)

Re: CEdit.SetWindowText(...);

V.15-Jun-04 22:57

15-Jun-04 22:57

tnx for the reply, but I'm afraid I must dissapoint you.
I do this:

<br />
int pos = initValue.GetLength();<br />
m_valueSearchBox.SetWindowText(initValue);<br />
m_valueSearchBox.SetSel(pos, pos, TRUE);<br />

(it's SET not GET, but not important).
What happens is that the cursor is behind the text, BUT the text is selected, so if you start typing ... Frown | :(

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimmy Hendrix

Re: CEdit.SetWindowText(...);

Weiye Chen15-Jun-04 23:45

Weiye Chen

15-Jun-04 23:45

V. wrote:
m_valueSearchBox.SetSel(pos, pos, TRUE);

I think the positions in SelSel are index based, so try:

m_valueSearchBox.SetSel(pos-1, pos-1, TRUE);

<font=arial>Weiye Chen
When pursuing your dreams, don't forget to enjoy your life...

Re: CEdit.SetWindowText(...);

V.15-Jun-04 23:52

15-Jun-04 23:52

tnx for your reply, but I have to disappoint you too.

I tried SetFocus() and SetSel with about every value possible.
SetSel(-1, nPos, FALSE/TRUE); (nPos = length, length-1 ,... as first and/or second parameter etc.)

It just doesn't seem to work.
Normally it should, but maybe it's due to something else (processor or something)

I don't know, I'll keep searching

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimmy Hendrix

Re: CEdit.SetWindowText(...);

Dominik Reichl15-Jun-04 23:57

Dominik Reichl

15-Jun-04 23:57

It must be something other then.

I tried this in a test project:

CString str = _T("Test");<br />
m_cEdit.SetWindowText(str);<br />
int nPos = str.GetLength();<br />
m_cEdit.SetSel(nPos, nPos, TRUE);<br />
m_cEdit.SetFocus();

And it does exactly what you want. "Test" is written into the edit control and the cursor is at the end, nothing is selected.

Maybe check for other things that could influence the selection and focus (UpdateData, returning FALSE in OnInitDialog, and all those things)

Best regards,
Dominik

_outp(0x64, 0xAD);
and
__asm mov al, 0xAD __asm out 0x64, al
do the same... but what do they do??
(doesn't work on NT)

Re: CEdit.SetWindowText(...);

V.16-Jun-04 1:55

16-Jun-04 1:55

The correct answer:

<br />
m_valueSearchBox.SetWindowText(initValue);<br />
int nPos = initValue.GetLength();<br />
m_valueSearchBox.SetSel(nPos, nPos, TRUE);<br />
m_valueSearchBox.SetFocus();<br />
bResult = FALSE;<br />

bResult is returned in OnInitDialog. So you were right.

Huge tnx to you. (and off course all others who tried to help Wink | ;)

)

"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimmy Hendrix

How do I load a dll from within a dll.

Member 114349815-Jun-04 22:16

Member 1143498

15-Jun-04 22:16

Hi All, On win2000 I have created an exe file to list and load dll files. Selecting a dll should load an API file, also a dll. LoadLibrary() works in the exe but not in a dll. Can anyone tell me what's wrong?

D. Kelly

Re: How do I load a dll from within a dll.

Blake Miller16-Jun-04 13:50

Blake Miller

16-Jun-04 13:50

Not sure. You must be doing something wrong in your DLL, because any DLL could really load another DLL.
When you call the LoadLibrary, what is the return value from GetLastError when the LoadLibrary fails? That is a good clue what is wrong.

Re: How do I load a dll from within a dll.

Member 114349817-Jun-04 21:41

Member 1143498

17-Jun-04 21:41

My mistake Blake, I should have finished the story.
The .dll API file is in the root directory of D:.
The LoadLibrary("D:\\wrk32.dll")result is picked up by GetLastError() which is 126, file not found.

Re: How do I load a dll from within a dll.

Blake Miller18-Jun-04 4:16

Blake Miller

18-Jun-04 4:16

Just before loading your DLL, add this line of code to your program:
SetErrorMode(0);
That way, when you run your progrma, a dialog box will pop up and you can see which DLL is missing. It will tell you all the places it tried to load the missing DLL.
Make sure to take the call back out before releasing your program.

Re: How do I load a dll from within a dll.

Member 114349820-Jun-04 21:07

Member 1143498

20-Jun-04 21:07

Thanks very much. That tip was most helpfull.

Daniel Kelly

VC++ Macros Reference (VB)

Archer28215-Jun-04 21:39

Archer282

15-Jun-04 21:39

Where can i find an online VC++ 6 macros reference (the VB macros)?

Re: VC++ Macros Reference (VB)

Kevin McFarlane16-Jun-04 0:11

Kevin McFarlane

16-Jun-04 0:11

IIRC there's a reference in the VC++ 6 installed Help.

Kevin

Re: VC++ Macros Reference (VB)

Archer28216-Jun-04 10:05

Archer282

16-Jun-04 10:05

Im getting tired of people telling me whats on the VS6 cd's if had them why would i ask the question?

(im sorry to sound hatefull but its getting annoying)

thats why i specified "online" meaning "located on the internet"

Re: VC++ Macros Reference (VB)

Kevin McFarlane16-Jun-04 11:53

Kevin McFarlane

16-Jun-04 11:53

I assumed that if you were running VC++ you would have had the Help installed? But that's not always so.

However, you can also always find an up-to-date Help set, which is a superset of the Visual Studio installed online help, at http://msdn.microsoft.com/library[^].

The macros reference will be in there somewhere. Though I always find the online version of the MSDN Library harder to search than the installed version.

Kevin

COM newbie - ITaskbarList problem

Kri515-Jun-04 21:35

Kri5

15-Jun-04 21:35

I just started COM programming and managed to write some small sample programs to use the IActiveDesktop and IShellLink interfaces and their methods; basically i am playing around with things like these for the time being:

<br />
    CoInitialize(NULL);<br />
<br />
    WCHAR   wszWallpaper [MAX_PATH];<br />
    HRESULT hr;<br />
    IActiveDesktop* pIAD;<br />
<br />
<br />
    // using Active Desktop interface<br />
    hr = CoCreateInstance ( CLSID_ActiveDesktop, NULL, CLSCTX_INPROC_SERVER, IID_IActiveDesktop, (void**) &pIAD );<br />
<br />
    if ( SUCCEEDED(hr) )<br />
    {<br />
        // Get the name of the wallpaper file.<br />
        hr = pIAD->GetWallpaper ( wszWallpaper, MAX_PATH, 0 );<br />
<br />
        if ( SUCCEEDED(hr) )<br />
        {<br />
            wcout << L"Wallpaper path is:\n    " << wszWallpaper << endl << endl;<br />
        }<br />
<br />
    }<br />
<br />
  //.... etc<br />

The above compiles correctly and works successfully.

However, when i try to use the ITaskbarList in the same manner, the compiler throws it all up, telling me that ITaskbarList is an undeclared identifier...

Any ideas where i'm getting it all wrong?

Many thanks...

Chris

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