C / C++ / MFC

Windows Forms Application C++ .net 2003

1-Jun-09 2:48

The answer's contained in here[^], which is easily accessible through the programmer's best friend[^].

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

wael_r1-Jun-09 1:47

wael_r

1-Jun-09 1:47

Pleaseeeeeeeeee can any one help me to declare public struct or variable to use in all the forms in
"Windows Forms Application C++"
ex: i want to declare a connection and use it in all the forms.
i want to declare a structure and use it in all the forms.

56789012341-Jun-09 2:48

5678901234

1-Jun-09 2:48

Declare it as static class member in one of the classes.

Stuart Dootson1-Jun-09 2:51

1-Jun-09 2:51

In a .h file (let's call it my_global_struct.h):

#if !defined(__my_global_struct_h__)
#define __my_global_struct_h__

struct my_global_struct
{
   // put whatever you want in the struct here
};

extern my_global_struct;

#endif // !defined(__my_global_struct_h__)

In a .cpp file (let's call it my_global_struct.cpp):

#include my_global_struct.h
my_global_struct;

#include my_global_struct.h into any files that need to see the global struct variable.

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

wael_r1-Jun-09 3:28

wael_r

1-Jun-09 3:28

Thank you very much for your reply
but i need to user the same structure with the filled values in other form.

Stuart Dootson1-Jun-09 3:30

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

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:

Stuart Dootson1-Jun-09 20:45

Change Toolbar background color

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

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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String obtained from getwindowtext();

johnjitu1-Jun-09 0:56

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

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?.

???

johnjitu1-Jun-09 2:35

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

«_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.

johnjitu1-Jun-09 2:18

1-Jun-09 2:18

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
}
//..

johnjitu1-Jun-09 3:27

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

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];

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johnjitu1-Jun-09 3:33

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

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));

johnjitu1-Jun-09 3:48