Re: Problem in loading custom menu - C / C++ / MFC Discussion Boards

Sameerkumar Namdeo27-Jan-10 23:19

27-Jan-10 23:19

hello everybody,

Have gone through some application made in WPF and saw their painting means, drawing of controls, image etc..
They were just amazing.
One thing to be asked is how internally they are managing such fast, flicker free painting.
I tried to achieve such kind of optimized painting in Win32 or MFC applications, but to no success.
Please tell me which all points I am missing. Where I should look for concerned resources.

Thanks for your time.

Re: Painting in Win32, MFC and WPF ?

KingsGambit28-Jan-10 0:06

KingsGambit

28-Jan-10 0:06

Following link discusses some commonly used techniques:http://www.catch22.net/tuts/flicker[^]

CDocTemplate labelling a file yesAlreadyOpen after a document close

maycockt27-Jan-10 23:02

maycockt

27-Jan-10 23:02

Hi,

Following on from a question I asked yesterday, I am left with my document being closed and my view being reverted to default (empty) state, but being unable to open the file I was last viewing because the CDocTemplate has the file marked "yesAlreadyOpen".
The file is not open as I read the content of the file and then close it, but a I am uanble to re-view teh file again until I have opened another file and then come back to it.

Is there a flag or reset I need to apply in my OnFileClose function to clear that CDocTemplate flag?
If so, what would would I need to call?

TIA

Tony

Re: CDocTemplate labelling a file yesAlreadyOpen after a document close

Richard MacCutchan28-Jan-10 1:51

Richard MacCutchan

28-Jan-10 1:51

I'm not totally sure of this as I am not a regular user of MFC but you might try looking at RemoveDocument()[^].

MVP 2010 - are they mad?

Re: CDocTemplate labelling a file yesAlreadyOpen after a document close

krmed28-Jan-10 2:47

krmed

28-Jan-10 2:47

Hi again.

I just looked at the code in one of my SDI apps that does not exhibit the problem you're seeing, and I notice in the OnNewDocument function, it uses

if (!CDocument::OnNewDocument())
    return FALSE;

Perhaps you can call that when you close your first document and it might reset your flag.

Hope that helps.

Karl - WK5M
PP-ASEL-IA (N43CS)
PGP Key: 0xDB02E193
PGP Key Fingerprint: 8F06 5A2E 2735 892B 821C 871A 0411 94EA DB02 E193

Problem in loading custom menu

Anu_Bala27-Jan-10 21:31

Anu_Bala

27-Jan-10 21:31

Hi,
In my applcaition the menu is default like
------------------
File. View. Help.
------------------
But i dont want this.I want like
------------------
Applicaitionname
-------------------
To get this,i delete Help menu first and the applcaiton works fine.I delete Statusbar from View,works fine.Then i delete Toolbar from view menu but it shows the assertion error in
atmfc\src\mfc\winmdi.cpp on Line 132.

How can i get my custom menu.
Even i cannot these IDR_MAINFRAME menu and using new IDR_MAINFRAME with my menu.THis also creates same assertion problem.
Pls help me.
Im using VS2008.

Anu

Re: Problem in loading custom menu

KingsGambit28-Jan-10 0:09

KingsGambit

28-Jan-10 0:09

If you are removing resources then you may have to remove some parts of the source code as well which might be using these deleted resources. May be you can debug and check the call stack to see which call leads to the assertion.

Re: Problem in loading custom menu

krmed28-Jan-10 2:32

krmed

28-Jan-10 2:32

I'm going to guess that your application is an MFC MDI app. If that's the case, the MFC framework requires that the main menu MUST contain a minimum of 2 items (Normally File and View).

If you debug your application you should get a Debug Assertion. Click on the retry button and it will take you to the line that caused the problem. In my test case, it's on line 132 of winmdi.cpp (MFC source file). Look at the surrounding code and you'll see

int iMenu = pMenu->GetMenuItemCount() - 2;

// If this assertion fails, your menu bar does not follow the guidelines
// so you will have to override this function and call CreateClient
// appropriately or use the MFC V2 MDI functionality.
ASSERT(iMenu >= 0);

In the comments, it tells you how to handle this - override OnCreateClient.

Hope that helps.

Karl - WK5M
PP-ASEL-IA (N43CS)
PGP Key: 0xDB02E193
PGP Key Fingerprint: 8F06 5A2E 2735 892B 821C 871A 0411 94EA DB02 E193

Deselecting Tree Node Item in MFC

RS.Ratheesh27-Jan-10 19:53

RS.Ratheesh

27-Jan-10 19:53

How to deselect the tree item when clicking outside the tree node (i need to remove focusbox). I used the below code but i failed.

void CEditableView::OnLButtonDown(UINT nFlags, CPoint point)
{

TVHITTESTINFO tvInfo;
CPoint pt;
HTREEITEM m_pOldSel;
GetCursorPos(&pt);
m_treeCtrl.ScreenToClient(&pt);
tvInfo.pt = pt;
UINT uFlags = 1;
UINT flags;
HTREEITEM htItem = m_treeCtrl.HitTest(pt);
if ((htItem != NULL))
{
m_pOldSel = m_treeCtrl.GetSelectedItem();
m_treeCtrl.Select(htItem, TVGN_DROPHILITE);
m_treeCtrl.GetCheck(htItem);
}
else
{
m_treeCtrl.Select(htItem, TVGN_DROPHILITE);
}

CView::OnLButtonDown(nFlags, point);
}

Re: Deselecting Tree Node Item in MFC

David Crow28-Jan-10 3:42

David Crow

28-Jan-10 3:42

ratheeshnair123 wrote:
else
{
m_treeCtrl.Select(htItem, TVGN_DROPHILITE);
}

Why would you do this if htItem is NULL?

"One man's wage rise is another man's price increase." - Harold Wilson

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How to use library files.

Paulraj G27-Jan-10 19:52

Paulraj G

27-Jan-10 19:52

Hi...

I have to some static library files.

I have added the library name in project setting.

but the library files are not working...

any help will be appriciated...

Thanks...

G.Paulraj

Re: How to use library files.

CPallini27-Jan-10 21:04

CPallini

27-Jan-10 21:04

Paulraj G wrote:
I have added the library name in project setting.

You should:

Add the .lib files as linker input (additional dependecies).
Make Visual Studio aware of the folder(s) wherein such library files are (add the folders in the VC++ directories list).
Include the appropriate headers in your source files.

Paulraj G wrote:
but the library files are not working...

What (the fresh hell) does it mean? Could you, please, be more specific?

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.

This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong.
-- Iain Clarke

[My articles]

Re: How to use library files.

Nelek27-Jan-10 21:12

Nelek

27-Jan-10 21:12

tsk tsk, you don't know what "files not working" mean? It means, of course, they are playing cards or drinking cooffe insteads of answering the calls of the process and doing their job. Imagine it... they are so lazy that don't even give any error message.

Regards.
--------
M.D.V. Wink | ;)

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
Rating helpfull answers is nice, but saying thanks can be even nicer.

Re: How to use library files.

CPallini27-Jan-10 21:32

CPallini

27-Jan-10 21:32

Re: How to use library files.

Cedric Moonen27-Jan-10 21:47

Cedric Moonen

27-Jan-10 21:47

Those library files, always reading books when they should be working... Roll eyes | :rolleyes:

Cédric Moonen
Software developer

Charting control [v3.0]
OpenGL game tutorial in C++

Re: How to use library files.

Paulraj G27-Jan-10 21:50

Paulraj G

27-Jan-10 21:50

Hi...

Thanks for both of your reply.

M.D.V.,

I am not that kind of person. Due to some network problem, Internet connection was cancelled. thats why the delay...

Sorry for the trouble...

G.Paulraj

Re: How to use library files.

CPallini27-Jan-10 22:14

CPallini

27-Jan-10 22:14

What kind of person?
For what I understood, he wrote about lazy libraries...
Smile | :)

Re: How to use library files.

Nelek27-Jan-10 22:26

Nelek

27-Jan-10 22:26

Mmmm... so?

I gave you an answer to your question and then I made a joke with the start point of one CPallini's comment (please pay attention to the "tree design" to see which message hangs on which other message and on the icons of "message type"). I never said anything about you. Roll eyes | :rolleyes:

Regards.
--------
M.D.V. Wink | ;)

Re: How to use library files.

Nelek27-Jan-10 21:08

Nelek

27-Jan-10 21:08

in grosso modo:

Once per library:
1) Install the library. Unzip it to a directory or install it via a package manager.
2) Tell the compiler where to look for the header file(s) for the library.
3) Tell the linker where to look for the library file(s) for the library.

Once per project:
5) Tell the linker which static or import library files to link.
6) #include the library's header file(s) in your program.
7) Make sure the program know where to find any dynamic libraries being used.

Regards.
--------
M.D.V. Wink | ;)

Find compression type jpeg image

Game-point27-Jan-10 17:40

Game-point

27-Jan-10 17:40

Hello Sirs,

How to find the compression type of jpeg, when we give one sample input jpeg file the output result is this image contains (ex.) xxxx compression type. How to identify it .?
please replay

Failure is Success If we learn from it!!

Re: Find compression type jpeg image

Rajesh R Subramanian27-Jan-10 18:29

Rajesh R Subramanian

27-Jan-10 18:29

Game-point wrote:
How to find the compression type of jpeg, when we give one sample input jpeg file the output result is this image contains (ex.) xxxx compression type.

JPEG images use JPEG Compression. May be you should hardcode the output?

“Follow your bliss.” – Joseph Campbell

Making an adaptive studying application [modified]

rbwest8627-Jan-10 14:26

rbwest86

27-Jan-10 14:26

Hello all,

I am trying to figure out how to make an adaptive program, which asks questions and if you get it wrong, it will ask you another question in that area.

I know this will utilize arrays but I am just asking for some guidence on if I should use looping statements or write the whole thing out.

Thoughts on where to start?

"EDIT: The source is on the 9'th reply to this thread. Please read it to help me out."

V/R

Rob

modified on Thursday, January 28, 2010 10:25 AM

Re: Making an adaptive studying application

«_Superman_»27-Jan-10 15:53

«_Superman_»

27-Jan-10 15:53

CAT[^]

«_Superman_»
I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

Re: Making an adaptive studying application

rbwest8627-Jan-10 17:32

rbwest86

27-Jan-10 17:32

thank you very much, I am reading that now.

Now I have a question. I have the program ask the question

"What is the answer to this queston?"

It then reads the users input, and checks if the answer was correct. If the answer was correct, it will continue. The problem it reads the user input and checks it with the answer, the program exits. I think the problem is its not clearing the user input for the next question.

Re: Making an adaptive studying application

«_Superman_»27-Jan-10 18:44

«_Superman_»

27-Jan-10 18:44

It would help if you can post the relevant portion of your code.

«_Superman_»
I love work. It gives me something to do between weekends.

Microsoft MVP (Visual C++)

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