Re: How to ShellExecute a PDF to a specific page - C / C++ / MFC Discussion Boards

Freak3027-Aug-14 1:25

27-Aug-14 1:25

If I remember corrctly, you don't pass the message to Event Viewer directly, but you pass an application name and message id. You need a DLL that contains the texts to the ID (don't ask me in what format). And you need a specific registry key (in local machine I think) pointing the Event Viewer to the path of the DLL. We also used this approach long ago in one of our applications but aren't using it anymore because it's so complicated.

I would suggest the user needs to at least one directory where he/she has write permission. You could then enter the directory into some kind of ini file, read it on application start and write the log file into that directory.

The good thing about pessimism is, that you are always either right or pleasently surprised.

CMFCOutlookBar cannot return to pane 0.

Drakesal25-Aug-14 0:12

Drakesal

25-Aug-14 0:12

Hi i am writing a simple app with doc/viw architecture, now i have to buttons in the Outlook bar "Folders" and "Calendar" now i want that when restart the app the selected pane will be always the 0 -> "Folders" now i tried this:

CMFCOutlookBarTabCtrl* pOutlookBar = (CMFCOutlookBarTabCtrl*)m_wndNavigationBar.GetUnderlyingWindow();

pOutlookBar->SetActiveTab(0);

After this nothing happen. Why this?

i wait for your precious response Smile | :)

Giovanni

how to pass a function which has variable arguments as template argument?

Falconapollo24-Aug-14 5:37

Falconapollo

24-Aug-14 5:37

I want to write a adapter which can convert non static member functions to C-sytle function pointers. Here is what I got now(see the following code snippet), but the current solution is not general. I want to make

C++

int (T::*Func)(int)

accept variable arguments. but i'm stuck here? anybody can help me?

and it's necessary to make

C++

int f()

and

C++

int display

have the same signature.

The final goal is Interfacing C++ member functions with C libraries.

C++

class StoreVals
    {
        int val;
    public:
        int display(int k) { cout << k << endl; return 0; }
    };

template<class T, int (T::*Func)(int) >
class CObjectT
{
public:
    /*
     the signagure of f(...) should change by the argument of template. they must be the same, but i don't know how to achieve this goal
    */
    static int f(int i)
    { 
        T obj;
        return (obj.*Func)(i);
    }
};

void main()
{
 CObjectT<StoreVals, &StoreVals::display>::f(7);
 auto function_t = &CObjectT<StoreVals, &StoreVals::display>::f;
 cout << typeid(function_t).name() << endl; // now it's a c-style function pointer
}

Re: how to pass a function which has variable arguments as template argument?

jschell25-Aug-14 10:30

jschell

25-Aug-14 10:30

Falconapollo wrote:
The final goal is Interfacing C++ member functions with C libraries.

If you want your C++ code to call C libraries then you use

extern "C" {
...// C code and/or declarations.
}

If you want C libraries to call your C++ code then you must provide a C interface to it.

How to ShellExecute a PDF to a specific page

DanYELL23-Aug-14 17:28

DanYELL

23-Aug-14 17:28

I have a PDF. If I use this

CString Path = GetPath("manual.pdf");
ShellExecute(0, "open", Path, NULL, NULL, SW_SHOWNORMAL);

The PDF executes. But if I then use

Path += "#page=17";
ShellExecute(0, "open", Path, NULL, NULL, SW_SHOWNORMAL);

or anything similar, I cant get the PDF to execute. I want the PDF to
execute and jump to a specific page. I found solutions, I think, where
I can execute the adobe.exe file and the path, but I dont know where
adobe.exe is located on these computers. Is there any way to execute
a PDF without knowing where the adobe executable is at?

Please, any response any one can give me will be greatly appreciated.

Re: How to ShellExecute a PDF to a specific page

enhzflep23-Aug-14 17:58

enhzflep

23-Aug-14 17:58

I suspect you can't open it to a specific page without knowing where Acrobat resides, but no matter - you can find that out from the registry apparently.

If you have a look at the key:
HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\App Paths\AcroRd32.exe\ you can get the full-path of the exe.

From there, it's seems to be just a matter of passing that file to shell execute along with using a parameter that includes (1) the full path to the pdf doc and (2) the desired page num.

Anyhoo - here's my source: http://www.devhut.net/2013/12/04/vba-open-a-pdf-to-a-specific-page/[^]

Re: How to ShellExecute a PDF to a specific page

Richard MacCutchan23-Aug-14 22:30

Richard MacCutchan

23-Aug-14 22:30

The third parameter in the call to ShellExecute[^] can be used to pass the extra parameters to the called application. All you need to do is check Adobe reader for the format of those parameters.

Re: How to ShellExecute a PDF to a specific page

Graham Breach23-Aug-14 23:00

Graham Breach

23-Aug-14 23:00

Another thing to think about is whether the computers you are targetting have Adobe reader installed at all. Personally, I use SumatraPDF for viewing PDFs, but there is a Microsoft reader app (its name escapes me right now), Foxit Reader, and probably others. Each of them could have different ways to specify the page to show first.

Re: How to ShellExecute a PDF to a specific page

David Crow25-Aug-14 3:52

David Crow

25-Aug-14 3:52

What is the net value of Path?

"One man's wage rise is another man's price increase." - Harold Wilson

"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

"You can easily judge the character of a man by how he treats those who can do nothing for him." - James D. Miles

how this error has generated -c program?

mybm122-Aug-14 20:33

mybm1

22-Aug-14 20:33

Quote:
fatal error: Utility1.h: No such file or directory
compilation terminated.

Re: how this error has generated -c program?

Richard MacCutchan22-Aug-14 21:07

Richard MacCutchan

22-Aug-14 21:07

The message is telling you what is wrong; what is it about "No such file or directory" that you do not understand?

Given this and your other questions, I strongly recommend you get hold of a decent reference on C programming. You cannot expect to learn it by asking repeated questions here.

Re: how this error has generated -c program?

mybm122-Aug-14 22:42

mybm1

22-Aug-14 22:42

but it is inside the directory that wat i was asking is it due to logical error or wat?

Re: how this error has generated -c program?

Richard MacCutchan23-Aug-14 0:16

Richard MacCutchan

23-Aug-14 0:16

Are you sure that your project configuration includes that directory in its search path?

can anyone suggest how to convert matlab code into c code..for resampling function

mybm121-Aug-14 19:10

mybm1

21-Aug-14 19:10

Quote:
can anyone suggest how to convert matlab code into c code..for resampling function

Re: can anyone suggest how to convert matlab code into c code..for resampling function

Richard MacCutchan21-Aug-14 21:50

Richard MacCutchan

21-Aug-14 21:50

This question is impossible to answer. Code conversion is mostly a manual task. If you want an automated conversion tool then you should use Google to find suggestions.

Re: can anyone suggest how to convert matlab code into c code..for resampling function

mybm121-Aug-14 23:11

mybm1

21-Aug-14 23:11

what is this catalysis MCS tool..

Re: can anyone suggest how to convert matlab code into c code..for resampling function

Richard MacCutchan21-Aug-14 23:23

Richard MacCutchan

21-Aug-14 23:23

maibam debina wrote:
what is this catalysis MCS tool.

Sorry, I have no idea.

Re: can anyone suggest how to convert matlab code into c code..for resampling function

mybm121-Aug-14 23:25

mybm1

21-Aug-14 23:25

actually in matlab the function is available for resample but in c for me its hard so can u suggest some.

Re: can anyone suggest how to convert matlab code into c code..for resampling function

Richard MacCutchan22-Aug-14 0:19

Richard MacCutchan

22-Aug-14 0:19

Sorry, but I do not know matlab, you would probably get better response by going to a dedicateed forum.

Re: can anyone suggest how to convert matlab code into c code..for resampling function

mybm122-Aug-14 0:21

mybm1

22-Aug-14 0:21

but i know u r master in c program..so leaving matlab aside do u know how to represent in c code for resampling..

Re: can anyone suggest how to convert matlab code into c code..for resampling function

Richard MacCutchan22-Aug-14 0:34

Richard MacCutchan

22-Aug-14 0:34

maibam debina wrote:
c code for resampling

I have no idea what you mean by resampling. If you have a specific coding issue then put the details here and people will try to help you. But it is unlikely that anyone has the time to write your code, or convert from one language to another.

Re: can anyone suggest how to convert matlab code into c code..for resampling function

C^hris L^osinger22-Aug-14 8:32

C^hris L^osinger

22-Aug-14 8:32

what kind of resampling (bilinear, bicubic, trilinear, spline, sinc, etc)? and for what (audio, video, statistical, etc.) ?

image processing toolkits | batch image processing

Re: can anyone suggest how to convert matlab code into c code..for resampling function

mybm122-Aug-14 18:41

mybm1

22-Aug-14 18:41

audio and do please guide how to find the time duration of the .wave file?

Re: can anyone suggest how to convert matlab code into c code..for resampling function

enhzflep23-Aug-14 18:31

enhzflep

23-Aug-14 18:31

Here's some code that does re-sampling of audio. No idea if it'll be of any use to you - googling for how to do it it was not much easier than implementing it. It was used for up-sampling 8363 samples/sec sound into 44100 samples/sec sound. It was used for working with the audio samples as found in .XM files (somewhat similar to Amiga .mod files, or less-so, .MIDI files)

There's bound to be a bunch of code here that's useless to you, but I've no idea which format your .WAV files are, so I'll leave it to you to use that which you need. You're also on-your-own when it comes to reading the samples from a WAV file - in my instance, the header of the samples is different to the .WAV file header - my data also came with a single header - the wav file contains a number of chunks, each of these has its own header.

The re-sampling is of the linear variety.
You can determine the play-time of the WAV file by looking at a number of the chunk headers inside it. Don't ask me how, as I haven't bothered to do it, and don't know. (nor am I interested)

This page seems to be an easier read than the Wikipedia WAV page - http://www.sonicspot.com/guide/wavefiles.html[^]

C++

float *convert8tofloat(char *input, int numSamples)
{
    float *result = new float[numSamples];
    int i;
    for (i=0; i<numSamples; i++)
    {
        result[i] = input[i] / 128.0; //(((input[i]+128)/255.0) - 0.5) * 2.0;
    }
    return result;
}

float *convert16tofloat(short *input, int numSamples)
{
    float *result = new float[numSamples];
    int i;
    for (i=0; i<numSamples; i++)
    {
        result[i] = (int)input[i] / 32768.0; //(((input[i]+128)/255.0) - 0.5) * 2.0;
    }
    return result;
}

// t in range [0..1]
char interpolate8(char val1, char val2, float t)
{
    short difference;
    difference = val2 - val1;
    return val1 + t*difference;
}
// t in range [0..1]
short interpolate16(short val1, short val2, float t)
{
    int difference;
    difference = val2 - val1;
    return val1 + t*difference;
}
// t in range [0..1]
float interpolateFloat32(float val1, float val2, float t)
{
    float difference;
    difference = val2 - val1;
    return val1 + t*difference;
}


char *resample8Interp(char *input, int numSamplesIn, int numSamplesOut)
{
    char *output;
    output = new char[numSamplesOut];
    float curIndex, proportion, step;
    char curVal;
    int i, intPart;

    output[0] = input[0];
    output[numSamplesOut-1] = input[numSamplesIn-1];
    step = (float) (numSamplesIn-1) / (numSamplesOut-1);

    for (i=1; i<numSamplesOut-1; i++)
    {
        curIndex = (float) i * step;
        intPart = floor(curIndex);
        proportion = curIndex - intPart;
        curVal = interpolate8(input[intPart], input[intPart+1], proportion);
        output[i] = curVal;
    }
    return(output);
}

short *resample16Interp(short *input, int numSamplesIn, int numSamplesOut)
{
    short *output;
    output = new short[numSamplesOut];
    float curIndex, proportion, step;
    short curVal;
    int i, intPart;

    output[0] = input[0];
    output[numSamplesOut-1] = input[numSamplesIn-1];
    step = (float) (numSamplesIn-1) / (numSamplesOut-1);

    for (i=1; i<numSamplesOut-1; i++)
    {
        curIndex = (float) i * step;
        intPart = floor(curIndex);
        proportion = curIndex - intPart;
        curVal = interpolate16(input[intPart], input[intPart+1], proportion);
        output[i] = curVal;
    }
    return(output);
}

float *reSampleFloat32(float *srcArray, int origNumSamples, int origRate, int newRate, int &outNumSamples)
{
    outNumSamples = (origNumSamples * newRate) / origRate;
    float *output = new float[outNumSamples];
    int i, intPart;
    float fractionalPart, curIndex, curVal, step;

    step = (float)(origNumSamples-1) / (outNumSamples-1);
    output[0] = srcArray[0];
    output[outNumSamples-1] = srcArray[origNumSamples-1];
    for (i=0; i<outNumSamples; i++)
    {
        curIndex = step * i;
        intPart = floor(curIndex);
        fractionalPart = curIndex - intPart;
        curVal = interpolateFloat32(srcArray[intPart], srcArray[intPart+1], fractionalPart);
        output[i] = curVal;
    }
    return output;
}

Here's some examples of implementation. I dont remember a thing about the code, haven't touched it in years - nor am I inclined to. That's an exercise for you. I assume some of the comments are misleading - I just changed the one that says "only works for 16 bit samples" - it had said "only works for 8 bit samples, which was clearly inaccurate.

Finally, not that in my case I wanted to convert the samples to be a 32-bit floating point format in the range [-1..1] which simplifies drawing them to screen.

Good luck!

C++

void onSmpListChange(HWND smpListBox, XMFile *mSong)
{
    int curIns, curSmp;
    HWND dlg = GetParent(smpListBox);
    HWND insList = GetDlgItem(dlg, IDC_INS_LIST);

    curIns = SendMessage(insList, LB_GETCURSEL, 0, 0);
    curSmp = SendMessage(smpListBox, LB_GETCURSEL, 0, 0);

    XMSample *curSample = &mSong->instruments[curIns].samples[curSmp];
    int bits=8, numSamples = curSample->header.sampleLength;
    float *tmpBuffer;

    if (curSample->header.compression == 0)
        SetDlgItemText(dlg, IDC_COMP, "Delta");
    else
    {
        SetDlgItemText(dlg, IDC_COMP, "ADPCM");
        return;
    }

    // only works for 16 bit samples
    if (curSample->header.type & 0x16)
    {
        printf("Resampling 16bit sound, %d samples - %20.20s\n", numSamples, curSample->header.sampleName);
        numSamples /= 2;
        SetDlgItemInt(dlg, IDC_BITS, 16, true);
        char fileName[48];
        strcpy(fileName, "16bit 8363hz.wav");
//        strncat(fileName, curSample->header.sampleName, 20);
        writeWavFile(fileName, curSample->data, numSamples, 16, 1, 8363);

        short *sBuf = resample16Interp((short*)curSample->data, numSamples, 44100*numSamples / 8363);
        strcpy(fileName, "16bit 44100hz.wav");
//        strncat(fileName, curSample->header.sampleName, 20);
        writeWavFile(fileName, sBuf, (44100*numSamples)/8363, 16, 1, 44100);
        delete sBuf;

        tmpBuffer = convert16tofloat((short*)curSample->data, numSamples);
    }

    else
    {
        printf("Resampling 8bit sound, %d samples - %20.20s\n", numSamples, curSample->header.sampleName);
        SetDlgItemInt(dlg, IDC_BITS, 8, true);
        char fileName[48];
        strcpy(fileName, "8bit 8363hz.wav");
//        strncat(fileName, curSample->header.sampleName, 20);
        writeWavFile(fileName, curSample->data, numSamples, 8, 1, 8363);

        char *cBuf = resample8Interp((char*)curSample->data, numSamples, 44100*numSamples / 8363);
        strcpy(fileName, "8bit 44100hz.wav");
//        strncat(fileName, curSample->header.sampleName, 20);
        writeWavFile(fileName, cBuf, (44100*numSamples)/8363, 8, 1, 44100);
        delete cBuf;

        tmpBuffer = convert8tofloat((char*)curSample->data, numSamples);
    }
    // wParam = buffer (float)  // lParam = count
    SetDlgItemInt(dlg, IDC_NUM, numSamples, true);

    SendDlgItemMessage(dlg, IDC_WAV_IMG, WM_SET_DATA, (WPARAM)tmpBuffer, (LPARAM)numSamples);// * 44100 / 8835);



    delete g_curSamples;
    g_curSamples = tmpBuffer;
    g_numSamples = numSamples;// * 44100/8355;
}


void onConvertBtn(HWND parentDlg)
{
    float *mSamples;
    int nSamples;

//    mSamples = reSample(g_curSamples, g_numSamples, 8363, 44100, nSamples);
    mSamples = reSampleFloat32(g_curSamples, g_numSamples, xmRate, 44100, nSamples);
    SendDlgItemMessage(parentDlg, IDC_WAV_IMG2, WM_SET_DATA, (WPARAM)mSamples, (LPARAM)nSamples);
    delete mSamples;
}

Re: can anyone suggest how to convert matlab code into c code..for resampling function

mybm124-Aug-14 19:30

mybm1

24-Aug-14 19:30

thank you fren....

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