C / C++ / MFC

4-Sep-06 20:38

Hi, I am new to VC++. I have a list box in my window, i have checked the properties 'Horizontal scroll' 'Vertical scroll' and also 'Disble no scroll', to true.
But when I run the application, the scroll bars are disabled. Please let me know where I went wrong.

regards
haasini

Programm3r4-Sep-06 20:47

4-Sep-06 20:47

Hi,

But if you set the 'Horizontal scroll' 'Vertical scroll' to 'Disble no scroll', the scroll bars will be disabled. Cause your telling the compiler that you won't be using then by: 'Disble no scroll'.

Well, that is if I understand your question correctly.

Hope it helps.

Only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r

Programm3r4-Sep-06 20:59

4-Sep-06 20:59

Right ... After futher investigation ... How many items are in your list box, cause if there were only one | two, the scroll bars will be disabled, depending on the vertical size of the list box.

Only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r

haasini4-Sep-06 21:07

4-Sep-06 21:07

Thanq for the response..
I have many items in the list box, but only Vertical scroll is enabled..
horizontal scroll is not enabled though the text is exceeding the width of listbox..

regards
haasini

Programm3r4-Sep-06 21:13

4-Sep-06 21:13

Ok, so if I understand it correctly ... both of the scroll bars (Vertical & Horizontal) (in their properties) are enabled? And you have text that is exceeding the vertical and horizontal width | height of the object?
Just for interrest what complirer are you using?

Only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r

velayudhan_raj4-Sep-06 20:48

velayudhan_raj

4-Sep-06 20:48

Actually, the scroll bars will be enabled only if there are more items to be displayed in the list box.

Please check after inserting more items in the List box.

Regards
Velayudhan

haasini4-Sep-06 21:01

4-Sep-06 21:01

Thanq for the response..
I have many items in the list box, but only Vertical scroll is enabled..
horizontal scroll is not enabled though the text is exceeding the width of listbox..

regards
haasini

Hamid_RT4-Sep-06 20:50

Hamid_RT

4-Sep-06 20:50

How many items in your listbox?

WhiteSky

haasini4-Sep-06 21:05

4-Sep-06 21:05

Thanq for the response..
I have many items in the list box, but only Vertical scroll is enabled..
horizontal scroll is not enabled though the text is exceeding the width of listbox..

regards
haasini

Hamid_RT5-Sep-06 20:37

Hamid_RT

5-Sep-06 20:37

I suggest use from CListCtrl its better than CListBox

WhiteSky

Viorel.4-Sep-06 21:45

Viorel.

4-Sep-06 21:45

It seems the horizontal bar cannot be used as you expected. It is supported by the list box only in case of multicolumn lists, and does not perform horizontal scrolling for long items.

I think you can try an alternative solution based on "list control" instead of "list box" (available in Dialog Editor too). When a list control is used in Report mode, it looks like a list box with or without header, but with new features, like horizontal scrolling.

I hope this helps.

haasini5-Sep-06 18:24

5-Sep-06 18:24

Hi..

Thanks a lot for the reply..
I ll try with listcontrol and
get back to u if i have any problem..

regards
haasini Smile | :)

try ... catch problem

Programm3r4-Sep-06 20:21

4-Sep-06 20:21

Hi all,

I have this try catch block,

try{
 rc=SQLConnect(hdbc,chr_ds_name,SQL_NTS,chr_ds_username,SQL_NTS,chr_ds_password,SQL_NTS);
}
catch(...)
{
...
}

But the thing is the catch block doesn't seem to work, my whole application fails and closes down. Confused | :confused:

Can anyone help??

Thanx alot

Only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r

prasad_som4-Sep-06 20:32

prasad_som

4-Sep-06 20:32

catch will execute, only if SQLConnect throws some exception or, code after call to it catch block throws exception.

Programm3r wrote:
my whole application fails and closes down

That may be necessariy because of passing some invalid parameters to SQLConnect.

Prasad
Notifier using ATL

Programm3r4-Sep-06 20:37

4-Sep-06 20:37

First of thanx for the reply..

"...That may be necessariy because of passing some invalid parameters to SQLConnect..."

O.k, but if what you you are saying is true, then the catch block will catch it .. right?

Only programmers that are better than C programmers are those who code in 1's and 0's..... Smile | :)

Programm3r

prasad_som4-Sep-06 20:48

prasad_som

4-Sep-06 20:48

Programm3r wrote:
O.k, but if what you you are saying is true, then the catch block will catch it .. right?

As I said earlier,catch will execute only if exception is thrown from try block.
In above case, its not necessarily checked by SQLConnect for invalid memory.
consider this code for understanding

int foo1(char* p)
{
	try 
	{
           memset(p,0,10);
	}
	catch(...)
	{
	   throw;
	}
    return 0;
}

int main(int argc, char* argv[])
{
try
{
	char *p=NULL;
	foo1(p);
}
catch(...)
{
  cout<<"in Catch"<<endl;
}
}

In you case foo1 like implementation might not implemented by SQLConnect.
If you try removing try, catch from foo1 function, above code will crash irrespective of try, catch in main.

Prasad
Notifier using ATL

Programm3r4-Sep-06 21:02