C / C++ / MFC Discussion Boards

Re: Function with default argument

vikramlinux1-Mar-06 23:13

vikramlinux

1-Mar-06 23:13

well my limitation is I can not modify the date_t structure code.

Re: Function with default argument

toxcct1-Mar-06 23:16

toxcct

1-Mar-06 23:16

so why not creating two overloads of the function ? one with no parameters, the other getting a date_t ?

moreover, even without changing the date_t structure, using function(date_t t = date_t()) { } should work if the structure don't define any constructor (the compiler defines one by default).

Re: Function with default argument

Lim Bio Liong2-Mar-06 0:15

Lim Bio Liong

2-Mar-06 0:15

Hello v2.0,

Is the fact that the default constructor sets all struct field values to 0 a C++ Standard or is it compiler-dependent ?

Thanks, v2.0,
Bio.

Re: Function with default argument

toxcct2-Mar-06 0:19

toxcct

2-Mar-06 0:19

in C++, structures are actually classes.
when a compiler (whatever the plateform) sees no constructor defined in a class, it creates implicitely an empty one for that class...

there, i cannot be sure that the fields will be filled with 0, but i think so.
to be verified.

Re: Function with default argument

Stephen Hewitt1-Mar-06 23:18

Stephen Hewitt

1-Mar-06 23:18

You could derive from it:

struct my_date_type : date_t
{
     my_date_type()
     {
         // Set default date here...
     }
     my_date_type(short y, byte m, byte d): year(y), month(m), day(d)
     {}
};

Now you can use it as follows:

my_date_type d1 = my_date_type(2006, 1, 1);
my_date_type d2 = my_date_type(); // Default;
void function(my_date_type t = my_date_type())
{
}

Steve

Re: Function with default argument

Nibu babu thomas1-Mar-06 23:23

Nibu babu thomas

1-Mar-06 23:23

You can do like this...

date_t t = {12,12,12};
<font color=blue>void</font> function(date_t arg = t);

....

<font color=blue>void</font> function(date_t arg)
{
   ....
}

Nibu thomas
Software Developer

Re: Function with default argument

Stephen Hewitt2-Mar-06 1:49

Stephen Hewitt

2-Mar-06 1:49

I think this is probably the best technique so far.

Steve

how to show GIF image on a picture box

baldha rakesh1-Mar-06 22:55

baldha rakesh

1-Mar-06 22:55

i have to gif image on picture box if anybody know please give me answer ASAP

Bankey Khandelwal
Software Engineer

Re: how to show GIF image on a picture box

toxcct1-Mar-06 23:01

toxcct

1-Mar-06 23:01

CxImage[^]

how to load bitmap on picture ctrl

baldha rakesh1-Mar-06 22:03

baldha rakesh

1-Mar-06 22:03

i am trying like this but this give reference error please reply ASAP
CBitmap *bitmap1=(CBitmap *)GetDlgItem(IDC_STATIC1);
bitmap1->LoadBitmap(IDB_BITMAP1);

Bankey Khandelwal
Software Engineer

Re: how to load bitmap on picture ctrl

Nibu babu thomas1-Mar-06 22:13

Nibu babu thomas

1-Mar-06 22:13

Bankey Khandelwal wrote:
CBitmap *bitmap1=(CBitmap *)GetDlgItem(IDC_STATIC1);
bitmap1->LoadBitmap(IDB_BITMAP1);

GetDlgItem(...) returns a CWnd*. You are trying to cast it to a bitmap. This is wrong.

You should do it like this...

CBitmap bmp;
bmp.LoadBitmap(IDB_BITMAP1);
CStatic *pStatic = (CStatic*)GetDlgItem(IDC_STATIC1);
pStatic->SetBitmap(bmp);

Nibu thomas
Software Developer

Re: how to load bitmap on picture ctrl

baldha rakesh1-Mar-06 23:02

baldha rakesh

1-Mar-06 23:02

thanks you,
it is loading but not show on button where is i wrong please reply

Bankey Khandelwal
Software Engineer

Re: how to load bitmap on picture ctrl

Nibu babu thomas1-Mar-06 23:05

Nibu babu thomas

1-Mar-06 23:05

Bankey Khandelwal wrote:
not show on button

Is it a button! or Is it a Static!

Nibu thomas
Software Developer

Re: how to load bitmap on picture ctrl

baldha rakesh1-Mar-06 23:42

baldha rakesh

1-Mar-06 23:42

it is static

Bankey Khandelwal
Software Engineer

Re: how to load bitmap on picture ctrl

Nibu babu thomas1-Mar-06 23:45

Nibu babu thomas

1-Mar-06 23:45

Your static control must have the style SS_BITMAP(for bitmap) or SS_ICON(for icon).

Nibu thomas
Software Developer

Re: how to load bitmap on picture ctrl

baldha rakesh2-Mar-06 0:02

baldha rakesh

2-Mar-06 0:02

ya there is type bitmap but there is no style property like bitmap etc.

Bankey Khandelwal
Software Engineer

Re: how to load bitmap on picture ctrl

Nibu babu thomas2-Mar-06 0:04

Nibu babu thomas

2-Mar-06 0:04

Bankey Khandelwal wrote:
ya there is type bitmap

Yes that is the one.

Nibu thomas
Software Developer

Re: how to load bitmap on picture ctrl

sunithakiranmaye2-Mar-06 18:54

sunithakiranmaye

2-Mar-06 18:54

You said it is loading but not show on button,the reason is u have to check the button properites as ownerdraw.
It works now

Kiranmaye

Re: how to load bitmap on picture ctrl

janisha1-Mar-06 22:20

janisha

1-Mar-06 22:20

U can directly load on picture control by changing the control properties
Right click on picture control and change type to bitmap and select bitmap id in Image.
Cool | :cool:

Re: how to load bitmap on picture ctrl

_AnsHUMAN_ 1-Mar-06 23:19

_AnsHUMAN_

1-Mar-06 23:19

Set the type of button as bitmap and perform the following :
(here m_bit is an object of CBitmap , m_btnStart is the variable for CBitmapButton)
m_bit1.LoadBitmap(IDB_BMPSTART);
HBITMAP hBit1 = (HBITMAP) m_bit1.GetSafeHandle();
m_btnStart.SetBitmap(hBit1);
// Use m_btnStart.SizeToContent() if you want to set the size of the button to that of the image being displayed on it
(open the resource editor and copy the .gif image to the bitmap image in the resource editor)
*******and yes on the picture control you have to set the type as bitmap and pass the image name of the bitmap in the IMAGE option of resource editor

Vision is Always important and so is your ATTITUDE.

Wishes.

Anshuman Dandekar

-- modified at 5:31 Thursday 2nd March, 2006

Launching 3rd party application from MFC Button

amanoullah1-Mar-06 22:02

amanoullah

1-Mar-06 22:02

Hello everyone. I would like to know how to launch an application (.exe) when clicking a button on an MFC dialog. Thanks in advance Smile | :)

Aman

Re: Launching 3rd party application from MFC Button

Cedric Moonen1-Mar-06 22:11

Cedric Moonen

1-Mar-06 22:11

Take a look at CreateProcess[^]

Re: Launching 3rd party application from MFC Button

_AnsHUMAN_ 1-Mar-06 22:14

_AnsHUMAN_

1-Mar-06 22:14

Use ShellExecute()

Vision is Always important and so is your ATTITUDE.

Wishes.

Anshuman Dandekar

Re: Launching 3rd party application from MFC Button

Cool Ju1-Mar-06 22:22

Cool Ju

1-Mar-06 22:22

Hi,

use ShellExecute()

Bye,
Cool Ju Cool | :cool:

Dream Ur Destiny

Calling Crystal Reports 11 from VC++

xdeveloper_del1-Mar-06 21:42

xdeveloper_del

1-Mar-06 21:42

hello members
please help me how to use the runreportwizard method in VC++ 6.0 using crystal reports 11. i have developed a simple mfc which can design, preview, open and save reports. but now i want to add the reportwizard. please help me out.

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.