C / C++ / MFC

4-Feb-13 22:56

Hello Everybody,

I hope i have choosen the right forum for my Question.

I have a little application which starts another programm with a specific path (a txt-file).
Yes, easy and simple, it works fine with ShellExecute, but i have a problem with some Executables(I have to test a few programs). One Executable opens correct but it don´t opens the given path. I don´t understake whats wrong, because if I drag and drop the txt-file manualy on the executable it works.
So my Question is, are ShellExecute and Drag&Drop two different things to open a programm? Does anybody know a way to fix my problem ?

Thanks in advance,
Michael

Richard MacCutchan5-Feb-13 0:00

5-Feb-13 0:00

You need to show the section of the code that tries to start the program and explain exactly what part of it is not working.

LFK_Michael5-Feb-13 0:16

5-Feb-13 0:16

C++

void StartEXE (String^ path)
{
TCHAR prog[] = TEXT("C:\\...\\...."); // Programpath

string p ;
MarshalString(path, p);
std::string str= p;
TCHAR *param=new TCHAR[str.size()+1];
param[str.size()]=0;

const TCHAR open[] = TEXT("runas")
ShellExecute( NULL, open, prog, param, NULL, SW_SHOWNORMAL );
}

void MarshalString ( String ^ s, string& os )
        {
        using namespace Runtime::InteropServices;
        const char* chars =
        (const char*)(Marshal::StringToHGlobalAnsi(s)).ToPointer();
        os = chars;
        Marshal::FreeHGlobal(IntPtr((void*)chars));
        }

This is the code i use. I call StartEXE with a String like C:\\test.txt , the programmpath is fix in the code.
The Programm i want to open opens but it don´t open the path.
This happens only by one Programm, if i want to open another programm this code works.
Any Ideas?

Richard MacCutchan5-Feb-13 0:26

5-Feb-13 0:26

Without seeing the actual parameters and the code of the executing program it's impossible to guess what may be happening. It would probably be a good idea to add some debug code to the called program so you can see exactly what parameters it is trying to deal with. What is the "runas" parameter supposed to do?

David Crow5-Feb-13 2:17

David Crow

5-Feb-13 2:17

You might also want to consider asking for help here.

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Marius Bancila5-Feb-13 1:05

Marius Bancila

5-Feb-13 1:05

That should only work if the application you want to start supports command line parameters, or if it the default application for starting the document type you're trying to open.

LFK_Michael5-Feb-13 3:15

5-Feb-13 3:15

Thats what i wanted to hear Smile | :)

The "runas" is to start a exe with admin rights.

Is it right that open a Programm with ShellExecute is different to Drag&Drop way ? Because if i drag and drop a textfile on the Program i want to open it works. btw the program is a finished one done not by myself.

Is there a way to drag&drop the textfile to the program via code?

Marius Bancila5-Feb-13 9:28

Marius Bancila

5-Feb-13 9:28

Starting a program by command line and drag&drop are different things. An application can implement any (or neither). You cannot simulate drag&drop from code if that application is not handling the drop.

LFK_Michael5-Feb-13 12:03

5-Feb-13 12:03

Thank you for the answer.
The Application i want to open supports drag&drop.
How can i implement the drag&drop function in my program?
Do you have any Ideas ?

how to get private key from a file (not from a keystore) to sign data ?

Albert Holguin5-Feb-13 14:35

Albert Holguin

5-Feb-13 14:35

Not exactly sure what may be causing your problem... but the unix/linux calls (also supported by Windows) usually work pretty well for me.

Try them out (required header is in documentation)...
spawn[^]
exec[^]

IICTECH4-Feb-13 19:12

IICTECH

4-Feb-13 19:12

Hi,

I'm trying to sign data using dsa private key using openSSL. I want to use a private key that is stored in a file. Can any one please suggest me how to get privae key from a file.

Thanks in advance. Wink | ;)

Re: how to get private key from a file (not from a keystore) to sign data ?

Richard MacCutchan4-Feb-13 22:20

Re: how to get private key from a file (not from a keystore) to sign data ?

4-Feb-13 22:20

Read the file and extract the key. You need to explain exactly how this key is stored in the file and what problem you are having reading it out.

IICTECH4-Feb-13 23:44

IICTECH

4-Feb-13 23:44

My private key file is a text file and it contains the data

// BIG p
FCA6 82CE 8E12 CABA 26EF CCF7 110E 526D B078 B05E DECB CD1E B4A2 08F3 AE16 17AE 01F3 5B91 A47E 6DF6 3413 C5E1 2ED0 899B CD13 2ACD 50D9 9151 BDC4 3EE7 3759 2E17.
// BIG q
962E DDCC 369C BA8E BB26 0EE6 B6A1 26D9 346E 38C5.
// BIG g
6784 71B2 7A9C F44E E91A 49C5 147D B1A9 AAF2 44F0 5A43 4D64 8693 1D2D 1427 1B9E 3503 0B71 FD73 DA17 9069 B32E 2935 630E 1C20 6235 4D0D A20A 6C41 6E50 BE79 4CA4.
// BIG x
06CE 2BF2 3F33 FDCD 3F22 1301 4F56 1152 69F6 FA4D.

Here BIG x is the private key and I need this key to sign my data. Smile | :)

Re: how to get private key from a file (not from a keystore) to sign data ?

Richard MacCutchan4-Feb-13 23:58

Re: how to get private key from a file (not from a keystore) to sign data ?

4-Feb-13 23:58

IICTECH wrote:
Here BIG x is the private key and I need this key to sign my data.

So what is your problem?

Graham Breach5-Feb-13 3:57

Graham Breach

5-Feb-13 3:57

If that is your actual private key file, then it is not private anymore.

Pop up window from a dialog based application

Member 80516113-Feb-13 23:46

3-Feb-13 23:46

Hi,
I have started programming with Visual C++ recently. I have created a dialog based application which has some buttons. When I click one of the buttons I want a window to pop up(which will eventually display an image). Can you please tell me how to do it? Thanks in advance,
-Danny

Richard MacCutchan4-Feb-13 0:21

4-Feb-13 0:21

Either use a popup window which you create by hand (see CreateWindowEx[^]), or use another dialog. It all depends what you are trying to do.

Member 80516114-Feb-13 0:55

4-Feb-13 0:55

Thanks Richard for your reply. FYI I am doing the development using Visual C++. From the image window which pops up I would like to process mouse messages etc . Would that be possible if the image window is created with CreateWindowEx? I was thinking that the pop up image window should be created with a combination of CFrameWnd and CView. Is that the way to go? But I don't know how to do that. Thanks very much,
-D

Richard MacCutchan4-Feb-13 2:34

4-Feb-13 2:34

It's not easy to give a definitive answer to your question because I am not sure exactly what you are trying to do. But it sounds like you are starting from the wrong position. Why are you creating a popup window from within a dialog? Why not go for a standard CFrameWnd with whatever View type inside that will display the information that you want to show?

Member 80516114-Feb-13 19:19

4-Feb-13 19:19

Richard,
Ok I am trying what you have suggested. In that case also when the user clicks on the image(which is displayed on the CFrameWnd with view window) I want another image window to pop up which will display information corresponding to the clicked point. Please help. Thanks very much,
-Danny

Richard MacCutchan4-Feb-13 22:17

4-Feb-13 22:17

Member 8051611 wrote:
I want another image window to pop up which will display information corresponding to the clicked point.

For that you should use the DialogBox function[^] to create a modal dialog.

Member 80516114-Feb-13 23:59

4-Feb-13 23:59

I want the popup window to display the image. AFAIK a dialog box won't do it. Or can it? Thanks,
-DJ

Richard MacCutchan5-Feb-13 0:04