Re: DDX_CONTROL vs Create for Cricheditctrl and effects on Streaming - C / C++ / MFC Discussion Boards

David Crow22-Oct-09 2:41

22-Oct-09 2:41

sonualex wrote:
Iam following ur suggestions truely...thanku so much for ur patience...
Asserion faliure is showing in AFXWIN2.lnl line 881....
Dont know how to solve that...

You should start by looking at line #881 of afxwin2.inl. It is asserting that a valid window handle exists, which obviously does not.

sonualex wrote:
OnInitDialog is not allowing to keep CEdit m_edit1;

Are you declaring this variable in OnInitDialog()?

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

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Re: Cursor in edit box

sonualex26-Oct-09 1:54

sonualex

26-Oct-09 1:54

hello david .. im in right track now.. thanks for ur immense support..
now im able to limit the text.. cursor pblm is solved..
but at the same time.. i have been using CString for saving and opening the contents in edit box now how can i do that using CEdit..

hope u remembr my piece of code for OnSave and OnOpen earlier posted ....

Re: Cursor in edit box

David Crow26-Oct-09 3:05

David Crow

26-Oct-09 3:05

sonualex wrote:
...i have been using CString for saving and opening the contents in edit box now how can i do that using CEdit.

By using SetWindowText() and GetWindowText().

Re: Cursor in edit box

sonualex26-Oct-09 19:42

sonualex

26-Oct-09 19:42

thanks a lot David... it worked perfectly...
thanku so much... Smile | :)

Re: Cursor in edit box

sonualex26-Oct-09 19:43

sonualex

26-Oct-09 19:43

hi der David... it worked perfectly...
thanku so much... Smile | :)

thanks a ton Smile | :)

Visual Studio 2008 Setup Project Question ?

ERLN13-Oct-09 18:16

ERLN

13-Oct-09 18:16

I have written Installation using Visual Studio 2008 Setup project. I have created a GUI for installing specific product (using check box dialog). but I need the same gui for uninstallation also.
Means if unchecked that product should be uninstalled. all other products should remain same. any suggestion how to do it in Visual Studio 2008 setup project.I used only C++ base installation. No .net dependencies.

DDX_CONTROL vs Create for Cricheditctrl and effects on Streaming

ForNow13-Oct-09 13:47

ForNow

13-Oct-09 13:47

Hi,

I have been using DDX_CONTROL to Attach My Cricheditctrl to my resource multiline edit control

For some reason this stops the CRichedit.Streamin from working

With ::Create no problem

Was wondering if anybody had any insights

As I always like to know the reason why things work or Don't

thankx...

Re: DDX_CONTROL vs Create for Cricheditctrl and effects on Streaming

Code-o-mat13-Oct-09 20:50

Code-o-mat

13-Oct-09 20:50

Please explain what you mean by "stops from working". Does it crash, does it stop on an assert, does it simply not load the content? How and where did you try to use it?

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Sometimes you just have to hate coding to do it well. <

Re: DDX_CONTROL vs Create for Cricheditctrl and effects on Streaming

ForNow14-Oct-09 3:34

ForNow

14-Oct-09 3:34

The content doesn't load

Maybe the FrameWork expects me to use DDX

to read and write data after connecting the

resource item to the CRichEditctrl object don't

know

but If I do CRichedictrlptr *CRicheditrl =

CDialog.GetDlgItem(IDC_RICHEDIT)

I able to populate the Richedit using the

Streamin method

Re: DDX_CONTROL vs Create for Cricheditctrl and effects on Streaming

Code-o-mat14-Oct-09 5:24

Code-o-mat

14-Oct-09 5:24

ForNow wrote:
Maybe the FrameWork expects me to use DDX

to read and write data after connecting the

resource item to the CRichEditctrl object

I highly doubt that.
Could it be that maybe you are trying to load that content before DoDataExchange runned?

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Sometimes you just have to hate coding to do it well. <

Re: DDX_CONTROL vs Create for Cricheditctrl and effects on Streaming

ForNow14-Oct-09 7:05

ForNow

14-Oct-09 7:05

I have a call to the Default
CDialog::DoDataexchange

In my overridable version

Not sure what that does I'll comment that out

and See what happens

Thankx

Re: DDX_CONTROL vs Create for Cricheditctrl and effects on Streaming

Code-o-mat14-Oct-09 8:08

Code-o-mat

14-Oct-09 8:08

I believe you misunderstod something.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Sometimes you just have to hate coding to do it well. <

Re: DDX_CONTROL vs Create for Cricheditctrl and effects on Streaming

ForNow14-Oct-09 12:21

ForNow

14-Oct-09 12:21

The streamin method should work after DDX_CONTROL

I have to have a closer look at my Code

at this point I am thinking that I dont have to Call UpdateData as that is

Done automatically by the default CDialog::Oninitdialog

Which I have in my OnInitdialog

I'll take a closer look

thankx

Get OS information

includeh1013-Oct-09 10:52

includeh10

13-Oct-09 10:52

I need to get OS info,

1. name: i.e. Windows XP, WinNT 4 etc.
2. edition: i.e. Server, professional, standard etc.

The info should start from Win98 (or Win2K) and up to latest one.
- is the latest one Windows 7 now?

I have C code to show up to XP, do you have code for new OS?

Re: Get OS information

«_Superman_»13-Oct-09 11:18

«_Superman_»

13-Oct-09 11:18

Use the GetVersionEx[^] API to get the version of the running OS.
Look into the remarks section of the documentation for OSVERSIONINFOEX[^] for the list of OS codes.

«_Superman_»
I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

Binary Tree traversal

mood4813-Oct-09 6:39

mood48

13-Oct-09 6:39

Hi all,
I have a problem in implementing tree traversal using c++, i want to display the output of tree traversal: inorder, preorder, postorder in tree form, this means i should include some graphic codes so as to display the tree format on the screen. I don't have idea how to use graphics to display the output on the screen.
Please help me

Re: Binary Tree traversal

David Crow13-Oct-09 7:03

David Crow

13-Oct-09 7:03

See here.

I've also seen implementations where the tree was laying on its side. It's a recursive approach.

Re: Binary Tree traversal

Alan Balkany15-Oct-09 4:40

Alan Balkany

15-Oct-09 4:40

First you need to learn how to draw lines on the screen. If you're using MFC, look at OnDraw and the CDC class. Then you can look at writing text if you need to do that.

For arranging the binary tree on the screen, a good approach is to space the leaf nodes out evenly horizontally. Then each parent node goes halfway between its sons, on the row above.

I have problem with C for passing ARGS to main function in LINUX

Mohamed_Khalil13-Oct-09 5:50

Mohamed_Khalil

13-Oct-09 5:50

Hi guys ,

I've problem with C in Linux, and just i need to pass args to execvp(args[0],args) to the main function and after creating child process and the code is :

#include <stdio.h>
#include <string.h>
#include <signal.h>
#include <stdlib.h>
#include <sys/wait.h>
#include <sys/types.h>
#include <unistd.h>
#define MAX_LINE 80

void setup(char inputBuffer[],char *args[],int *background)
{
int i;
int cmd=0;
int l;

  
scanf("%s",inputBuffer);//input command

if("%d",strlen(inputBuffer)>80)  //check the command; if the command >80 will give an error and exit the process,otherwise it will complete the process
{
 printf("error the maximum size is 80\n"); 
exit(-1);
}

else
{
  args  = &inputBuffer;
   
  }
    

}


int main(void)
{

char inputBuffer[MAX_LINE];
int  background =0;
char *args[MAX_LINE/2+1];
char *command;


while(1)
{
background=0;
printf("Command ->");
setup(inputBuffer,args,&background);

pid_t pChild;
pChild = fork();


if(pChild <0){
printf("Error\n");
exit(-1);
}

if(pChild==0)
{ 
execvp(args[0],args);
}


else {
if(background=1);

wait(NULL);

printf("Child process completed\n");
}
exit(0);
}
}

Re: I have problem with C for passing ARGS to main function in LINUX

David Crow13-Oct-09 6:20

David Crow

13-Oct-09 6:20

So what's the problem? Confused | :confused:

dr.nokia wrote:
if("%d",strlen(inputBuffer)>80)

What's this?

dr.nokia wrote:
if(removed=1);

Your compiler should at least be warning you about this, if not outright complaining.

Re: I have problem with C for passing ARGS to main function in LINUX

Mohamed_Khalil13-Oct-09 6:25

Mohamed_Khalil

13-Oct-09 6:25

Im trying to update the args to pass into main function to (execvp) and run the command for example

ls - 1

or sh> cat pro.c

just i need to pass args to the main function to execute the command Frown | :(

Re: I have problem with C for passing ARGS to main function in LINUX

David Crow13-Oct-09 6:28

David Crow

13-Oct-09 6:28

dr.nokia wrote:
just i need to pass args to the main function...

Then you're gonna need to change its signature to:

main( int argc, char *argv[] )

Re: I have problem with C for passing ARGS to main function in LINUX

Mohamed_Khalil13-Oct-09 6:33

Mohamed_Khalil

13-Oct-09 6:33

ok! i changed the signature but the output only "Child process completed")
Frown | :(

Re: I have problem with C for passing ARGS to main function in LINUX

Mohamed_Khalil13-Oct-09 6:39

Mohamed_Khalil

13-Oct-09 6:39

by the way : if(removed =1) it's if D'Oh! | :doh:

(background=1)

Re: I have problem with C for passing ARGS to main function in LINUX

David Crow13-Oct-09 6:43

David Crow

13-Oct-09 6:43

Until you have a firmer grasp of functions, pointers, arrays, etc, you'd be better served by simplifying your code down to something like:

void main( void )
{
    execvp("ls", "- 1"); // blocks
    printf("Child process completed\n");
}

Once you get that working, then you can start using scanf() to replace the string literals.

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