Re: getting to a bitmap resource - C / C++ / MFC Discussion Boards

dazinith11-Sep-02 3:58

11-Sep-02 3:58

hio!

i have a split view that i am using, and whenever i replace any view i set the documents title.. the problem is that when i click inside of a field in any of these views the title somehow gets set to the filename of the document (which i beleive is the default of CDocument::SetTitle)

any suggestions? here is an example of how im setting the title:

void CMainFrame::ShowHeader()
{
	CView* pView = GetActiveView();
	CMyDoc* pDoc = (CMyDoc*)(pView->GetDocument());
	m_wndSplitter.ReplaceView(0,0,RUNTIME_CLASS(CHeaderView),CSize(500,HEADERHEIGHT), pDoc);
	SetDocTitle(pDoc, pDoc->m_pComp, pDoc->m_pLoc); // set the title appropriately
	m_wndSplitter.LockBar(false);
}

the SetDocTitle() just calls the document's set title function with it formatted the way i want it to look..

-dz

CDHtmlDialog detecting NewWindow

Anonymous11-Sep-02 3:52

Anonymous

11-Sep-02 3:52

Hi,
Iam using CDhtmlDialog class.
How can I trap newWindow ?.

Iwant open the new window using my own browser dialog not the IE browser.

Thanks

Open Saved Document

Anonymous11-Sep-02 2:53

Anonymous

11-Sep-02 2:53

I have a COM dll and I am using the libs from Office 2000. When the user hits a button, I open Word. When I open word, sometimes there is text that the user wants to edit so I put the text in a file, then put this filename in the CreateProcess function call so that Word will open this file. But I am having on irritating issue. Every time I do this with Office 2000, I keep getting the messagebox "Do you want to revert to the saved document" right when Word opens. I have tried several things and nothing seems to work so that this message box doesn't appear and Word just goes ahead and opens the file like I want it to. Does anyone have any idea how I can stop this messagebox, do you think there is something wrong with the way I am opening Word, or perhaps is there something wrong with the way I am saving the word document??????

getting to a bitmap resource

ns11-Sep-02 2:54

11-Sep-02 2:54

I have a bitmap resource in my MFC MDI app. I want to show the bmp in my third party image control which takes a pointer to the bitmap (header and all). How do I get a hold of the pointer to the bmp from the resource?
Thanks,
ns

Re: getting to a bitmap resource

Tomasz Sowinski11-Sep-02 2:56

Tomasz Sowinski

11-Sep-02 2:56

ns wrote:
I want to show the bmp in my third party image control which takes a pointer to the bitmap (header and all).

You mean the BITMAPINFOHEADER? Then use LoadImage with LR_CREATEDIBSECTION flag.

Tomasz Sowinski -- http://www.shooltz.com

To some its a six-pack, to me it's a support group

Re: getting to a bitmap resource

ns11-Sep-02 3:05

11-Sep-02 3:05

The image control expects a pointer to the start of the image: It gets it from disk with stuff like:

pFile = fopen(strFile, "rb");

    if(pFile == 0) // open failed ?
    {


        return 0;
    }


    fseek(pFile, 0, SEEK_END);

    int fileSize = ftell(pFile);

    fseek(pFile, 0, SEEK_SET);

    if(pImage ==NULL) return fileSize;


    fread(<code>pImage</code>, fileSize, 1, pFile);

    pImage[fileSize] = 0; // Put a 0 char at the end

    fclose(pFile);

What I want to extract from the bitmap resource is the pImage
Thanks so much,
ns

Re: getting to a bitmap resource

Tomasz Sowinski11-Sep-02 3:08

Tomasz Sowinski

11-Sep-02 3:08

So you'll need extra BITMAPFILEHEADER before DIB section. Sooner or later your image control will need a handle to DIB or DDB. Are you absolutely sure your control only loads .bmp files?

Tomasz Sowinski -- http://www.shooltz.com

To some its a six-pack, to me it's a support group

Re: getting to a bitmap resource

ns11-Sep-02 3:22

11-Sep-02 3:22

No, it takes jpegs and tiffs too but it uses the same strategy (fread) and processes the pre-DIB section information in itself. But I have a bmp to deal with. I've not read up on DIB, DDB etc, and am learning as I go along. So I guess (sorry if I'm being unbelievably dense), what I want is somehow to get the pImage out from the resource. Is there something like:

char* pImage = Somefunction(IDB_BMP1);

Any links would be great. Meanwhile I'm hurrying along with my background reading. I did find how to get (I hope it works) to get at the colortable:

HGlobal pBMP =  ::LoadResource(NULL, ::FindResource(NULL, MAKEINTRESOURCE(ID), RT_BITMAP));

PBITMAPINFO pBMInfo = (PBITMAPINFO) (pBMP + sizeof(BITMAPFILEHEADER));

int bitCount = 8;
int clrUsed = 0; // use all 2^8

if (pBMInfo->bmiHeader.biBitCount != bitCount ||
    pBMInfo->bmiHeader.biClrUsed  != clrUsed    ) // return with no changes if not right size
    return;


memcpy(pPalette, pBMInfo->bmiColors, (4*clrUsed));

I havent tried it out yet. Surely this pBMP is not what I'm looking for? I need a char* back, and not sure what to do with an HGlobal.

Re: getting to a bitmap resource

Tomasz Sowinski11-Sep-02 3:43

Tomasz Sowinski

11-Sep-02 3:43

The code you've posted isn't correct. The bitmaps stored as resource doesn't have BITMAPFILEHEADER structure; they start with BITMAPINFOHEADER.

You'll have to create a memory buffer and copy BITMAPFILEHEADER followed by stuff loaded with LoadResource call.

Tomasz Sowinski -- http://www.shooltz.com

To some its a six-pack, to me it's a support group

Re: getting to a bitmap resource

ns11-Sep-02 4:18

11-Sep-02 4:18

Okay. Thanks. A little digression. I removed the offset for the fileheader and tried to access the color table like this: but no luck!

char* pBMP = (char*) ::LoadResource(NULL, ::FindResource(NULL, MAKEINTRESOURCE(IDB_BITMAP1), RT_BITMAP));

PBITMAPINFO pBMInfo = (PBITMAPINFO) (pBMP );//+ sizeof(BITMAPFILEHEADER));


int bitCount = 8;
int clrUsed = 0; // use all 2^8

if (pBMInfo->bmiHeader.biBitCount != bitCount ||
    pBMInfo->bmiHeader.biClrUsed  != clrUsed    ) // return with no changes if not right size
    return;



memcpy(pPalette, pBMInfo->bmiColors, (4*clrUsed));

What am I doing wrong? THanks for all this help!

Re: getting to a bitmap resource

Tomasz Sowinski11-Sep-02 4:23

Tomasz Sowinski

11-Sep-02 4:23

clrUsed is zero. 4 * clrUsed is zero as well.

Tomasz Sowinski -- http://www.shooltz.com

To some its a six-pack, to me it's a support group

thanks!!

ns11-Sep-02 4:37

11-Sep-02 4:37

Yikes. I needed to bitshift it to 256. Many thanks. It looks good now. A big problem resolved!

Big Grin | :-D

Mapnetwork drive?

Jawache11-Sep-02 2:22

Jawache

11-Sep-02 2:22

How do you execute the MapNetwork drive wizard? (and disconnect drive)

Is there any other method than trying to simulate a context menu command on MyComputer?

Asim Hussain
e: asim@jawache.net
w: www.jawache.net

Re: Mapnetwork drive?

Richard Jones11-Sep-02 4:18

Richard Jones

11-Sep-02 4:18

BOOL CAMIDoc::MountNetworkDrive()<br />
{<br />
   CString sDrive;<br />
<br />
   BeginWaitCursor();<br />
   while (TRUE)<br />
   {<br />
      // Check if \\APPS1\data is mounted<br />
      if( (_access( "\\\\apps1\\data", 0 )) == -1 )<br />
      {<br />
         CDriveMountDlg  dlg; // copy of Windows "get password for drive" dialog<br />
         int response = dlg.DoModal();<br />
         if (response == IDCANCEL)<br />
            return FALSE;<br />
<br />
         NETRESOURCE resource;<br />
         resource.dwType = RESOURCETYPE_ANY;<br />
         resource.lpRemoteName = "\\\\apps1\\data";<br />
         resource.lpProvider = NULL;<br />
<br />
         int nDrive = 4;<br />
<br />
         sDrive.Format("%c:", nDrive + 'A');<br />
         resource.lpLocalName = sDrive.GetBuffer(2);<br />
<br />
         DWORD result = WNetAddConnection2(&resource, (LPCSTR)dlg.m_sPassword, NULL, 0);<br />
         if (result == ERROR_INVALID_PASSWORD)<br />
         {<br />
            AfxMessageBox("Invalid password. Aborting");<br />
            return FALSE;<br />
         }<br />
<br />
         while ((result != 0) && (nDrive < 25))<br />
         {<br />
            nDrive++;<br />
            sDrive.Format("%c:", nDrive + 'A');<br />
            result = WNetAddConnection2(&resource, (LPCSTR)dlg.m_sPassword, NULL, 0);<br />
         }<br />
<br />
         if (result != 0)<br />
         {<br />
            AfxMessageBox("Unable to mount a drive. Please check password and ensure you have a free drive letter. Aborting.");<br />
         }<br />
         else<br />
         {<br />
            m_sDrive = sDrive;<br />
            m_bMountFlag = TRUE;<br />
            break;<br />
         }<br />
      }<br />
      else<br />
         break;<br />
   }<br />
<br />
   EndWaitCursor();<br />
   return TRUE;<br />
}<br />
<br />
BOOL CAMIDoc::DismountNetworkDrive()<br />
{<br />
   if (m_bMountFlag)<br />
   {<br />
      DWORD result = WNetCancelConnection2(m_sDrive, 0, TRUE);<br />
      if (result != NO_ERROR)<br />
      {<br />
         result = GetLastError();<br />
         if (result == ERROR_BAD_PROFILE)<br />
         {<br />
            m_bMountFlag = FALSE;<br />
         }<br />
         else if (result == ERROR_CANNOT_OPEN_PROFILE)<br />
         {<br />
            m_bMountFlag = FALSE;<br />
         }<br />
         else if (result == ERROR_DEVICE_IN_USE)<br />
         {<br />
            m_bMountFlag = FALSE;<br />
         }<br />
         else if (result == ERROR_EXTENDED_ERROR)<br />
         {<br />
            m_bMountFlag = FALSE;<br />
         }<br />
         else if (result == ERROR_NOT_CONNECTED)<br />
         {<br />
            m_bMountFlag = FALSE;<br />
         }<br />
         else if (result == ERROR_OPEN_FILES)<br />
         {<br />
            m_bMountFlag = FALSE;<br />
         }<br />
         return FALSE;<br />
      }<br />
   }<br />
   return TRUE;<br />
<br />
}

Equivalent of LineScroll for CStatics?

Joaquín M López Muñoz11-Sep-02 2:22

Joaquín M López Muñoz

11-Sep-02 2:22

I've got a CStatic with more text than gets into the window, and would like to make the text scroll programmatically. CEdits do have LineScroll which do precisely what I want, but alas this method is not available for static controls. Does anyone know some custom-made routine or anything to achieve this behavior? The thing can be replicated with CWnd::SCrollWindow and all that stuff, but details are clumsy and maybe someone has already done the work Smile | :)

Thanx

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Equivalent of LineScroll for CStatics?

Tomasz Sowinski11-Sep-02 2:30

Tomasz Sowinski

11-Sep-02 2:30

Is read-only edit control an option?

Tomasz Sowinski -- http://www.shooltz.com

To some its a six-pack, to me it's a support group

Re: Equivalent of LineScroll for CStatics?

Joaquín M López Muñoz11-Sep-02 2:33

Joaquín M López Muñoz

11-Sep-02 2:33

It's almost an option, but notentirely: this way, the cursor appears, and I don't like any cursors around. Also, disabling the edit control gets me almost there, but the text is grayed and I want it black (do you know how to change this?).

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Equivalent of LineScroll for CStatics?

Tomasz Sowinski11-Sep-02 2:41

Tomasz Sowinski

11-Sep-02 2:41

Joaquín M López Muñoz wrote:
this way, the cursor appears, and I don't like any cursors around

You mean the insertion point cursor, right? So maybe handling WM_SETCURSOR will get rid of this problem?

Tomasz Sowinski -- http://www.shooltz.com

To some its a six-pack, to me it's a support group

Re: Equivalent of LineScroll for CStatics?

Joaquín M López Muñoz11-Sep-02 2:45

Joaquín M López Muñoz

11-Sep-02 2:45

I tried, and it doesn't seem to work (the docs says one should return TRUE from the parent to stop further processing to the childs). Anyway, I guess this has to do with the mouse rather than the text cursor.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Equivalent of LineScroll for CStatics?

Tomasz Sowinski11-Sep-02 2:51

Tomasz Sowinski

11-Sep-02 2:51

Joaquín M López Muñoz wrote:
the docs says one should return TRUE from the parent to stop further processing to the c

So you handled WM_SETCURSOR in parent right? Maybe you should add handler in edit clas, do not call base class implementation and just set cursor to standard arrow instead?

Tomasz Sowinski -- http://www.shooltz.com

To some its a six-pack, to me it's a support group

Re: Equivalent of LineScroll for CStatics?

Joaquín M López Muñoz11-Sep-02 2:52

Joaquín M López Muñoz

11-Sep-02 2:52

Have just tried it, returning TRUE and FALSE --nothing. I guess this message has nothing to do with text cursors, but rather it is suposed to handle mouse icons and stuff.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: Equivalent of LineScroll for CStatics?

Tomasz Sowinski11-Sep-02 2:58

Tomasz Sowinski

11-Sep-02 2:58

Wait - what do you mean by 'text cursor'? A caret? This blinking | thing? In this case, you'd have to probably handle WM_SETFOCUS (or EN_SETFOCUS) and call HideCaret.

Tomasz Sowinski -- http://www.shooltz.com

To some its a six-pack, to me it's a support group

Re: Equivalent of LineScroll for CStatics?

Joaquín M López Muñoz11-Sep-02 3:03

Joaquín M López Muñoz

11-Sep-02 3:03

Yes, I refer to the | blinking thing. I've finally found a solution: it doesn't involve handling those messages, but rather cheating the system with the enabling/disabling thing by handling WM_ENABLE. I found this trick here[^].

Thank you very much for your efforts. Keep the good work helping people here at CP!

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Quitting a wizard from within OnWizNext..

BigBear11-Sep-02 2:20

BigBear

11-Sep-02 2:20

I'm not to sure there is a way to do this easily, Basically within my OnWizNext I validate data, if this fails, I want to drop out of the wizard process for the user to modify data. I was hoping to be able to call OnCancel() however this doesnt work, has anyone any ideas?

Re: Quitting a wizard from within OnWizNext..

Simon.W11-Sep-02 3:35

Simon.W

11-Sep-02 3:35

Popup a messagebox, tell some data error and return without call base class
overload function "OnWizNext"

I am seeking...
For what?
Why did you ask me for what? I don't know!

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