Comments by 01.mandar (Top 47 by date)

thank enhzflep i have use different method but i dont know how much better performance it would give
what i am doing in my win32 application is creating a window and its wndproc i am catching events and performing relevant function from dll
..
..

WM_PAINT:
OnPaintFromDll();
...
..


i feel that my solution is not efficient..
searching for better solution :)

hi
i have opengl win32 code.
i modified the above code to make dll and the main function(hinst,hprevinst,NULL,NULL) to
newcallToMain(hinst,NULL,NULL,NULL)

which i pass handle of loadlibrary
now it shows 2 windows
1. my Application MDI window(which one i want to embed with)
2. its own (as i am calling complete main code)

the problem is
i can create a window in my application and pass handle to new main but while registering i have given different wnd proc how can i change that;

Thanks John, actually to overcome this problem now i assigned an ID to every window i have created, these id helped me in manage there size events.
i would surely move to MFC :)

Thanks It worked :)

i had created a application some what like

namespace TestApp
{
public partial class MainWindow
{
A ob = new A();
B ob2 = new B();
}

public class A
{}
public class B
{}
public class Exchange
{}
}

every thing was running fine..
now suddenly i have to add some functionality in Exchange class like access some UI element(which even was working fine) but it starting to become hectic to manage many elements and data structure as the dependency started to grow on main class

is it a better approach like

___placing all classes in main class
namespace
{
public partial class MainWindow
{
A ob = new A();
B ob2 = new B();

public class A
{}
public class B
{}
public class Exchange
{}

}
}

or make distribute class operation into small function


namespace
{
public partial class MainWindow
{
//// all share variables


void fun_A
{}
void fun_B
{}
void Exchange_fun1()
{}
void Exchange_fun2()
{}

}
}


which approach will be better ?

.

Perfect
even tried with
extern "C" TESTDLL_API char* __stdcall init_set1(char*);
and it worked too
a new project with above code worked fine thanks , i still don't know what i was missing.
is it that in dll code the last line should have newline in it

tried compiling with Gz option but still giving decorated name

well when i checked in dependency walker
i dont know but some function are still exported as c++

E
C | extern "C" MYDLL_API char * Reader();
C | extern "C" MTDLL_API int init();
C++| extern "C" MTDLL_API int init_set(char*);
C++| extern "C" MTDLL_API int init_base();

if decorated option is checked
E
C | Reader;
C | init
C++| ??init_set@@YAPADD@Z
C++| ??init_base@@YAHXZ

i cant figure out why this function are still decorated when i used extern c

#ifdef MYDLL_EXPORTS
#define MYDLL_API __declspec(dllexport)
#else
#define MYDLL_API __declspec(dllimport)
#endif

extern "C" MYDLL_API char * Reader(); (i need to figure out this too)
extern "C" MTDLL_API int init();
extern "C" MTDLL_API int init_set(char*);
extern "C" MTDLL_API int init_base();

i have tried the code above and some more possibilities
http://msdn.microsoft.com/en-us/magazine/cc164193.aspx#S2

but still have error "An unhandled exception of type 'System.EntryPointNotFoundException' occurred in usedll.exe
Additional information: Unable to find an entry point named 'init_set' in DLL 'MYDLL.dll'."

==================================================
Function Name : int __cdecl inti_set(char *)
Address : 0x10026708
Relative Address : 0x00026708
Ordinal : 1 (0x1)
Filename : MYDLL.dll
Full Path : D:\GSM\usedll\bin\Debug\MYDLL.dll
Type : Exported Function
==================================================

==================================================
Function Name : int __cdecl inti_base(void)
Address : 0x1002609b
Relative Address : 0x0002609b
Ordinal : 2 (0x2)
Filename : MYDLL.dll
Full Path : D:\GSM\usedll\bin\Debug\MYDLL.dll
Type : Exported Function
==================================================

==================================================
Function Name : Reader
Address : 0x10026307
Relative Address : 0x00026307
Ordinal : 3 (0x3)
Filename : MYDLL.dll
Full Path : D:\GSM\usedll\bin\Debug\MYDLL.dll
Type : Exported Function
==================================================

==================================================
Function Name : init
Address : 0x1002704a
Relative Address : 0x0002704a
Ordinal : 4 (0x4)
Filename : MYDLL.dll
Full Path : D:\GSM\usedll\bin\Debug\MYDLL.dll
Type : Exported Function
==================================================

#ifdef MYDLL_EXPORTS
#define MYDLL_API __declspec(dllexport)
#else
#define MYDLL_API __declspec(dllimport)
#endif

extern "C" MYDLL_API char * Reader(); (i need to figure out this too)
extern "C" MTDLL_API int init();
extern "C" MTDLL_API int init_set(char*);
extern "C" MTDLL_API int init_base();

int init_set(char* id)
{
char fire[100]={0};

strcat(fire,"AT+AIPO=");
strcat(fire,id);
// some more strcat parameters

if(sp_writer(fire))
return 0;
else
return 1;
}

Thanks all of you
when i did GetCommState() DCB was populated with garbage values
baudrate as 1200 and binary to TRUE rest all was set to 0

i dont know why it is necessary to do GetCommState() before SetCommState() why cant we directly set values.

if some one pulled serial cable when the code is running GetLastError() is 995.
how can i close all handles safely because i have done same application in c#.net and it gives "Safe handle has been closed" and crashed

hi
it fails at SetCommState(htoCOM, &dcb_ob)
i tried different combination in dcb_ob setting but it still fails

i have hardcoded DCB struct size because in some forum they have said problem is because of 64bit machine so they suggested me to give value in multiples of 8

on ReadTimeout i wait for some time and recheck for any data on port on Bluetooth.
problem occurs when the code is running and Bluetooth serial dongle is removed
event occurs is "the device does not recognize the command"
so i need to close the thread which reads data on serial port and restart thread after some time.

may be http://msdn.microsoft.com/en-us/library/ff728835.aspx

thanks :)
plug and play documents helped me in solving COM port detection.

i am using WM_DEVICECHANGE to detect hardware
after that i want to check if it is the same bluetooth device which i want to install (i dont know how it can be done though)
may be i need to enter device information in registry during install process
i have written a code which does Bluetooth communication (works correctly if device is install)


need some pointers to know the process of installing a device manually....

Comment moved to original question.

oh! that was a typing mistake it was LpValueElement1 in place of LpValueElement2 :)

how can we detect heap corruption..? (possible due to malloc ,tried to free() but didn't worked)
what points i have to consider

how can we detect heap corruption..? (possible due to malloc ,tried to free() but didn't worked)
what points i have to consider

RegEnumKeyEx, RegQueryInfoKey worked for me Thanks

second link was helpful

actually it works fine when server and client are in local network.
problem begins when the client is in local network and server is on different network connected to internet.
i just want to bypass router to communicate tcp port on remote device

thanks graham that worked !!
i am trying to load dll using JSctypes i hope it should not create any problem..

anyways thanks you saved lot of work.. :)

thanks graham
my .exe and .dll(_stdcall) has same working code for serial port communication

i had created deployment setup from Visual Studio 2010 itself.
i tried coping 3 required dll file in setup
advapi32.dll, Kernel32.dll, msvcr90d.dll and my exe application as shown by dependency walker tree.

i have installed Platform SDK for win XP and WIN 7 both
i want to make it for winXP (my dll has lib function from WinXP Platform)

can i link statically all the dependent modules at compile time itself?

:) Yes it was first but was solved luckily

\x1A is crtl+z which was given in the documentation. previously i was following general manual i thought it was same for all device.

i added ...\r\n\n" extra \n at the mobile number string and it worked :)

Thanks for the support Olivier Levre :)

i have attached \x1A at the end of the message and have transmitted to port it does not work,But NOW when i open hyper terminal and type AT and press enter it gives me > to write message and press crtl+z so it sends but the message is same which i have wrote in code and not on >....

is \x1A correct taken by port how can i find it?


thanks again

Thanks the code worked flawless on changing USB-Serial cable with above changes.
Thanks Olivier Levrey and Stephen Wiria

Thanks the code worked flawless on changing USB-Serial cable with above changes.
Thanks Olivier Levrey and Stephen Wiria

ReadFile() gives output ATTTTTTTTT if done in loop
Device is not taking Values in the file for processing, is any problem in my device
Am i giving Correct values to WriteFile()?

hi
i have put the delay after transmission same as you said and kept readFile in loop for 10 times

it gives me ATTTTTTTTT

i have added a sleep after transmission

Sleep(15000);

but same result getting AT as output after adding delay

oh thanks,
the above code is for transmission of AT command from my code to GSMDevice. it transmits but when ReadFile() is executed it gets the same command as i have given in writeFile() My device is not executing the AT commands.
i have tried different DCB and timeouts configuration but same condition.

i have placed my dll in same folder as above (even tried with sys folders)

i don't know how to register dll on new machine (is it REGSVR kinda..)

it runs on my machine without any error.
i have also made the folder RW form root of C:
i am running windows 7 with minimal security now when i port my code to second machine ie.windows XP which doesn't have security as compared to win 7 so i think security may not be causing any problem.
browser part :
i have reduced security in IE too.. (may be i need to change more option in IE which i don't know ) :)

i have seen some pdf sdk but they are mostly in .NET or for trial/demo basis
i will continue looking more for c++ or java

i have seen 2 library
zlib in c++
Pdfbox in java
coding for both mostly work on unencrypted pdf
my difficult is the pdf encryption
it just creates blank txt file when encrypted pdf is passed

user inputs are pdf path ,password ,txt file
i need to decrypt pdf by user password
how to decrypt stream ?
will inflate() versions be useful

is above possible to do in zilb?