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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.
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Declare it as static class member in one of the classes.
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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
{
};
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
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Thank you very much for your reply
but i need to user the same structure with the filled values in other form.
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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
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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. 
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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
{
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
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Hi,
How can I change the background color of the tool bar to blue?
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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
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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.
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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?
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- 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
[My articles]
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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
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johnjitu wrote: I have small problem ,how can i convert the string obtained from getwindowtext() to single char?.
 ???
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- 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
[My articles]
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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
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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.
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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
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You usually directly fill the array content with GetWindowText, for instance:
#define SIZE 0x100
TCHAR myArray[SIZE];
if ( ! GetWindowText(hWnd, myArray, SIZE) )
{
}
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler.
-- 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
[My articles]
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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
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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
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
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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
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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.  C2065 is one of the easiest compiler errors to fix.
Since you are using MFC, try:
m_slot.GetWindowText(szString, sizeof(szString)); or
::GetWindowText(m_slot.GetSafeHwnd(), szString, sizeof(szString));
"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown
"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons
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YA GREAT , I WAS DOING MISTAKe TO ADD THIS VARIABEL (hWnd).Thanks you very much ,i got to fix the problem.
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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
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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?
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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
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