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It crashes in afxwin2,. saying for the postmessage that(IsWindow) isnt true.
Here is my code:
void CTrio::OnClose()
{
<code>
m_pParentWnd->PostMessage(UDM_PHOTO_CLOSED,WPARAM(this),0);
}
CDialog::OnClose();
DestroyWindow();
}
If I add the commented out if., it never goes into it to post.
AFXWIN_INLINE BOOL CWnd::PostMessage(UINT message, WPARAM wParam, LPARAM lParam)
{ ASSERT(::IsWindow(m_hWnd)); return ::PostMessage(m_hWnd, message, wParam, lParam); }
#
Appreciate your help,
ns
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You have your "if (IsWindow" line commented out. 
Regards.
Alvaro
There are no stupid questions, but there are a lot of inquisitive idiots. -- despair.com
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I know....but if I put the if in, the messgae NEVER gets posted!! I need to post it!
Appreciate your help,
ns
yet I've posted to the parent successfully with the same pointer elsewhere.....
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Is your parent window still around at this point? If so, use the debugger to check that the value of your member variable is still valid. Perhaps it's getting changed somewhere.
Also, if your parent is going away before the dialog box, and that's OK with you, you may consider moving the code in your message handler to the dialog's class. Another option is to write code in the parent window to close the dialog box before going away.
Regards,
Alvaro
There are no stupid questions, but there are a lot of inquisitive idiots. -- despair.com
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My parent is not going away at all!!!! not before and not after! I'll check the debugger. Thanks.
Appreciate your help,
ns
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This is bizaare, but I had so many classes where I used the parentWnd that in this one I didnt even retrieve it from the CReate() function where it came in as a 'this'. Fine. I see my carelessness that the debugger promptly showed me (thanks A M )
BUT my code compiled with this m_pPArentWnd variable being used but never declared anywhere in the class!!!! I checked several times but I do NOT have an m_pParentWnd defined in this class!!! 
Appreciate your help,
ns
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m_pParentWnd is a protected member of the CDialog class. Any class derived from CDialog will have access to this member variable.
See file AfxWin.h line 2639.
HTH
Sonork 100.11743 Chicken Little
"You're obviously a superstar." - Christian Graus about me - 12 Feb '03
Within you lies the power for good - Use it!
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 Thanks!!! I was really puzzled, and when I looked inb MSDN under CWNd there was no such member. Guess I should have searched for it in the MFC folder....
Appreciate your help,
ns
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ns,
I recommend you get acquainted with the F12 key. It takes you to where things are defined. If you had put the cursor on the variable and pressed F12, it would have taken you straight to where it's defined inside the CWnd source code!
All that's required is for you to add "Browse Info" to the project, which it will prompt you to do the first time you press F12. It's a really handy shortcut -- it's also part of the "right-click" menu.
Regards,
Alvaro
There are no stupid questions, but there are a lot of inquisitive idiots. -- despair.com
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I didnt know about F12! Many thanks!
Appreciate your help,
ns
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Hi guys,
I have a dialog with a slider control. I can use ON_WM_HSCROLL() and the OnHScroll(UINT nSBCode, UINT nPos, CScrollBar* pScrollBar) function to catch my slider. But what can I do if a have more than one slider?
I think that the fourth parameter "CScrollBar* pScrollBar" is supposed to be used to identify witch slider has been used. But i dont know how to used it?
help me please.
Regards
Everything's beautiful if you look at it long enough...
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MemLeak wrote:
think that the fourth parameter "CScrollBar* pScrollBar" is supposed to be used to identify witch slider has been used. But i dont know how to used it?
in your OnHScroll, compare that pScrollBar to the address of your slider:
if ((CWnd*)pScrollBar == &m_mySlider) {...}
or
if ((CWnd*)pScrollBar == GetDlgItem(IDC_MY_SLIDER)) {...}
-c
When history comes, it always takes you by surprise.
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Thanks!!
That's what I was looking for.
Everything's beautiful if you look at it long enough...
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Hi everyone,
First thanks for all of your help. It helps improve my knowledge everyday. Now for my next attempted trick I've created a dll which has a bunch of dialogs meant to pop up when called by an external app.
one of these dialogs requires the use of InitCommonControlsEx() becuase it uses the Progress control. I have initialized everything, and when the function is called it goes through the initialization process fine, but the dialog box NEVER gets displayed. I have no idea why. Here's my init code:
INITCOMMONCONTROLSEX InitCtrls;
// Initialize the common controls
InitCtrls.dwSize = sizeof(INITCOMMONCONTROLSEX);
InitCtrls.dwICC = ICC_PROGRESS_CLASS;
InitCommonControlsEx(&InitCtrls);
hTemp =CreateDialog(hDllHInstance,
MAKEINTRESOURCE(IDD_WORKING),
hWnd,
IuxWorkingDialogBoxWndProc);
if (hTemp == NULL)
error = GetLastError();
And the initialization in the WndProc (clipped from the rest of the function):
HWND m_hProgress;
switch( msg ) {
case WM_INITDIALOG:
m_hProgress = GetDlgItem(hDlg, IDC_PROGRESS);
SendMessage(m_hProgress, PBM_SETRANGE, 0, MAKELPARAM(0, m_progressRange));
SendMessage(m_hProgress, PBM_SETSTEP, 1, 0);
m_progressCounter = 0; // reset the progress counter
return 1;
break;
Any suggestions? Thanks in advanced.
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Stupid me. I knew it was something dumb. I forgot to set the dialog to a popup. It was set to child. Doh!
Thanks anyways!
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I have an app and I have created several icons for it in the one icon file. These are:
32x32 16M colors
32x32 256 colors
32x32 16 colors
16x16 16M colors
16x16 256 colors
16x16 16 colors
I'm running XP Pro and Home here at my office, and the icons show up fine. One of my beta testers, however, is running Win2K and he says the icon in the tray looks like a gray box.
Just wondering if there is something I did wrong - I thought by including both sizes and a variety of color depths, the O/S would use the appropriate icon and not have to muck it up any.
Thanks in advance...
Tommy
Tommy Evans
Trinity Technologies
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Render a set of 48x48 pixel icons.
48x48 16
48x48 256
48x48 16M
Kuphryn
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Just curious - what will that do for me?
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48x48 pixel is the desktop icon.
Kuphryn
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This is probably because the older Windows taskbar does not display 256 color and above icons. Make sure your tray icon is a 16 color icon, at least, if you're on an OS prior to XP.
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Well, I do have a 16-color in the icon resource. Does the order of the icons matter? Currently I have 16M, 256 then 16 in that order.
Thanks!
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The ordering of the images in the ICO file matters. You have to order them from lowest color depth to highest. Pre-XP OSes will choke on the 16M color image, as you've found out.
--Mike--
PROCRASTINATION: Hard work often pays off after time, but laziness always pays off now.
BUY MY SOFTWARE!! (please?) RightClick-Encrypt | 1ClickPicGrabber
My IntarWeb Homepgae!!!11
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When adding a custom control to a dialog resource, I can add a hex value for the Style.
How can I know that values that I can put in there ? beside looking at a .h file and doing all of the OR myself ?
and if I have the 0x50810000 value, what are the styles that are added to the custom control ?
Max.
Maximilien Lincourt
For success one must aquire one's self
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You would have to look the values up in the header file. AFAIK that is the only way.
0x50810000 => WS_CHILD | WS_VISIBLE | WS_BORDER | WS_TABSTOP
Sonork 100.11743 Chicken Little
"You're obviously a superstar." - Christian Graus about me - 12 Feb '03
Within you lies the power for good - Use it!
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Heya,
I've writing an application to interface with a telnet client to provide a nice graphical front-end to a remote piece of hardware. Unfortunately, the telnet interface is designed to be parsed by a human and so has no nice features like terminators and has random lag. Delays as long as 250ms are routine and although this poses no problems for a human reading the response; plays havok with an automated front end.
I was wondering if people out there had come across similar problems and what solutions they've tried and the success they've had. Currently, my sockets code runs with an 80% chance of getting all the data from the device. The big issue is that it is sooo slow as I deliberately wait for 250ms just in case.
Any ideas... Iain
----
"I would be careful in separating your weirdness, a good quirky
quantum weirdness, from the disturbed weirdness of people who take
pleasure from PVC sheep with fruit repositories."
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