Re: How to get Visual C++ to use the char* forms of standard functions? - C / C++ / MFC Discussion Boards

Anthony Appleyard19-Jan-13 1:23

19-Jan-13 1:23

One of the bygone useful features of the ancient days before DOS programming vanished, was ability, when I wanted to calculate something quickly, to quickly write a program where control started at the beginning and ran down the text like in a knitting pattern and and I did not have to catch Windows messages and events. A short example follows at the end of this message. Please, how can I use Visual C++ to write and run such a program, and how to run it? (I have Windows Vista).

#include <stdio.h>
#include <std.h>
int F; char s[256],*nl="\n";
void v(int i,int j){sprintf(s,"%1d,%-3d %c%c%c%c ",i,j,0xc0,j,i,0xc0);
    write(F,s,11);}
main(){int i,j; F=open("t$$",0x8002);
for(j=0;j<=84;j++) v(4,j); write(F,nl,1);
for(j=0;j<=34;j++) v(5,j); write(F,nl,1);
for(j=0;j<=234;j++) v(6,j); write(F,nl,1);
close(F);}

Re: Writing a non-Windows program

Richard MacCutchan19-Jan-13 1:35

Richard MacCutchan

19-Jan-13 1:35

Just set your project to "Console application".

How to get Visual C++ to use the char* forms of standard functions?

Anthony Appleyard19-Jan-13 1:15

Anthony Appleyard

19-Jan-13 1:15

I am writing a Visual C++ program, using features from an from an older Visual C++ program which I wrote. How can I (for example) get the compiler to use the version of the standard function GetFileName(.....) which needs a char* parameter rather than the version which needs a WCHAR* parameter?

Re: How to get Visual C++ to use the char* forms of standard functions?

SajeeshCheviry19-Jan-13 1:29

SajeeshCheviry

19-Jan-13 1:29

Actualy i don't understand your problem. will you please eloborate?

Re: How to get Visual C++ to use the char* forms of standard functions?

Richard MacCutchan19-Jan-13 1:34

Richard MacCutchan

19-Jan-13 1:34

See my answer.

Re: How to get Visual C++ to use the char* forms of standard functions?

Richard MacCutchan19-Jan-13 1:33

Richard MacCutchan

19-Jan-13 1:33

Check the project settings in your application, and if the Character Set says Unicode, switch to MBCS or Not Set. Alternatively use a properly constructed Unicode parameter.

Re: How to get Visual C++ to use the char* forms of standard functions?

SajeeshCheviry19-Jan-13 1:37

SajeeshCheviry

19-Jan-13 1:37

Oh. good richard.

Re: How to get Visual C++ to use the char* forms of standard functions?

Anthony Appleyard19-Jan-13 12:06

Anthony Appleyard

19-Jan-13 12:06

Thanks.

For beginners introduction to CFormView, CView ?

bosfan18-Jan-13 11:04

bosfan

18-Jan-13 11:04

Hi Community,
is there a Article about CFormView, CView, CListView etc. for Beginners?
I always work with dialog based Applications, so i don’t have any experience with this Classes.
Any help would be great for me.
Here i like to thanks to all who help me before in my problems Smile | :)

.

regards
bosfan

Re: For beginners introduction to CFormView, CView ?

Jibesh18-Jan-13 13:36

Jibesh

18-Jan-13 13:36

Yes. there are many article available in CP under Document/View section check these links
http://www.codeproject.com/KB/docview/[^]

MFC Document/View documentation and enhancements[^]
Creation of Multiple Dynamic Views[^]

Jibesh V P

Re: For beginners introduction to CFormView, CView ?

bosfan18-Jan-13 22:51

bosfan

18-Jan-13 22:51

Hi,
thanks for Answer and the URLs.

Best regards
bosfan

Re: For beginners introduction to CFormView, CView ?

SajeeshCheviry19-Jan-13 1:28

SajeeshCheviry

19-Jan-13 1:28

Hi bosfan there are some extra article related to CFormView, CView in code projects are
1. How to print CFormView
2. ResizableFormView
related to CView
1. Replacing a view in a doc-view application
2.CView Access From Anywhere
thanks

Re: For beginners introduction to CFormView, CView ?

bosfan19-Jan-13 4:38

bosfan

19-Jan-13 4:38

Hi,
thanks for sharing this url's Thumbs Up | :thumbsup:

bosfan

Re: For beginners introduction to CFormView, CView ?

SajeeshCheviry19-Jan-13 7:37

SajeeshCheviry

19-Jan-13 7:37

welcome

Using the OpenFileDialog in Console?

Member 975216818-Jan-13 7:01

Member 9752168

18-Jan-13 7:01

Hello.

I just wrote a code in C++. It should calculate something but for it we need a external File. Now I have to type in the whole Path. That's annoying.
Is there a possibility to open an "openfiledialog"?

Now I have this code copied but it won't work-.-:

C++

OPENFILENAME ofn;       // common dialog box structure
char szFile[1000];       // buffer for file name
HWND hwnd = GetConsoleWindow();              // owner window
HANDLE hf;              // file handle

//Initialize OPENFILENAME
ZeroMemory(&ofn, sizeof(ofn));
ofn.lStructSize = sizeof(ofn);
ofn.hwndOwner = hwnd;
ofn.lpstrFile = szFile;
ofn.nMaxFile = sizeof(szFile);
ofn.lpstrFilter = "All\0*.*\0Text\0*.TXT\0";
ofn.nFilterIndex = 1;
ofn.lpstrFileTitle = NULL;
ofn.nMaxFileTitle = 0;
ofn.lpstrInitialDir = NULL;
ofn.Flags = OFN_PATHMUSTEXIST | OFN_FILEMUSTEXIST;

// Display the Open dialog box.

if (GetOpenFileName(&ofn)==TRUE)
    hf = CreateFile(ofn.lpstrFile, GENERIC_READ,
        0, (LPSECURITY_ATTRIBUTES) NULL,
        OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL,
        (HANDLE) NULL);

Can you see there any mistakes or can you post a better code for it?
Is there even a possibility for it, but without using MFC or .NET?

Greets

PS: Sorry for my bad english. I'm from Germany.

modified 18-Jan-13 13:39pm.

Re: Using the OpenFileDialog in Console?

jeron118-Jan-13 7:32

jeron1

18-Jan-13 7:32

What does won't work mean?

Re: Using the OpenFileDialog in Console?

Member 975216818-Jan-13 7:38

Member 9752168

18-Jan-13 7:38

oh sry. I meant it doesn't work.

The compiler runs the Code and I get no errors. But it doesn't show the OpenFileDialog. Only the next command.

Re: Using the OpenFileDialog in Console?

jeron118-Jan-13 8:07

jeron1

18-Jan-13 8:07

So you're getting to the CreateFile() method?

Re: Using the OpenFileDialog in Console?

Member 975216818-Jan-13 8:33

Member 9752168

18-Jan-13 8:33

Just copied another code of the initalizon of the OPENFILENAME structure and it worked.

HELP: how to load satellite DLL for a DLL

andwan018-Jan-13 5:54

andwan0

18-Jan-13 5:54

I have a Visual C++ workspace that has 2 projects (1 exe & 1 DLL).

I used Serge Wautier's tutorial ( Resource DLLs and Language Selection Menu[^] ) to create (multi-language) resource DLLs (satellite DLLs) branching off the exe.

Now I have a collection of strings in the DLL that are shared in other projects. I created a satellite DLL for that DLL but can't figure out how to load it on-demand just like the exe's satellite DLL.

He used:
HINSTANCE hDll = LoadLibrary(szFilename);
AfxSetResourceHandle(hDll);

void CLanguageSupport::UnloadResourceDll()
{
if (m_hDll!=NULL)
{
SetResourceHandle(AfxGetApp()->m_hInstance); // Restores the EXE as the resource container.
FreeLibrary(m_hDll);
m_hDll= NULL;
}
}

etc etc for the unloading/loading satellite DLLs for the exe.
but how to do the same for the DLL?

Re: HELP: how to load satellite DLL for a DLL

andwan021-Jan-13 22:46

andwan0

21-Jan-13 22:46

I think I got it working:

From VC2005 there's a function called AddResourceInstance() to chain DLLs. However am still using VC6 so this function doesn't exist.

So I just copied some code from a DLL project. The DLL main file contains these lines:

C++

static AFX_EXTENSION_MODULE NEAR extensionDLL = { NULL, NULL };
DllMain(HINSTANCE hInstance, DWORD dwReason, LPVOID lpReserved)
{
    AfxInitExtensionModule(extensionDLL, hInstance);
    new CDynLinkLibrary(extensionDLL);
}

This dynamically loads the DLL. If we put some of this code into the EXE project like so:

C++

HINSTANCE hDll2 = LoadLibrary(szFilename2);
AfxInitExtensionModule(extensionDLL,hDll2);
new CDynLinkLibrary(extensionDLL);

After the AfxSetResourceHandle(hDll); //setting satellite DLL overriding EXE resources

Originally, the EXE would be the resource container, but AfxSetResourceHandle(satelliteDLL) will set loaded DLL as default resource container, overriding the EXE like.

We use the above extension DLL to chain (add-on) another resource DLL.

The only issues now is freeing the library/memory..

Compiling libexif 0.6.21

Sharath C V17-Jan-13 18:19

Sharath C V

17-Jan-13 18:19

I am trying to compile libexif. Basically I have a requirement to read exif data from jpg.

In the README-win32.txt it is written as: "hack yourself a build system somehow. This seems to be the Windows way of doing things."! Smile | :)

I installed MinGW and Msys. I am able to get the Msys prompt. It ends up in a "$" prompt. I tried changing directory to where I have the libexif code from within this prompt unsuccessfully. My compile system is Win 7. msysCORE version is 1.0.11.

Re: Compiling libexif 0.6.21

CPallini17-Jan-13 21:55

CPallini

17-Jan-13 21:55