C / C++ / MFC

Rajesh R Subramanian5-Apr-07 1:09

Rajesh R Subramanian

5-Apr-07 1:09

PSrividya wrote:
Syntax: WriteProfileString ("file name", "section", "key", "string") where the first parameter is the file name in which the key entry has to be made.

Huh? If you want to specify the file name by yourself, you need to use WritePrivateProfileString. WriteProfileString takes just 3 arguments.

Nobody can give you wiser advice than yourself. - Cicero
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TpB11-May-10 6:52

TpB

11-May-10 6:52

WriteProfileString writes to the registry, not just an ini.

To remove a profile string from the registry you need to get the key such as theApp.GetAppRegistryKey, tunnel to the key you want deleted and then use RegDeleteKeyEx.

Kiran Pinjala5-Apr-07 0:25

Kiran Pinjala

5-Apr-07 0:25

i am using win2000professional does it differ in this behaviour?

KIRAN PINJARLA

Disable pause/break key in console application

Rajesh R Subramanian5-Apr-07 0:34

Rajesh R Subramanian

5-Apr-07 0:34

Nobody can give you wiser advice than yourself. - Cicero
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yccheok4-Apr-07 23:17

yccheok

4-Apr-07 23:17

Hi all,

I would like to disable the 'Pause/Break' key in a console
application. Normally, pressing the 'Pause' key halts the
application's execution. However, this may lead to undesirable
processing gaps in my system. Hence, I would like to disable/ break
key in my console application.

How can I do so?

I tried SetConsoleCtrlHandler. It only able to capture the following events, not "pause" event. Do I need to do it in OS level?

CTRL_C_EVENT
CTRL_BREAK_EVENT
CTRL_CLOSE_EVENT
CTRL_LOGOFF_EVENT
CTRL_SHUTDOWN_EVENT

Thank you.

cheok

How to implement array of strings

yaminisridaran4-Apr-07 22:53

yaminisridaran

4-Apr-07 22:53

I have to implement 5 strings in a function,so I need to know how to implement array of strings

S.Yamini

Re: How to implement array of strings

CPallini4-Apr-07 23:03

CPallini

4-Apr-07 23:03

Whith MFC, you can use

CString sMyStrings[5];

(or use a CArray to dynamically handle the strings).

Using STL, you can declare

std::string sMyStrings[5];

(or use a std::vector< std::string > to dynamically...)

Using plain C++, a string is nothing more than a (zero terminated) chunk of chars, hence

char * sMyStrings[5];
sMyString[0]="foo";
...

may fit your needs.

Smile | :)

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.

Re: How to implement array of strings

yaminisridaran6-Apr-07 18:29

yaminisridaran

6-Apr-07 18:29

Thanks.It works great. I want to learn automation in VC++. Can u suggest any links or books for me.

S.Yamini

Memory leak in ADO CreateParameter

voorugonda prashanth4-Apr-07 21:20

voorugonda prashanth

4-Apr-07 21:20

Hi All,

when i rational purify it is showing a memory leak in ADO CreateParameter method.

is there really any memory leak?

please do the needful help.

Re: Memory leak in ADO CreateParameter

Dmitry Khudorozhkov4-Apr-07 23:15

Dmitry Khudorozhkov

4-Apr-07 23:15

Yes, it is a bug confirmed by MSFT:

http://support.microsoft.com/kb/817518

-------------------------
Don't worry, be happy Blush | :O

)

Still need a bit of help please

planetx224-Apr-07 21:14

planetx22

4-Apr-07 21:14

Ok, so thanks to the help I have the program working somewhat correctly, I think. It has 2 loops, a for and while.. one allows the user to keep inputting data into an array that will be defined by the user in size but is no more than 50 values. I have a while loop in this that will ask user to input 1 to continue, 0 to stop entering temperatures. My problem is, I think the values are being stored correctly cause when i choose to output say myarray[0] the correct value I input comes up, but I want to be able to print out how many actual arrays there are in a statement like "Number of readings entered is 12," not the values in them (although I hope i stored each one properly).

This is where I am stuck. From here I have to take the data and make sure its all in centigrade. Im pretty sure I can write a basic function to do this part, but how do I make a statement to call this in my loop as the user inputs functions, and then prints out how many there are? Any help much appreciated thanks.

// Computer Lab test.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"
#include <iostream>
using namespace std;

int _tmain(int argc, _TCHAR* argv[])
{

double myarray[51];
int i;
int flag;
flag=1;
for(i= 0; i < 50; i++)
while (flag==1)
{
// loop to enter temperatures - pressing 1 continues, pressing 0 stops //
cout << "Enter Temperature Reading:";
cin >>myarray[i];
cout << "Enter 1 to input more values, 0 to stop";
cin >>flag;
}
std::cout << myarray[i] << std::endl;

return 0;
}

Nibu babu thomas4-Apr-07 21:27

4-Apr-07 21:27

planetx22 wrote:
for(i= 0; i < 50; i++)
while (flag==1)
{
// loop to enter temperatures - pressing 1 continues, pressing 0 stops //
cout << "Enter Temperature Reading:";
cin >>myarray[i];
cout << "Enter 1 to input more values, 0 to stop";
cin >>flag;
}

Modify the above code to the following...

for(i = 0; i < 51 && flag == 1; i++)
{
   // Loop to enter temperatures - pressing 1 continues, pressing 0 stops //
   cout << "Enter Temperature Reading:"; 
   cin >>myarray[i]; 
   cout << "Enter 1 to input more values, 0 to stop";
   cin >>flag;
}// End for

cout << "Number of elements in the array is: " << i;

Nibu thomas
A Developer

Programming tips[^] My site[^]

planetx224-Apr-07 21:31

planetx22

4-Apr-07 21:31

Ahh.. of course I don't know why I didnt see that before thank you very much. The next thing I need to do is use a function i previously made to convert the values entered in array from fahrenheit (if they are) to celsius. Im just not sure how to make the computer know if the values entered are fahrenheit or not (i know the math formula, just not how to use it). Any help much appreciated thanks.

Nibu babu thomas4-Apr-07 21:35

4-Apr-07 21:35

planetx22 wrote:
The next thing I need to do is use a function i previously made to convert the values entered in array from fahrenheit (if they are) to celsius.

See here[^]

Nibu thomas
A Developer

Programming tips[^] My site[^]

planetx224-Apr-07 21:55

planetx22

4-Apr-07 21:55

thanks alot.. got me on the right track i think.

My function goes like -

double my func(double fahrenheit)
{
if (fahrenheit>100) fahrenheit = 1.8 * celsius + 32;
return fahrenheit;
};

Im just not sure how to make the value the user enters into myarray[0-50] go into fahrenheit and then do the check, then return the value to the array either fixed with the formula or not because it was not greater than 100.
Can I do something like in my for loop before the user chooses to continue or stop, or is that the wrong spot? And would it be something like -

myarray[i]=my func(myarray[i]; ?
Thanks alot for the help.

Why does WM_PAINT exclude DrawItem?

David Crow5-Apr-07 3:09

David Crow

5-Apr-07 3:09

planetx22 wrote:
Im just not sure how to make the computer know if the values entered are fahrenheit or not...

It can't. If you simply see 35^o, how would you know whether its F or C? You might want to ask the user what they will be entering before the for loop.

"Approved Workmen Are Not Ashamed" - 2 Timothy 2:15

"Judge not by the eye but by the heart." - Native American Proverb

zouchao11124-Apr-07 20:51

zouchao1112

4-Apr-07 20:51

hi, all
Message WM_PAINT is resposed and DrawItem is also overloaded in CMyListCtrl.
and the style of LVS_OWNERDRAWFIXED is added into CMyListCtrl.
I draw figure A in OnPaint() and figure B in DrawItem(), the result is figure A is presented. If I delete the WM_PAINT message handler, B is presented. could anyone here explain this for me if I want to draw A and B both in OnPaint() and DrawItem respectively?

Re: Why does WM_PAINT exclude DrawItem?

Nibu babu thomas4-Apr-07 21:37

ListCtrl header height in report view

4-Apr-07 21:37

zouchao1112 wrote:
I draw figure A in OnPaint() and figure B in DrawItem(),

Why?

zouchao1112 wrote:
If I delete the WM_PAINT message handler, B is presented.

Naturally, someone has to send the draw item message, since you have overridden WM_PAINT you are the one who should do it.

Nibu thomas
A Developer

Programming tips[^] My site[^]

Nishad S4-Apr-07 20:20

Nishad S

4-Apr-07 20:20

Hi all,

How can I change the height of the header in list control having report view?

Thank you.

- NS -

Nibu babu thomas4-Apr-07 20:31

4-Apr-07 20:31

NS17 wrote:
How can I change the height of the header in list control having report view?

Doesn't sub classing of header control help?

Nibu thomas
A Developer

Programming tips[^] My site[^]

Nishad S4-Apr-07 20:36

Nishad S

4-Apr-07 20:36

But my problem is if I reduce the height the list control items will not be shifted to up. So there will be blank space between header control and first list item. Frown | :(

- NS -

Nibu babu thomas4-Apr-07 20:54

4-Apr-07 20:54

NS17 wrote:
But my problem is if I reduce the height the list control items will not be shifted to up. So there will be blank space between header control and first list item.

This[^] thread has some suggestions you can try them.

Nibu thomas
A Developer

Programming tips[^] My site[^]