C / C++ / MFC

jhwurmbach29-Oct-07 2:36

jhwurmbach

29-Oct-07 2:36

There is no way other than loading the pngs and then convert them to a (device-dependent) CBitmap, I fear.

Let's think the unthinkable, let's do the undoable, let's prepare to grapple with the ineffable itself, and see if we may not eff it after all.
Douglas Adams, "Dirk Gently's Holistic Detective Agency"

Hamid_RT29-Oct-07 2:39

29-Oct-07 2:39

Do you want to make a toolbar with image?

_Tiranox_29-Oct-07 2:46

_Tiranox_

29-Oct-07 2:46

I want make toolbar with png image (with alpha transparency) on button's.

Hamid_RT29-Oct-07 4:09

29-Oct-07 4:09

You can read png files and then convert to CBitmap for use on the toolbars.

jhwurmbach29-Oct-07 4:55

jhwurmbach

29-Oct-07 4:55

_Tiranox_ wrote:
toolbar with png image (with alpha transparency)

Thats probably not possible. At least not out of the box.
Here[^] are some buttons allowing transparency.
And here[^] is an example of a toolbar with background-bitmap.

Not able to add Item in Combo Box [modified]

_Tiranox_2-Nov-07 1:26

_Tiranox_

2-Nov-07 1:26

Ok. Thanks for help.

GauranG Shah29-Oct-07 0:07

29-Oct-07 0:07

Hello Friends,

I am using WIN32 Dialog based Application. And in that I am using combo box. But not able to add the string in the combo box.

the Code I use to set the text in dialog box in as follows

case WM_INITDIALOG:
TCHAR *ValueName = new TCHAR[20];
wcscpy(ValueName,L"Gaurang ");
hCombo = GetDlgItem(hWndDlg,IDC_COMBO1);
SendDlgItemMessage(hWndDlg,IDC_COMBO1,(UINT)CB_ADDSTRING,(WPARAM)0,(LPARAM)L"Gaurang");
dError = GetLastError(); //dError  = 1460
LRESULT lr = SendMessage(hCombo,(UINT)CB_ADDSTRING,(WPARAM)0,(LPARAM)L"ValueName");
dError = GetLastError();  //dError = 1460
break;

When I use the above line of code to set the Text in combo box it gives me the 1460 error code which says "This operation returned because the timeout period expired"

-- modified at 6:55 Monday 29th October, 2007

Nishad S29-Oct-07 0:42

29-Oct-07 0:42

Are you sure that combobox is created with the same ID?

Also can you do this from anyother event than WM_INITDIALOG? I mean any WM_LBUTTONDOWN?

- NS -

GauranG Shah29-Oct-07 1:31

29-Oct-07 1:31

Hi,

When I use the above code in some Button even then I am getting Error code as 5.

I.e.

case WM_COMMAND:
if (LOWORD(wParam) == IDOK)
{
SendMessage(GetDlgItem(hWndDlg,IDC_COMBO1),(UINT)CB_ADDSTRING,(WPARAM)0,(LPARAM)L"ValueName");
dError = GetLastError(); //dError = 5; which mean Access denied
}

Nishad S29-Oct-07 1:49

29-Oct-07 1:49

I have tried it.
It is working fine... Frown | :(

What is the return value of the SendMessage?

- NS -

GauranG Shah29-Oct-07 2:05

29-Oct-07 2:05

I am using this code in Modeless Dialog Box. Can it be the source of problem ? This is what I am getting.

lr=  SendMessage(hCombo,(UINT)CB_ADDSTRING,(WPARAM)0,(LPARAM)ValueName); //lr ==0
  dError = GetLastError();  // dError == 1460
 lr=  SendMessage(hCombo,(UINT)CB_ADDSTRING,(WPARAM)0,(LPARAM)ValueName); // l2 == 0
dError = GetLastError();  // dError == 1460
 lr=  SendMessage(hCombo,(UINT)CB_ADDSTRING,(WPARAM)0,(LPARAM)ValueName); //lr == 0
dError = GetLastError();  // dError == 1460
lr=  SendMessage(hCombo,(UINT)CB_GETCOUNT,(WPARAM)0,(LPARAM)0); //lr == 3
dError = GetLastError();  // dError == 1460

Nishad S29-Oct-07 2:10

29-Oct-07 2:10

I got the problem... Smile | :)

CB_ADDSTRING has no effect on last error.

Try like this and you will get the answer...

SetLastError( 10 );
SendDlgItemMessage( hDlg, IDC_COMBO1, CB_ADDSTRING, 0, (LPARAM)L"Apple" );

- NS -

GauranG Shah29-Oct-07 2:24

29-Oct-07 2:24

Thnx Again. But its NOT working. I tried you code in WM_INITDIALOG and in Button even also. But its not showing anything in the combo box.

Re: Not able to add Item in Combo Box[solved]

GauranG Shah29-Oct-07 2:29

29-Oct-07 2:29

sorry for my post. It was happpening due to the silly mistake. the hight of the comobox was too small to show the charcters in it. I just take the new combo box with greater hight and problem solved.

Thnx a lot for your help

Re: Not able to add Item in Combo Box[solved]

Nishad S29-Oct-07 2:31

Re: Not able to add Item in Combo Box[solved]

29-Oct-07 2:31

OK... kindly ignore my next solution... ha ha... Wink | ;)

- NS -

Hamid_RT29-Oct-07 2:41

29-Oct-07 2:41

Wow so your problem wasnt combobbox and your answer was MoveWindow Big Grin | :-D

Nishad S29-Oct-07 2:29

29-Oct-07 2:29

But the return value is the indication of success and again the count is correct as per your previous post... What kind of combobox is that? Can you check your code by doing as follows?

1. Add some items to combobox and through the resource editor
2. Comment out the dynamic item adding (CB_ADDSTRING) codes
3. Run the application and test it

- NS -

Roger Broomfield29-Oct-07 2:16

Roger Broomfield

29-Oct-07 2:16

CB_ADDSTRING returns the index of the item added, or CB_ERR ( = -1) if an error occurs, CB_ERRSPACE if insufficient space available. You add 3 items of the same value, each time the return value is 0, this is totally consistent with a combobox that has the CBS_SORT style. Furthermore the CB_GETCOUNT return value is 3 indicating that 3 items were infact added. Also there is no indication in the documentation of CB_ADDSTRING that it calls SetLastError() when an error occurs.

saravana00129-Oct-07 0:43

saravana001

29-Oct-07 0:43

U can add a string to a combo box using

CString string1;
m_combobox.AddString(String1);

here m_combobox is the member variable of the combo box.

Regards..
Saravana..

Provided...

CPallini29-Oct-07 0:52

CPallini

29-Oct-07 0:52

Provided you're usign MFC, my dear (the OP uses Win32 API)...
Big Grin | :-D

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.

GauranG Shah29-Oct-07 1:05

29-Oct-07 1:05

Thnx but I am using WIN32 based Dialog Box.

Hamid_RT29-Oct-07 2:38