C / C++ / MFC

How to load bitmap in vb using vc++ dll

4-Jun-07 15:37

Thank you very much.
You are so kind. Big Grin | :-D

jannathali3-Jun-07 23:02

jannathali

3-Jun-07 23:02

hai,
i am new to dll. any one please explain how to load bitmap in vb using vc++ dll

Re: How to load bitmap in vb using vc++ dll

CPallini3-Jun-07 23:37

CPallini

3-Jun-07 23:37

To load a bitmap from a file you can use LoadImage function (http://msdn2.microsoft.com/en-us/library/ms648045.aspx[^])

for instance:

HANDLE hBitmap = LoadImage(NULL, filepath, IMAGE_BITMAP, 0, 0, LR_LOADFROMFILE);

where filepath is a string containing the path of your bitmap file.

Note, you have to call DeleteObject(hBitmap) to perform cleanup when you've finished with the image.

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.

Dialog Bar

vivekphlp3-Jun-07 22:51

3-Jun-07 22:51

how can i create a dialog bar in my application..
I inserted the resource Insert->dialog-dialogbar..
When i try to create a class for my dialogbar, using class wizard.. the Base class CDialogBar is not displayed . . .
what can i do . .

Proud To Be an Indian

Peter, Chan3-Jun-07 23:21

3-Jun-07 23:21

Do you mean toolbar?
If it's toolbar, you can do accroding to the following step.
1)create a toolbar resource "Insert->toolbar"
2)add a member
CToolBar m_wndToolBar;
3)add the following code in your OnInitDialog()
if (!m_wndToolBar.CreateEx(this, TBSTYLE_FLAT, WS_CHILD | WS_VISIBLE | CBRS_TOP
| CBRS_GRIPPER | CBRS_TOOLTIPS | CBRS_FLYBY | CBRS_SIZE_DYNAMIC) ||
!m_wndToolBar.LoadToolBar(IDR_TOOLBAR1))
{
TRACE0("Failed to create toolbar\n");
return -1; // fail to create
}
m_wndToolBar.ShowWindow(SW_SHOW);
RepositionBars(AFX_IDW_CONTROLBAR_FIRST, AFX_IDW_CONTROLBAR_LAST, 0);

I hope it will works.;P

vivekphlp3-Jun-07 23:56

3-Jun-07 23:56

hey no its a DIALOG BAR . ..

Proud To Be an Indian

Rajkumar R3-Jun-07 23:46

3-Jun-07 23:46

Hi,
I usually derive it from CDialog and rename the CDialog to CDialogBar
and
if you need you can simplify the create() function with

 BOOL CYourDlgBar::Create(CWnd* pParentWnd, UINT nStyle)<br />
{<br />
    return CDialogBar::Create(pParentWnd, IDD, nStyle, IDD);<br />
}<br />

And on your frame window create, dock your dialog bar

 m_yourDlgBarObj.Create(this, //frame instance<br />
		WS_CLIPCHILDREN | WS_CLIPSIBLINGS | WS_CHILD |WS_VISIBLE | //style<br />
		CBRS_BOTTOM|CBRS_TOOLTIPS);<br />
<br />
m_yourDlgBarObj.EnableDocking(CBRS_ALIGN_BOTTOM | CBRS_ALIGN_TOP);<br />
DockControlBar(&m_yourDlgBarObj);<br />

vivekphlp3-Jun-07 23:58

3-Jun-07 23:58

OK its working now ... i followed what u said . . .
I had a button in the dialog bar . . but its disabled why . . .

Proud To Be an Indian

Rajkumar R4-Jun-07 0:04

Re: Dialog Bar [modified]

4-Jun-07 0:04

It is the property of MFC,
MFC disables controls if the handlers is not available
override OnUpdateCmdUI() this will enable all.
But MFC wants handlers for each control

Best Regards
Raj

vivekphlp4-Jun-07 0:11

4-Jun-07 0:11

Sorry Raj ... can u plz be more specific...
How to add OnUpdateCmdUI()

There was a button & text box. The text box is enabled...
I added some functionality to the buttn just to display hello,..

Proud To Be an Indian

Rajkumar R4-Jun-07 0:50

4-Jun-07 0:50

Now you have your CYourDlgBarClass,
using class wizard add the override OnUpdateCmdUI(), that's all, this will add

virtual void OnUpdateCmdUI(<br />
       IN CFrameWnd* pTarget, <br />
       IN BOOL bDisableIfNoHandler<br />
       );

in your declaration
and

<br />
void <br />
CYourDlgBarClass::OnUpdateCmdUI(<br />
	IN CFrameWnd* /*pTarget*/, <br />
	IN BOOL /*bDisableIfNoHandler*/<br />
	)<br />
{<br />
	// TODO: Add your specialized code here and/or call the base class<br />
}<br />

in your implementation
if class wizard found to be not helpful, simply code manually,

this is enough to enable.

for enabling individual controls ,
use
ON_UPDATE_COMMAND_UI(id /* control id*/, memberFxn ) in the message map.

Best Regards

vivekphlp4-Jun-07 1:32

4-Jun-07 1:32

Thanks its working nicely . . . can u plz explain what is happening behind..
1) the UpdateCmdUI was not in Class wizard
2)no code was given inside
CYourDlgBarClass::OnUpdateCmdUI(IN CFrameWnd,IN BOOL)
{
}
then how it is enabled???

3)What is the IN type

oops a small probs its not coming in order.. i added it after the main tool bar buts its comming before the standard tool bar..

Proud To Be an Indian

Rajkumar R4-Jun-07 21:38

get rid of icon on title bar of dialog

4-Jun-07 21:38

1) No it can be found in class wizard, I donot have issue in VS2005,
2) The default implementation will disable it, we overrided it.
3) IN is simply a empty macro, used just for code readability,
(the parameter is input that is caller donot expect change, there is also OUT macro).

You need to use DockControlBar() with all parameters set to customise the order of docking.

Best Regards
Raj

nathan73-Jun-07 22:07

nathan7

3-Jun-07 22:07

hi, i noticed if i set border of a dialog to resizing, then there is an icon on the left hand side of the title bar, how can i remove it?

nathan

Hamid_RT3-Jun-07 22:11

Hamid_RT

3-Jun-07 22:11

Remove these codes of your program

SetIcon(m_hIcon, TRUE);			// Set big icon
SetIcon(m_hIcon, FALSE);		// Set small icon

WhiteSky

nathan73-Jun-07 22:58

nathan7

3-Jun-07 22:58

i don't hv SetIcon() function called in my code...

Hamid_RT4-Jun-07 1:08

Hamid_RT

4-Jun-07 1:08

Whats your application type?

WhiteSky

Mark Salsbery4-Jun-07 5:14

Mark Salsbery

4-Jun-07 5:14

I think WhiteSky meant to set the icon handles to NULL Smile | :)

::SendMessage(hwnd, WM_SETICON, ICON_BIG, (LPARAM)0);
::SendMessage(hwnd, WM_SETICON, ICON_SMALL, (LPARAM)0);

or with MFC

SetIcon(NULL, TRUE); // Set big icon
SetIcon(NULL, FALSE); // Set small icon

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

nathan74-Jun-07 17:20

nathan7

4-Jun-07 17:20

i put
SetIcon(NULL, TRUE); // Set big icon
SetIcon(NULL, FALSE); // Set small icon

into my OnInitDialog method, no use...
app type is a multi document windows application, this is a dialog of it

How to open associated files just double click it?

Mark Salsbery5-Jun-07 4:31

Mark Salsbery

5-Jun-07 4:31

Is the dialog window a client of another frame window?

What are all the window styles and extended styles you use when you create the dialog?

Mark

"Posting a VB.NET question in the C++ forum will end in tears." Chris Maunder

Peter, Chan3-Jun-07 21:53

Re: How to open associated files just double click it?

3-Jun-07 21:53

:->Some software,after you have installed,can open assiociated files just double click it.How to do that or how to write the code.I will be very thankful if somebody give me a little information or some code samples would be better.

Rajkumar R3-Jun-07 22:24

Re: How to open associated files just double click it?

3-Jun-07 22:24

Hi,
Simply you need the following information on the system registry,

HKEY_CLASSES_ROOT\.<fileextension> "<yourFriendlyName>"

HKEY_CLASSES_ROOT\<yourFriendlyName>\Shell\Open\command "<yourApplicationPath>"
HKEY_CLASSES_ROOT\<yourFriendlyName>\DefaultIcon "<yourApplicationIconPath>"

How to,
1. MFC will do for this using Doc/View Architecture
2. In Win32 you can use registry APIs
3. You can manually edit registry using regedit

Best Regards
Raj

Peter, Chan3-Jun-07 23:02

Re: How to open associated files just double click it?

3-Jun-07 23:02

1)My application is Dialog based. Then you mean that MFC will not do it for me automatically?
2)I think my application can not open the file directly. It only open the file with its menu item "Open File". Maybe I need to write a main() function to open the file in command line just like Java. But I am not very sure how does this main function really look like.

Thanks for your attention.

BR.

Rajkumar R3-Jun-07 23:21