String obtained from getwindowtext(); - C / C++ / MFC Discussion Boards

Re: Windows Forms Application C++ .net 2003

Stuart Dootson1-Jun-09 3:30

Stuart Dootson

1-Jun-09 3:30

And there's nothing in my answer preventing you from doing so

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: Windows Forms Application C++ .net 2003

wael_r1-Jun-09 19:52

wael_r

1-Jun-09 19:52

Thanks again, I tried your solution but may i need another thing.
Ex: struct ggg{
int i;
int j;
}test;

in the first form1 i put "test fff;"
fff.i=1;

in the second form i want to use the value of the same structure fff.
Ex: i want in the form2 to give the value of fff.i to another variable in form2;
any solution? really i spend one day on this. Sigh | :sigh:

Re: Windows Forms Application C++ .net 2003

Stuart Dootson1-Jun-09 20:45

Stuart Dootson

1-Jun-09 20:45

wael_r wrote:
in the first form1 i put "test fff;"

If you put test fff; in the form, then it's a member of the form class. So, you'd need to access it using an instance of the first form.

If you want to share fff across all instances of form1 and form2, then you could make fff a static (or class-wide) member[^] of form1 - like this:

class Form1
{
  // Other stuff
  public: static test fff;
};

In Form1, you need to have a definition for fff (hte above is just the declaration like this:

test Form1::fff = { 1, 2 };

In form2, you can access it like this (I'm doing it in the constructor):

Form2::Form2()
{
  this->other_variable = Form1::fff.i;
}

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Change Toolbar background color

Pryabu1-Jun-09 1:14

Pryabu

1-Jun-09 1:14

Hi,

How can I change the background color of the tool bar to blue?

RegQueryValueEx giving wrong value in xp but right in vista

VCProgrammer1-Jun-09 0:57

VCProgrammer

1-Jun-09 0:57

Hi all,

I am using RegQueryValueEx() function

 RegQueryValueEx(hKey, "str",NULL,NULL,(LPBYTE)data,&dwLength);
CString val = data;

my problem is in vista data is returning correct value, but in xp it gives some garbage value, but when i check dwLength variable its value is right.

Can anybody please help me in this..

THanks in advance

Re: RegQueryValueEx giving wrong value in xp but right in vista

«_Superman_»1-Jun-09 1:13

«_Superman_»

1-Jun-09 1:13

In XP, did you check your garbage, I mean value in the registry.

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

Re: RegQueryValueEx giving wrong value in xp but right in vista

CPallini1-Jun-09 1:34

CPallini

1-Jun-09 1:34

VCProgrammer wrote:
my problem is in vista data is returning correct value, but in xp it gives some garbage value, but when i check dwLength variable its value is right.

What is the dwLenght value before and after the call? What is the expected data value (and the 'garbage' one?)?
Why didn't you check RegQueryValueEx return value?
Smile | :)

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-- Alfonso the Wise, 13th Century King of Castile.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

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String obtained from getwindowtext();

johnjitu1-Jun-09 0:56

johnjitu

1-Jun-09 0:56

Hello

Everybody

I have small problem ,how can i convert the string obtained from getwindowtext() to single char?.
I need to assign this text to char.

Thanks in advance

Re: String obtained from getwindowtext();

CPallini1-Jun-09 1:00

CPallini

1-Jun-09 1:00

johnjitu wrote:
I have small problem ,how can i convert the string obtained from getwindowtext() to single char?.

???

Re: String obtained from getwindowtext();

johnjitu1-Jun-09 2:35

johnjitu

1-Jun-09 2:35

Thanks for response ,
My question was that .,, I'm getting a string from user input text box with the funtion Getwindowtext("string"),(in which user puts any digit) and then I have variabel char firstName[size] in my coding.Now I'm trying to convert String to Char array.

Plz help me

Re: String obtained from getwindowtext();

«_Superman_»1-Jun-09 1:11

«_Superman_»

1-Jun-09 1:11

A string means many chars.
So what do you want to do here?

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

Re: String obtained from getwindowtext();

johnjitu1-Jun-09 2:18

johnjitu

1-Jun-09 2:18

Re: String obtained from getwindowtext();

CPallini1-Jun-09 2:35

CPallini

1-Jun-09 2:35

You usually directly fill the array content with GetWindowText, for instance:

#define SIZE    0x100
TCHAR myArray[SIZE];
if ( ! GetWindowText(hWnd, myArray, SIZE) )
{
  // handle error
}
//..

Re: String obtained from getwindowtext();

johnjitu1-Jun-09 3:27

johnjitu

1-Jun-09 3:27

But its give me a below error if i have include the header file

#include Winuser.h

C:\UTI_sendCmd\SendCMDDlg.cpp(1420) : error C2065: 'hWnd' : undeclared identifier

Re: String obtained from getwindowtext();

David Crow1-Jun-09 3:13

David Crow

1-Jun-09 3:13

Seems kind of silly but here goes:

char szString[100];
GetWindowText(hWnd, szString, sizeof(szString));
char c = szString[0];

"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: String obtained from getwindowtext();

johnjitu1-Jun-09 3:33

johnjitu

1-Jun-09 3:33

Thanks sir
i have done this but it will give error

m_slot.GetWindowText(hWnd, szString, sizeof(szString));

cpp(1422) : error C2065: 'hWnd' : undeclared identifier

even i have declared winuser.h

please help me to fix this problem

Re: String obtained from getwindowtext();

David Crow1-Jun-09 3:43

David Crow

1-Jun-09 3:43

johnjitu wrote:
m_slot.GetWindowText(hWnd, szString, sizeof(szString));

cpp(1422) : error C2065: 'hWnd' : undeclared identifier

That was just an example. It's up to you to provide whatever name you've given the window handle. Roll eyes | :rolleyes:

C2065 is one of the easiest compiler errors to fix.

Since you are using MFC, try:

m_slot.GetWindowText(szString, sizeof(szString));

::GetWindowText(m_slot.GetSafeHwnd(), szString, sizeof(szString));

Re: String obtained from getwindowtext();

johnjitu1-Jun-09 3:48

johnjitu

1-Jun-09 3:48

YA GREAT , I WAS DOING MISTAKe TO ADD THIS VARIABEL (hWnd).Thanks you very much ,i got to fix the problem.

Behaviour of CreateThread compared to AfxBeginThread

sunny_vc1-Jun-09 0:10

sunny_vc

1-Jun-09 0:10

Hi all,
Im working in vc6.0 using MFC.
When I create thread using AfxBeginThread(), if the thread is running then the CPU utilization shown is around 50%,
even though the thread is doing nothing.
It is called as:
AfxBeginThread(PortReadThread,gpSerialPortCtrl,THREAD_PRIORITY_NORMAL);

If I create the same thread using CreateThread(),even the thread is running the CPU utilization is around 0%

It is called as:
CreateThread( NULL,0,(LPTHREAD_START_ROUTINE) PortReadThread,(LPVOID) this,0,NULL);

Is this the expected behaviour.If not please tell me why its behaving like that.

Thanks in advance.

Regards,
Sunil Kumar

Re: Behaviour of CreateThread compared to AfxBeginThread

Naveen1-Jun-09 0:41

Naveen

1-Jun-09 0:41

Actually the AfxBeginThread() also calls the CreateThread() function internally to create a thread. so basically there should not be any difference in CPU utitlization. Some additional tasks AfxBeginThread() perform is the initialization of MFC and CRT global variables and thread specific variables. Also try the _beginthread().

sunilkumar.d wrote:
even though the thread is doing nothing.

Nothing means? is it in some wait state?

nave

[OpenedFileFinder] [My Blog]

Re: Behaviour of CreateThread compared to AfxBeginThread

sunny_vc1-Jun-09 0:44

sunny_vc

1-Jun-09 0:44

Not in wait state exactly.just to test the application i have put a while loop
with empty braces in the thread.

Regards,
Sunil Kumar

Re: Behaviour of CreateThread compared to AfxBeginThread

Saurabh.Garg1-Jun-09 0:54

Saurabh.Garg

1-Jun-09 0:54

Well thread is not doing nothing. The thread is busy executing infinite loop!!!

-Saurabh

Re: Behaviour of CreateThread compared to AfxBeginThread

Naveen1-Jun-09 1:09

Naveen

1-Jun-09 1:09

sunilkumar.d wrote:
Not in wait state exactly.just to test the application i have put a while loop

.

Then the thread will definitly use cpu and the AfBeginThread() is working properly. I guess there is something wrong in calling Createthread() not in AfBeginThread(). Cool | :cool:

nave

[OpenedFileFinder] [My Blog]

Re: Behaviour of CreateThread compared to AfxBeginThread

Rajesh R Subramanian2-Nov-10 7:04

Rajesh R Subramanian

2-Nov-10 7:04

Naveen wrote:
Actually the AfxBeginThread() also calls the CreateThread() function internally to create a thread.

Nope, that's wrong. AfxBeginThread calls _beginthreadex internally.

There are some really weird people on this planet - MIM.

who recommand book about ood?

Archy_Yu31-May-09 23:21

Archy_Yu

31-May-09 23:21

I am trying to further my knowledge of Object Oriented Programming, and I have acknowledged that my main weakness in this area is the figuring out what objects I need, and how they should be designed.About the projects,what i have done,are all
three-layer.I am tired of it.
I want to fill this gap in my knowledge so I am looking for any suggestions from people who're familiar with OOD and have any recommendations.recommending book is very welcome!
Thanks in advance.

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