C / C++ / MFC

Re: Refreshing the main window

6-Aug-06 15:33

I'm working on adding the hot-switching of languages to my app, though I have ran into a few problems. I have created sattelite dlls for each of the translated resources. I create a language selection menu at run time with the help of this[^]article. I am able to update the menu and progress bar but unable to update the main dialog. The dialog is contained within the language dlls and contains many controls (with text). So, after calling LoadLibrary how do you update the main window? BTW this is a non-MFC app.

Waldermort6-Aug-06 19:29

MDI : Get handle on active document ?

6-Aug-06 19:29

Well, unless there is an easier method, I stored all the controls text into the string table and created a function to reset the text for each control Mad | :mad:

DanYELL6-Aug-06 8:00

DanYELL

6-Aug-06 8:00

I have a MDI application. From CDoc, how can I get a handle on the
active document. I can do this for a SDI application:

<br />
CFrameWnd	*pWndMain = (CFrameWnd *)AfxGetMainWnd();<br />
ASSERT(pWndMain != NULL);<br />
<br />
CDocument *pDoc = pWndMain->GetActiveDocument();<br />
ASSERT(pDoc);<br />
	<br />
POSITION pos = pDoc->GetFirstViewPosition();<br />
<br />
CView *pView = pDoc->GetNextView(pos)<br />

How can I rewrite this code for an MDI? Please any response
any one can give me will be greatly appreciated.

Sincerely,
Danielle Brina (an overworked graduate student)

Christian Graus6-Aug-06 13:09

Christian Graus

6-Aug-06 13:09

MDIGetActive() instead of GetActiveDocument should do it.

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

DanYELL6-Aug-06 13:21

DanYELL

6-Aug-06 13:21

Any chance you can show me more code? I cant type:

CDocument *pDoc = pWndMain->MDIGetActive();

because MDIGetActive is not a member of CFrameWnd.
How would you rewrite that portion of code that I
posted earlier for an MDI?

Sincerely,
Danielle Brina

Christian Graus6-Aug-06 14:05

Christian Graus

6-Aug-06 14:05

http://www.codeguru.com/forum/showthread.php?t=281430[^]

This chart has been around for ever, I remember having a printout when I was first doing MFC.

AfxGetMainWnd()->MDIGetActive()->GetActiveView()->GetDocument()

Christian Graus - Microsoft MVP - C++
Metal Musings - Rex and my new metal blog

David Crow7-Aug-06 3:46

7-Aug-06 3:46

DanYELL wrote:
From CDoc, how can I get a handle on the
active document.

What's wrong with calling AfxGetMainWnd(), which is a global function, followed by GetActiveDocument()?

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

"Judge not by the eye but by the heart." - Native American Proverb

GPRS C++

flippydeflippydebop6-Aug-06 5:43

flippydeflippydebop

6-Aug-06 5:43

Hello. - Does anyone out there know of a GPRS API for C++.

Thankyou

David Crow7-Aug-06 3:47

7-Aug-06 3:47

flippydeflippydebop wrote:
Does anyone out there know of a GPRS API for C++.

See here.

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

"Judge not by the eye but by the heart." - Native American Proverb

flippydeflippydebop7-Aug-06 5:05

flippydeflippydebop

7-Aug-06 5:05

Ahh, nice 1.. thanks Dave... I will have a look into that now

flippydeflippydebop8-Aug-06 5:32

flippydeflippydebop

8-Aug-06 5:32

question: Can i use the eMbedded Visual C++ 4.0 Sample with Visual C++ Studio 6?

David Crow8-Aug-06 5:40

8-Aug-06 5:40

I do not know. Why not try it and see?

"Money talks. When my money starts to talk, I get a bill to shut it up." - Frank

"Judge not by the eye but by the heart." - Native American Proverb

IStorage and IStream

Waldermort6-Aug-06 4:47

6-Aug-06 4:47

I have created my own Excel reader which opens and reads the compound files using the ISorage and IStream classes. Everything works perfectly, but I would like to make it a little more user friendly. Here is the code used to open the file:

WCHAR wcFilename[1024];
MultiByteToWideChar(CP_ACP, 0, filename, strlen(filename)+1, wcFilename,  1024);

IStorage *pStorage = NULL;
IStream *pStream = NULL;
HRESULT hr;

// Open the document as an OLE compound document.
hr = ::StgOpenStorage(wcFilename, NULL, STGM_READ|STGM_SHARE_EXCLUSIVE , NULL, 0, &pStorage);

if(FAILED(hr)) {
    return 0;
}

When you try to open an excel file with MS Excel, and the file is already in use, it opens it as read only. I want to add the same functionality to my code, but so far I have been unable to. StgOpenStorage always returns with the 'File unavailable' (locked) error. Does anybody know of a method of doing this?

Jörgen Sigvardsson6-Aug-06 5:40

Jörgen Sigvardsson

6-Aug-06 5:40

waldermort wrote:
When you try to open an excel file with MS Excel, and the file is already in use, it opens it as re

Ehm, remove the STGM_SHARE_EXCLUSIVE flag. Smile | :)

You're telling StgOpenStorage to open the file as read only, but you don't want to share it with anyone. Since the file is already open, you obviously can't be granted exclusive access to it.

--
The Show That Watches Back

Waldermort6-Aug-06 5:47

6-Aug-06 5:47

I have tried a variation of just about all the flags, none of which work. The STG_E_SHAREVIOLATION is returned for each. After spending quite some time searching the web for an answer I have concluded that there isn't one. However, I am going to try copying the file to the temp directory and opening it from there. This app is a simple reader, the file would not be modified in any way at all.

Waldermort6-Aug-06 6:37

6-Aug-06 6:37

Creating a temp copy of the file seems to work. For anybody with a similar problem here is the modified code:

if(FAILED(hr)) {
    if(hr == STG_E_SHAREVIOLATION ) {
        // try to make and open a copy
        char tmpPath[MAX_PATH];
        char tmpName[MAX_PATH];
        GetTempPath(MAX_PATH,tmpPath);
        GetTempFileName(tmpPath,"TMP",0,tmpName);
        if (!CopyFile(filename,tmpName,FALSE) )
            return 0;
        MultiByteToWideChar(CP_ACP, 0, tmpName, strlen(filename)+1, wcFilename,  1024);
        hr = ::StgOpenStorage(wcFilename, NULL, STGM_READ|STGM_SHARE_EXCLUSIVE , NULL, 0, &pStorage);
        if(FAILED(hr))
            return 0;
    }
    else
        return 0;
}

bob169726-Aug-06 5:55

bob16972

6-Aug-06 5:55

waldermort wrote:
Everything works perfectly, but

If I had a nickel for every time somebody said that in this forum...;P

David Crow7-Aug-06 3:50