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The callback function is not a member of a class. FormatMessage is a CString. Yeah, that probibly is not a great name for a variable i know. I still haven't figured out why the callback is not being called.
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I have discovered that I can send any variables in the EDITSTREAM structure even and invalid function pointer and the StreamIn function still returns 0 what the hell.
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Let me ask a different question then. When are you calling StreamIn...?
Steve S
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My question is, if it's possible to change the style (dwStyle) and the extended style (dwExStyle) of a created window.
I am working on a window that is a normal OVERLAPPEDWINDOW but when I switch to fullscreen it should be a POPUP etc.
Do I have to Destroy and create a new window?
Thanks!
Constantin
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Did you try ModifyStyle() and ModifyStyleEx()?
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Oh! you see I am not very used to MFC and didn't find it myself 
Guess that's what I searched. I'll try it...
Thanks!
Constantin
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The following code is from an artical on "Catching the 'Enter'
Key in windows and controls" by Randy More.
UINT SMUPPGrid::OnGetDlgCode()
{
UINT result = CListCtrl::OnGetDlgCode();
result = result | DLGC_WANTALLKEYS;
return result;
}
The function, OnGetDlgCode(), generates a compiler error indicating that this is a protected function and is not accessible.
What would it take to make this function accessible?
Bob Broadway
bob.broadway@att.net
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well,
look for the header file and move the method to the public part.
Probably you have to go up the whole 'pedigree'.
Derive a class from that class you want the function and in that class you have access to the protected function.
First method is to handle with care, second method sometimes is just kind of overkill.
Regards
G.Steudtel
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here it is, a piece of code that i cant get to work.
is there anyone that can spend 5 min with this and tell what is not correct?
http://www.xwega.com/toolbartest.exe[^]
this is a simple sdi app made with the wiz.
i have only added the menu "test" and the toolbar buttons
I have created the menu event handlers
the problem is that the menuitem "Ball" can be disable but the button "ball" with the same id is allways enable.
there is code to enable and disable the menu and toolbar button on the menu event handlers.
what is incorrect?
MSN:maxsnts@hotmail.com
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if the menu item ID and the toolbar have the same ID, they should behave the same, and get enabled, disabled with the same ON_UPDATE_COMMAND_UI handler.
Also, if you didn't define a command handler ( if the menu and toolbar button have no callback ) the menu item will not be enabled, unless there's a ON_UPDATE_COMMAND_UI handler.
show us the code so we can help.
I will not run the .exe ...
Maximilien Lincourt
"Never underestimate the bandwidth of a station wagon filled with backup tapes." ("Computer Networks" by Andrew S Tannenbaum )
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Hi,
I have to use a timer to perform some tasks at specific intervals. The timer needs to be very accurate (+- 10 ms) and use as less CPU as possible. So I decided to use a queue timer, which seems to be the better choice.
In fact, I have to trigger many events at different intervals. For exemple, I have to do something each 30 ms, another task each 120 ms and another one each 350 ms (between 1 to 25 events to trigger). What I'd like to know is which is the best solution :
- using only one timer that calls only one callback procedure each 10 ms for exemple and in this procedure increments variables to know which task to process
- or set up one timer with one callback procedure for each task I'd like to perform. (so it's as if I defined 25 timers but with intervalls of 30 ms, 120 ms, 350 ms ...)
Thanks...
Edouard
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In our experience it is far better to make different timers. Pls note that queue timer do not seem to have much accuracy, better are multimedia timers (timeSetTimer) or waitable timers (CreateWaitableTimer).
Regards,
andrea;P
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I have not designed an application that processes data in a time interval of unver 1000 ms. a time queue timer is one solution for For processs that work in the 500+ ms range. For anything shorter, I recommend a separate worker thread and WaitForSingleObject().
Kuphryn
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A student of mine doing a project needs to send some characters to an open window (i.e. from one running application to another). If I remember correctly this was done using a function called sendkeys in VBasic but not being a VC++ speaker I have no idea how it is done and nor does she.
If anyone can help, she'd be very grateful.
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Use SendMessage(WM_KEYDOWN, ???, 0) for virtual keys or SendMessage(WM_CHAR, ???, 0) for others.
Five birds are sitting on a fence.
Three of them decide to fly off.
How many are left?
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How to assign to window HELP id ?
I create Window as folows :
//CFrameWnd m_pFrame_RT;
hr = m_pFrame_RT->
//pFrameWnd->
CreateEx(
NULL|WS_EX_CLIENTEDGE ,//WS_CHILD |WS_BORDER
NULL,
(LPCTSTR)Title//"TREND Browser (General)"
,WS_VISIBLE |WS_CAPTION|WS_POPUP|//|WS_OVERLAPPED
//|WS_SIZEBOX | WS_MINIMIZEBOX | WS_THICKFRAME
WS_SYSMENU| WS_THICKFRAME| WS_MINIMIZEBOX| WS_MAXIMIZEBOX
//|WS_OVERLAPPEDWINDOW
,0,0,800,600,
g_pMainFrame->m_hWnd,
pMenu->GetSafeHmenu()// IDR_MENU1//
,0);//
if(m_pFrame_RT)
m_pFrame_RT->SetWindowContextHelpId(IDD_WND_HISTORY_WINDOW); // not works
thanks
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 Hello
I need your help, to read The source(tags) file of document HTML with visual c++.
Marco Javier
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Are you referring to file editing or socket programming?
Kuphryn
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i need to do a program wich modifies a winXP registry entry and XP security won't let me.
My code will read a registry a key , save it, and make a different key where to load the saved key. The RegLoadKey function call fails with error acces denied. I did set the "SeBackupPrivilege" and "SeRestorePrivilege" so the calling process should have all the security acces needed and the file is ok. But it still doesn't work.
Can you tell me what flag do i need to set in the acces token so i can load/save registry keys? MSDN says it's SE_BACKUP_NAME but it's not enough.
Could the error be in the file security descriptor? I would be strange since the file is created by RegSaveKey.
The MSDN link for Registry functions is
windows Development -> Windows base Services -> Windows System Information ->
SDK Doc -> Registry
Any ideas , suggestions to what it could be?
Thanks
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Hello Everybody,
I have created an AVI Player using DirectShow. This player is working fine. I have also created a View Window (with class name CViewWnd) using CFrameWnd class. This view
window is used in an application which plays its own customised files (of some other extensions) on this view window. Now:
1. I have to play the AVI file on this view window (i.e. integrate my AVIPlayer as a plugin to the original application). To achieve this I am passing CViewWnd instance to AVIPlayer (so
that I will get the cordinates and size of original view window and my AVI player window will overlap the view window. AVI window will be of same size and dimension as of view
window). But it gives error (read point 2 below).
2. Can I pass the instance of my View Window class in AVI Player. If so how? Here condition is that AVI player needs to be a seperate entity i.e. it does not understand my view
window class, neither I can include the view window header in AVI player. If I pass view window as parameter to my AVIPlayer (as HWND *CViewWnd), it gives following error:
((Can not convert parameter from 'class CViewWnd' to 'struct HWND'. Types pointed are unrelated. Conversion requires reinterpret_cast, C-style cast or function-style cats.))
Pls tell me, how my AVIPlayer can understand this CViewWnd class.
Following statement in my AVIPlayer uses the CViewWnd:
pVideoWindow->put_Owner((OAHWND)pViewWnd);
Here 'pVideoWindow' is DirectShow interface and 'pViewWnd' is CViewWnd instance.
1. My original application AVI Player as AVIPlayer is a plugin to the application. So original application does not understand DirectShow.
2. AVI Player does not understand my original application.
So we have to use some MFC standard data type to be passed into my AVI Player.
Thanx in advance for the help.
Regards,
Saurabh Agarwal,
New Delhi, India
(saurabha@momentum-tech.com)
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