dev-cpp-users — Dev-C++ users discussion list

[Dev-C++] creating new file after some time

[Patel, N. M <Nil...@qu...>]

Does anyone know the syntax to call a function that will create a new =
data file after a given time.=20
For example datafile2 will be created everyday after 20 hours or 10 =
hours. Any clue.=20




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Re: [Dev-C++] Variables in depuration that are not refreshed

[Alfred P. R. <al...@ya...>]

I've found Dev-Cpp Debug's feature kind of poor.  I've had this problem, specifically the way you describe, and I believe that the debugger gets lost between frame switches.  You can always delete the watch variable and re-enter it.  My solution is to only use the Dev-Cpp debugger for simple debugging that doesn't require variable watching, and to use either the command line GDB or the Insight GUI debugger for complex debugging that requires variable modification and things like conditional breakpoints.
 
The Insight debugger package is a significantly better tool for debugging, though it has it's own idiosyncratic bugs.  Insight does crash regularly, and bogus errors (mostly segmentation faults) crop up.  However, it's Locals window is very handy, as it shows all class variables including all of the 'this' structure in one easy to access place.  Other useful features are a variable memory dump, useful for examining memory referenced by pointers (such as structures, etc.), and a handy GUI.  The command window allows for full GDB functionality, as in the command line version of GDB.
 
To answer your second question, to modify the value of something, it must be in the Debug window, then right click on the variable to get Modify Value to come up.  You can then change it.  However, I just tried that, and initially there is no change, then I lost all watched variables.  When I again set a watch on the variable that I just changed, it had the new value.  I'm running 4.9.9.1, with the latest updates that actually work.  Much easier in the Insight debugger.
 
BTW: the above didn't work for a global structure that has individual elements.

Fernando Masanori Ashikaga <fm...@te...> wrote:
Sometimes in depuration of a program in Debug window
variables are not refreshed. For example, in a function a
int variable i have a value 2, when I returned for other
function a variable continues with value 2 beside the
scope is other (with other value for the variable)
 
Anyone have experience with this problem?
 
Tranks in advance,
Fernando Masanori
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Alfred P. Reaud
 

[Dev-C++] How I change the value of a variable in run time?

[Fernando M. A. <fm...@te...>]

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[Dev-C++] Variables in depuration that are not refreshed

[Fernando M. A. <fm...@te...>]

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[Dev-C++] Compile errors in MinGW's header locale_facets.h

[Emil B. <zrn...@ya...>]

I'm using Dev-CPP IDE with MinGW g++ compiler version 3.3.1, wxWidget GUI, and OpenCascade 5.0 - CAD kernel (actually there is also Knizhnik GOODS object database)
So, I put some header from that kernel in my header newProgramFrameApp.h i.e.:
...
#include <Graphic3d_WNTGraphicDevice.hxx>
... and then I get compile errors in MinGW's header:
... include/c++/3.3.1/bits/locale_facets.h
as you can see in compile log.
I can't realize why it happens, perhaps I missed some compiler options or flag?
 
Thanks in advance!
 
Compiler: Default compiler
Building Makefile: "H:\Projects\eCADb\Makefile.win"
Executing  make...
make.exe -f "H:\Projects\eCADb\Makefile.win" src/gui/newProgramFrameApp.o
g++.exe -c src/gui/newProgramFrameApp.cpp -o src/gui/newProgramFrameApp.o -I"H:/dev-cpp/include/c++/3.3.1"  -I"H:/dev-cpp/include/c++/3.3.1/mingw32"  -I"H:/dev-cpp/include/c++/3.3.1/backward"  -I"H:/dev-cpp/lib/gcc-lib/mingw32/3.3.1/include"  -I"H:/dev-cpp/include"  -I"H:/Projects/eCADb/inc"  -I"H:/databases/GOODS/goods-291/goods/inc"  -I"H:/Projects/eCADb/resources"  -I"H:/OpenCascade/OpenCASCADE5.0/ros/inc" -fno-rtti -fno-exceptions -fno-pcc-struct-return -fstrict-aliasing -Wall -D__WXMSW__ -D__GNUWIN32__ -D__WIN95__ -D_WIN32 -D_MING32_ -DUSE_NAMESPACES -DNDEBUG -DWIN32 -D_WINDOWS -DWNT   
....
H:/dev-cpp/include/c++/3.3.1/bits/locale_facets.h: In constructor `std::numpunct_byname<_CharT>::numpunct_byname(const char*, size_t)':
H:/dev-cpp/include/c++/3.3.1/bits/locale_facets.h:696: error: there are no arguments to `_S_create_c_locale' that depend on a template parameter, so a declaration of `_S_create_c_locale' must be available H:/dev-cpp/include/c++/3.3.1/bits/locale_facets.h:696: error: (if you use `-fpermissive', G++ will accept your code, but allowing the use of an undeclared name is deprecated) H:/dev-cpp/include/c++/3.3.1/bits/locale_facets.h:697: error: there are no arguments to `_M_initialize_numpunct' that depend on a template parameter, so a declaration of `_M_initialize_numpunct' must be available H:/dev-cpp/include/c++/3.3.1/bits/locale_facets.h: In destructor `virtual std::numpunct_byname<_CharT>::~numpunct_byname()':
H:/dev-cpp/include/c++/3.3.1/bits/locale_facets.h:703: error: there are no arguments to `_S_destroy_c_locale' that depend on a template parameter, so a declaration of `_S_destroy_c_locale' must be available H:/dev-cpp/include/c++/3.3.1/bits/locale_facets.h: In constructor `std::collate_byname<_CharT>::collate_byname(const char*, size_t)':
H:/dev-cpp/include/c++/3.3.1/bits/locale_facets.h:1077: error: `_M_c_locale_collate' undeclared (first use this function) H:/dev-cpp/include/c++/3.3.1/bits/locale_facets.h:1077: error: (Each undeclared identifier is reported only once for each function it appears in.) H:/dev-cpp/include/c++/3.3.1/bits/locale_facets.h:1077: error: there are no arguments to `_S_destroy_c_locale' that depend on a template parameter, so a declaration of `_S_destroy_c_locale' must be available H:/dev-cpp/include/c++/3.3.1/bits/locale_facets.h:1078: error: there are no arguments to `_S_create_c_locale' that depend on a template parameter, so a declaration of `_S_create_c_locale' must be available In file included from H:/dev-cpp/include/c++/3.3.1/bits/basic_ios.h:44,
                 from H:/dev-cpp/include/c++/3.3.1/ios:51,
                 from H:/dev-cpp/include/c++/3.3.1/ostream:45,
                 from H:/dev-cpp/include/c++/3.3.1/iostream:45,
                 from H:/dev-cpp/include/c++/3.3.1/backward/iostream.h:32,
                 from H:/OpenCascade/OpenCASCADE5.0/ros/inc/Standard_Stream.hxx:4,
                 from H:/OpenCascade/OpenCASCADE5.0/ros/inc/Standard_TypeDef.hxx:22,
                 from H:/OpenCascade/OpenCASCADE5.0/ros/inc/Standard_Address.hxx:16,
                 from H:/OpenCascade/OpenCASCADE5.0/ros/inc/Standard.hxx:28,                  from H:/OpenCascade/OpenCASCADE5.0/ros/inc/Graphic3d_WNTGraphicDevice.hxx:20,                  from H:/Projects/eCADb/inc/newProgramFrameApp.h:13,
                 from src/gui/newProgramFrameApp.cpp:9:


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[Dev-C++] Using Dev-C++ to create XLLs

[Erik S. <Eri...@ut...>]

Hi,

does anyone have any experience using Dev-C++ to compile XLLs (i.e. DLLs to use as add-ins for Microsoft Excel)? I've tried to compile QuantlibXL and XLW example projects with Dev-C++. After some minor modifications (such as #include-ing <stdexcept> where needed) the example code will compile. However, Excel crashes when I try to add-in the resulting DLL.  Maybe I'm getting some of the compiler settings wrong... any suggestions?

Thanks,
Erik



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Re: [Dev-C++] problem writing data to file - update

[<Bah...@ao...>]

problem solved.

Re: [Dev-C++] problem writing data to file

[Per W. <pw...@ia...>]

Note that fscanf is for reading, not writing. It is also a very dangerous
function to use, since reading strings with it have a tendancy to result
in buffer overflows ;)

/Per W

On Wed, 9 Feb 2005, Siva Chandra wrote:

>
> If you are interested in making a text file then
> fprintf and fscanf are the functions which you should
> be using. Also, if it is really a binary file that you
> are interested in creating, then use "wb" instead of
> just "w".

[Dev-C++] Problem with Editor Coloring

[<Mat...@Ve...>]

How do I get a non-white background on my code editing window without
causing the spaces between words to be syntax highlighted when I print?

So far I have been setting the background color by changing the color the
syntax highlighter uses to color the space.

I presume there must be some other way to do this that does not have the
deleterious effect on print-outs, but somehow sadly I am missing it.
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distribution or copying of this communication is strictly prohibited.
If you have received this communication in error, please notify me
immediately by replying to this message and deleting it and all
copies and backups thereof.  Thank you.

Re: [Dev-C++] FreeImage

[Jakob E. <mai...@ko...>]

Free image is a is a pure Image manipulation library.

If you want to display it you nead another API, like OpenGL.

Den 2005-02-10 00:45:56 skrev <A_B...@gm...>:

> Hi,
> I want to show a jpg file on a window.
> I want to BitBlt it to the window.
>
> With FreeImage I can load the file to memory, but how do I show it on =20
> the window ???
> BitBlt needs two handles.
> The window's handle I got, but FreeImage returns a FIBITMAP* !!!
> I tried to convert the FIBITMAP* to HBITMAP - but this doesn't work...
>
> Does someone know how to convert FIBITMAP* to HBITMAP ?????
>
> thx, Acki
>

Re: [Dev-C++] problem writing data to file

[Siva C. <siv...@ya...>]

If you are interested in making a text file then
fprintf and fscanf are the functions which you should
be using. Also, if it is really a binary file that you
are interested in creating, then use "wb" instead of
just "w".

For example, this is what you might want to do:

FILE *pFile;
char buffer[] = "???";
MonName = "RockSteady.txt"; // Lets say!!
pFile = fopen(MonName, "w");

fprintf(pFile, "%s", buffer);
fclose(pFile);

Hope this helps,
Siva Chandra.

--- Bah...@ao... wrote:

> all i need to do is write  a few variables (int's)
> to a text file. the 
> segment of data that makes the file looks like this
> :
> 
>         FILE * pFile;
>         char buffer[] = "???";
>         pFile = fopen (MonName, "w");
>         fwrite (buffer , 1 , 100 , pFile);
>         fclose (pFile);
> 
> MonName is the file's name. it turns out to be
> whatever the contents of 
> MonName are
> 
> ??? is what i need to  change
> 
> how would i make buffer[] represent :
> 
> cout << "The level is " << level << ", and the name
> is " MonName;
> The level is 1 and the monster name is Red Dragon
> 
> also, not as important, but how would i have .txt be
> placed at the end of the 
> file???
> 



		
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[Dev-C++] problem writing data to file

[<Bah...@ao...>]

all i need to do is write  a few variables (int's) to a text file. the 
segment of data that makes the file looks like this :

        FILE * pFile;
        char buffer[] = "???";
        pFile = fopen (MonName, "w");
        fwrite (buffer , 1 , 100 , pFile);
        fclose (pFile);

MonName is the file's name. it turns out to be whatever the contents of 
MonName are

??? is what i need to  change

how would i make buffer[] represent :

cout << "The level is " << level << ", and the name is " MonName;
The level is 1 and the monster name is Red Dragon

also, not as important, but how would i have .txt be placed at the end of the 
file???

RE: [Dev-C++] Dev-C++ 5 Beta 9 (4.9.9.1)

[Ronny S. <rs...@ma...>]
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[Dev-C++] FreeImage

[<A_B...@gm...>]

Hi,
I want to show a jpg file on a window.
I want to BitBlt it to the window.

With FreeImage I can load the file to memory, but how do I show it on the window ???
BitBlt needs two handles.
The window's handle I got, but FreeImage returns a FIBITMAP* !!!
I tried to convert the FIBITMAP* to HBITMAP - but this doesn't work...

Does someone know how to convert FIBITMAP* to HBITMAP ?????

thx, Acki

[Dev-C++] Dev-C++ 5 Beta 9 (4.9.9.1)

[Ronny S. <rs...@ma...>]

I just downloaded the most recent version and tried to compile the
examples.  None of the examples containing #include <iostream> could
compile.  In fact, when writing a short program which includes iostream
I could not compile it either.

Has anyone encountered that problem?

Thanks

RYS

Re: [Dev-C++] changing project linking from 'C' to 'CPP'

[Martin D. <nex...@qu...>]

seb_kramm wrote:

> Hi everybody,
>
> I'm using devcpp 4.9.9.1 and I have a problem with the linker:
> I'm using an open-source library that can be used through C or C++.
>
> My own project is 'C' type, and I get now linker errors (I just 
> changed some stuff in my code that needs now to be compiled/linked as 
> CPP).
>
> So the question is:
> How do you force Devcpp to use 'CPP' instead of 'CC', for linking, in 
> the generated makefile (through the project option dialog, I mean)
>
> Thank you. )

Hi,
Open project options, click Files tab, select the source file you want 
to compile as C++ and simply check "Compile as C++". Then just rebuild 
all and it's done.

Happy coding,
next_ghost

Re: [Dev-C++] changing project linking from 'C' to 'CPP'

[Michal M. <mi...@mo...>]

seb_kramm wrote:
> How do you force Devcpp to use 'CPP' instead of 'CC', for linking, in 
> the generated makefile (through the project option dialog, I mean)

simplest is to open the Project .dev file in notepad and change line
IsCpp=0
to
IsCpp=1

(OK, it's not through the project option dialog)

-- 
Regards,
     Michal

[Dev-C++] changing project linking from 'C' to 'CPP'

[seb_kramm <seb...@ya...>]

Hi everybody,

I'm using devcpp 4.9.9.1 and I have a problem with the linker:
I'm using an open-source library that can be used through C or C++.

My own project is 'C' type, and I get now linker errors (I just changed some stuff in 
my code that needs now to be compiled/linked as CPP).

So the question is:
How do you force Devcpp to use 'CPP' instead of 'CC', for linking, in the generated 
makefile (through the project option dialog, I mean)

If you change the file-compile settings, checking the 'compile as cpp' box, then, OK, 
the 'compile line' in the makefile looks like:
$(CPP) -c main.c -o main.o $(CXXFLAGS)

but the linker command still looks like:
$(BIN): $(OBJ)
$(CC) $(LINKOBJ) -o "my_project.exe" $(LIBS)

and it --must-- look like:
$(BIN): $(OBJ)
$(CPP) $(LINKOBJ) -o "my_project.exe" $(LIBS)

and this is what causes my linking to crash...

The only turnaround I found is  :
Solution 1: to manually change the value of the 'IsCpp' line from 0 to 1 (in the .dev 
file)
Solution 2: create a new project as cpp, and reconfigure the whole thing

These are not very satisfying.
If not possible for the moment, maybe that could be something to do for the next 
release ? (adding a check box in the 'project settings' dialog box, making it 
possible to quickly switch project type)

Thank you.

[Dev-C++] Yet another QT with Dev-C++ question

[Steven B. <st...@po...>]

Okay I have been searching both the KDE-cygwin / dev-cpp-usersarchives, 
and their respective forums, and all I can turn up is the following 
answer made over a year and a half ago:

> 2003-08-29 15:52
> * First point, Qt applications simply won"t compile
>  under Dev-C++ (using MinGW/GCC as compiler). I"d love
>  to, but this won"t work, no luck.

However to the contrary what questions I have found are in such a 
significant number that they could merit this issue as its' own entry in 
the FAQ's.

So in the interest of writing such an FAQ, as well as my desire to put 
together a properly documented how-to, can anyone please comment as to 
whether the status of integrating QT with Dev-C++ has improved at all? 
And if so, how to go about doing such a thing?

This would be of special interest in light of yesterdays announcement by 
TrollTech to dual license the upcoming QT4 for Windows so as to be GPL'd 
for non-commercial use. In addition, the folks over at KDE-cygwin have 
also nearly completed their own port of the GPL'd QT3 to windows as well.

So all of this begs the big question: Is there a way to finally 
integrate QT with Dev-C++ so as to provide those interested in 
developing GPL'd cross-platform apps with QT an opportunity to do so 
with the benefit of not having to spend the money to go out and pay for 
an expensive IDE just to write GPL'd code?

Thank you very much for your time and consideration.

Steven

[Dev-C++] Tree graph visualization software

[Jonathan P. <j_p...@ya...>]

Apache use GraphViz (http://www.graphviz.org) with doxygen to generate documentation and it seems capable of some pretty neat stuff-see 
http://xml.apache.org/xerces-c/apiDocs/inherits.html
I think it is also available as a standalone library.
Hope this helps!



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[Dev-C++] how to detect whether an application is running and kill it.

[Guillermo G. <ggu...@ma...>]

How would I detect whether an app/process is running or not and be able =
to kill it? I have a program that copies over newer versions of an =
executable but I need it to detect and/or kill it first if it is running =
on the local machine.

EX: If I am to copy lp4.exe from a network drive (Q:\), I  want to see =
if it is running first. If it is running I want to kill it and then copy =
over the newer build.

Guillermo Gutierrez
Market Scan Information Systems
Software Q.A. Supervisor
(818) 575-2000 x2427
ggu...@ma...

[Dev-C++] RE: Vis C++ compiling in Dev

[Martin D. <nex...@qu...>]

Daniel Datcu wrote:

> Hi
>  
> Is it true that projects build in Visual C++ can be compiled in DevC++ 
> or this is just an empty boast ?
> I tryed to this but it didn't worked .
>  
> DD

Hello,
Yes, just import the VC++ project file (Dev-C++ supports only VC++6 DSP 
and older files right now) and fix a "few" differences from standard 
that will be in the code.

next_ghost

[Dev-C++] Vis C++ compiling in Dev

[Daniel D. <dan...@pl...>]

Hi

Is it true that projects build in Visual C++ can be compiled in DevC++ =
or this is just an empty boast ?
I tryed to this but it didn't worked .

DD

[Dev-C++] add a third party control to a Dev-cpp program

[Ni J. <ni_...@ba...>]

Hi, All.

I am writing to seek help in regard to adding a third party control =
(such as ActiveX, OCX controls) to a Dev-cpp program. I do not have any =
idea on how to do it. If you have such experience, could you please =
share the knowledge with me?

Thank you in advance for your time and help.

Jean

[Dev-C++] False Warning "Source File not Compiled"

[Roger F. <ra...@ha...>]

Aloha from Honollulu,
    I'm using wxDevC++ which has DevC++ 4.9.9.0 and wx-beta 6.4.    I 
use the "Empty wxWidjets Project" that Malcolm Nealon kindly provided 
when I had my first problem.  I've been going through the tutorial 
"Programming with wxWindows" from the wxWidgets Documentation page. 
Things had been going fine and I've been creating new projects for each 
section of the tutorial.

The Problem:
    Sometimes I use the seperate Compile, and Run, buttons in the 
toolbar instead of the green arrow Compile & Run.  This last project I 
used the Compile button, but when I clicked on Run, I got a Warning 
window: "Source file not compiled."  I clicked on the green arrow 
Compile & Run and it compiled (again) and then ran just fine.  I tried 
Rebuild All, then Compile, and then Run, but got the message again: 
"Source file not compiled."  I looked at the Compile Log and that has 
"Compilation successful" at the bottom.
    So does anyone know what's going on?  There are only 2 files in the 
project. a .cpp and a .hpp.  No other files were open in the IDE.  Plus 
things were going fine with at least 5 other projects compiling and 
running prior to this.
Mahalo (Thank You),
Roger Furer