C / C++ / MFC

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PDF View David Paul Jones3-May-01 4:56 David Paul Jones 3-May-01 4:56  Hi Does anybody know of an ActiveX, or something else, which I could use to display PDF files in the View of an SDI application I have written? Thanks in advance Dave Re: PDF View Christian Graus3-May-01 13:26 Christian Graus 3-May-01 13:26  No, but you can use IE as a control and pass it a pdf. Christian The content of this post is not necessarily the opinion of my yadda yadda yadda. To understand recursion, we must first understand recursion. Re: PDF View Paul Selormey3-May-01 17:27 Paul Selormey 3-May-01 17:27  Not really true. You can actually do it. However, it is a bit of a hack. Available methods: 1. Official Buy the Acrobat program and use the SDK. 2. Hacking! Acrobat reader actually installs two types of ocx. The real stuff with name as pdf41.ocx or pdf42.ocx depending on your machine AND a crippling version pdf.ocx as the so-called main. In some installations the pdf41.ocx/pdf42.ocx in never installed, I have still not taken the time to find the circumstances. Now, the pdf.ocx will not allow you to use the reader in your view or dialog. However, pdf41.ocx/pfd42.ocx will. The trick is to unregister the pdf.ocx and manually register the pdf41.ocx/pdf42.ocx and you can generate the C++ wrapper classes with the Visual C++ gallery or classwiz. I did this for a TeX/LaTeX IDE I was working on--an open source effort and we could not use the paid version!!! Regards, Paul. Paul Selormey, Bsc (Elect Eng), MSc (Mobile Communication) is currently Windows open source developer in Japan, and open for day job or programming contract anywhere! Re: PDF View Christian Graus3-May-01 17:31 Christian Graus 3-May-01 17:31  Sorry, I should be careful how I word things - I meant no, I don't know. Christian The early bird may get the worm, but it's the second mouse that gets the cheese. Enhanced drag and drop wfalby3-May-01 3:50 wfalby 3-May-01 3:50  I have an MDI application implemented using third-party controls. I have implemented the basic OLE drag and drop. I am stuck trying to get a tree node to expand when I hover over it. My code implements the OnDragOver, OnDrop, OnDragLeave, OnDragEnter, OnBeginDrag. The sample code uses the old style drag and drop. When I add OnMouseMove and OnTimer methods, they never get control. I have debug tracing in the various methods. I have looked at Jeff Prosise's book but have found nothing that seems similar to my situation. I have tried moving the code from OnMouseMove to OnDragOver. Then the OnTimer method does not get invoked. I have tried calling SetFocus, but that does not help either. I am a MFC novice. Can anyone point me in the right direction? Re: Enhanced drag and drop Tomasz Sowinski3-May-01 4:35 Tomasz Sowinski 3-May-01 4:35  I was able to implement this feature for OLE drag'n'drop in CTreeCtrl. I had to derive the class from COleDropTarget and override OnDragScroll method. This way I was able to handle the scrolling and expanding during the DnD. I'm including the code here, surely it will be formatted incorrectly, but may be helpful. DROPEFFECT CNavigationTree::DropTarget::OnDragScroll(CWnd *pWnd, DWORD dwKeyState, CPoint point) { DROPEFFECT dropEffect = DropEffectFromKeyState(dwKeyState); DWORD currentTicks = ::GetTickCount(); CTreeCtrl &tree = *static_cast<ctreectrl *="">(pWnd); UINT flags; HTREEITEM hti = tree.HitTest(point, &flags); if (hti != m_htiLastItem) { m_htiLastItem = hti; m_lastItemTicks = currentTicks; } if (currentTicks - m_lastTicks < DD_DEFSCROLLDELAY) { return dropEffect; } m_lastTicks = currentTicks; if (NULL != hti) { if (point.y < DD_DEFSCROLLINSET) { tree.SendMessage(WM_VSCROLL, MAKEWPARAM(SB_LINEUP, 0), NULL); return dropEffect | DROPEFFECT_SCROLL; } CRect rcClient; tree.GetClientRect(rcClient); if (point.y > rcClient.bottom - DD_DEFSCROLLINSET) { tree.SendMessage(WM_VSCROLL, MAKEWPARAM(SB_LINEDOWN, 0), NULL); return dropEffect | DROPEFFECT_SCROLL; } if (currentTicks - m_lastItemTicks > 500 && (flags & (TVHT_ONITEM | TVHT_ONITEMBUTTON)) != 0 && tree.ItemHasChildren(hti) && tree.GetItemState(hti, TVIS_EXPANDED) != TVIS_EXPANDED) { tree.Expand(hti, TVE_EXPAND); } } return dropEffect; } Tomasz Sowinski http://www.shooltz.com.pl MFC APP - Copy files from folder to a:\ Gerry3-May-01 3:45 Gerry 3-May-01 3:45  Hi guys, I have a dialog based app, that I want to copy files from one location to the a:\ The user clicks a button & the files are copied. The user has no control over the folder files that are copied. I want to be able to check that a disk is in the a:\, & then start copying the files, if the a:\ fills up, don't copy any more files, & if it's in the middle of a copy to rollback & not cancel that file copy. How best can I do this....sample code or direction to site is good. Gerry. passing formatted string as argument??? hearties3-May-01 3:37 hearties 3-May-01 3:37  Is it possible to pass formatted string to functions? //function prototype void find(CString s, int n); //code 1 //this is what I want to implement find("0=", nLevel); // do something find("1=", nLevel); // do something find("2=", nLevel); // do something // code2 // to implement the above in a for loop // can I do something like this? for (i = 0, i<=3, i++) { //blah blah find("%d=" i, nLevel); // blah blah } code 2 obviously doesnt work, but is there any other way I can implement code 1? pls help Re: passing formatted string as argument??? Igor Sukhov3-May-01 4:53 Igor Sukhov 3-May-01 4:53  Hi ! Try this: void find(CString& s, int n); for (i = 0, i<=3, i++) { //blah blah CString str ; str.Format("%d", i); find(str, nLevel); // blah blah } =========================== Is it possible to pass formatted string to functions? //function prototype void find(CString s, int n); //code 1 //this is what I want to implement find("0=", nLevel); // do something find("1=", nLevel); // do something find("2=", nLevel); // do something // code2 // to implement the above in a for loop // can I do something like this? for (i = 0, i<=3, i++) { //blah blah find("%d=" i, nLevel); // blah blah } code 2 obviously doesnt work, but is there any other way I can implement code 1? Best regards, ----------- Igor Soukhov (Brainbench/Tekmetrics ID:50759) igor_soukhov@mailru.com | ICQ:57404554 | http://siv.da.ru Re: passing formatted string as argument??? David Fedolfi3-May-01 5:54 David Fedolfi 3-May-01 5:54  try something like: void findV (LPCSTR szFormat, int nLevel,...) { va_list argList; va_start(arglist, nLevel); CString str; str.FormatV (szFormat, argList); va_end(argList); find(str, nLevel); } you can then do for (int x =0; x<3; x++) { findV("%d=", nLevel, x); } The nLevel in there makes it kind of odd. If this is an out parameter you might want to change it to a return value. capturing window messages with Visual C++ 6.0 3-May-01 0:51 3-May-01 0:51  Hello everyone!!!! I've to capture the window messages of programs in execution from my application developed in Visual C++ 6.0. I'd like to access to the window text and buttons text of any message error. How could I do this????? Thanks in advance. Re: capturing window messages with Visual C++ 6.0 Igor Sukhov3-May-01 2:46 Igor Sukhov 3-May-01 2:46  Hi ! Take a look at hooks. Best regards, ----------- Igor Soukhov (Brainbench/Tekmetrics ID:50759) igor_soukhov@mailru.com | ICQ:57404554 | http://siv.da.ru Re: capturing window messages with Visual C++ 6.0 3-May-01 4:30 3-May-01 4:30  Could you have more details in relation to your answer or sample code, please?? Thanks in advance, LuisFer. Re: capturing window messages with Visual C++ 6.0 Igor Sukhov3-May-01 4:40 Igor Sukhov 3-May-01 4:40  Using SetWindowsHookEx you should set global hook. Hook procedure should be placed in DLL. Best regards, ----------- Igor Soukhov (Brainbench/Tekmetrics ID:50759) igor_soukhov@mailru.com | ICQ:57404554 | http://siv.da.ru Re: capturing window messages with Visual C++ 6.0 Igor Sukhov3-May-01 4:40 Igor Sukhov 3-May-01 4:40  Using SetWindowsHookEx you should set global hook. Hook procedure should be placed in DLL. Use WH_CALLWNDPROC hook type to intercept messages. Best regards, ----------- Igor Soukhov (Brainbench/Tekmetrics ID:50759) igor_soukhov@mailru.com | ICQ:57404554 | http://siv.da.ru Re: capturing window messages with Visual C++ 6.0 3-May-01 5:36 3-May-01 5:36  Thank you for your previous answer, but I need more information or sample code about "Hooks" taking into account my knowledge of Visual C++. I've seen the SetWindowsHookEx function but I don't understand how to use it. Thanks in advance and best wishes, LuisFer. Re: capturing window messages with Visual C++ 6.0 Christian Graus3-May-01 13:28 Christian Graus 3-May-01 13:28  I took a look, I saw a nook, and on his head he had a hook. On his hook, he had a book, and on his book said how to cook. But a nook, can't read, so a nook can't cook, so what use to a nook is a hook cook book ? Sorry, it's early Friday.... Christian The content of this post is not necessarily the opinion of my yadda yadda yadda. To understand recursion, we must first understand recursion. Re: capturing window messages with Visual C++ 6.0 3-May-01 5:34 3-May-01 5:34  If you don't want to program, you can use the Spy++ tool with ships with VC++. You can use it to detect all messages received by the window you can inspect. Regards Luis can't get the right type of buffer to read file. hearties3-May-01 0:04 hearties 3-May-01 0:04  can't get this code working. DWORD fileLength = workFile.GetLength(); //line 1 char fileBuf[fileLength]; //line 2 workFile.Read(fileBuf, fileLength); //line 3 compiler says (all for line 2): error C2057: expected constant expression error C2466: cannot allocate an array of constant size 0 error C2133: 'fileBuf' : unknown size Re: can't get the right type of buffer to read file. Igor Sukhov3-May-01 1:08 Igor Sukhov 3-May-01 1:08  Hi ! Try this: DWORD fileLength = workFile.GetLength(); //line 1 //char fileBuf[fileLength]; //line 2 char * fileBuf = new char[fileLength]; workFile.Read(fileBuf, fileLength); //line 3 .... delete[] fileBuf; Best regards, ----------- Igor Soukhov (Brainbench/Tekmetrics ID:50759) igor_soukhov@mailru.com | ICQ:57404554 | http://siv.da.ru Re: can't get the right type of buffer to read file. hearties3-May-01 1:17 hearties 3-May-01 1:17  thanz.. that solved part of the problem.. now the compiler says that fileBuf is undeclared (line 2) *confused* Re: can't get the right type of buffer to read file. hearties3-May-01 1:22 hearties 3-May-01 1:22  correction to my previous post ... the error lies in the line: delete[] fileBuf; it says identifier undeclared. Re: can't get the right type of buffer to read file. hearties3-May-01 1:26 hearties 3-May-01 1:26  please ignore all my previous post.. the problem is fixed.. overlooked some areas.. thanz a lot for your help! I am broadcasting a message on port 53 with INADDR_BROADCAST to locate a nearest NameServer. Why no response ? 2-May-01 21:59 2-May-01 21:59  If I make the broadcast to a real nameserver it is ok. If I give INADDR_BROADCAST , no one response. Kindly help to me. Thankyou Anita Eugene CStdioFile::ReadString can't work hearties2-May-01 21:11 hearties 2-May-01 21:11  my code is below, there is no compiler error, but when i run the exe file, it says "An unknown errro occurred while accessing C:\myfile.txt" can anybody help me? CStdioFile workFile; CFileException e; CString filepath = m_tsfFilepath; if(!workFile.Open(filepath, CFile::modeWrite | CFile::shareDenyWrite, &e )) { #ifdef _DEBUG afxDump << "File could not be opened " << e.m_cause << "\n"; #endif } int pos = 0; CString workString(""); CStringArray aRegisterList; workFile.Seek(pos, CFile::begin); //position pointer to beginning of file workFile.ReadString(workString); //read the first line of text thanz in advance!

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