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There is no "official" way to do so, and most people that tried found it easier to "clone" the windows message box, rather than hooking the existing one.
You find a few imlementations on CP.
Clickety[^]
"Der Geist des Kriegers ist erwacht / Ich hab die Macht" StS
sighist | Agile Programming | doxygen
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Been playing around with DnsQuery() but i can't find a way to convert from IP4_ADDRESS to a string.
Hoping you can help me.
ScorpioMidget
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Microsoft provides functions to retrieve the four bytes of the IP adress. So call them one after another, and use a CString or strcat to concatenate the result.
~RaGE();
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Many thanks, i've got it working now.
ScorpioMidget
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Does gethostbyaddr() or inet_ntoa() work for you?
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Not tried them yet, will have a go in a few minutes.
ScorpioMidget
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I have a question regarding a MSComm Control on a simple dialog form with a thread that exits with an error code 0x1.
A new project created with VC++ 6.0 App Wiz, simple dialog, with a MSComm control and a variable mapped to m_Commm and one command button, OpenClose.
In 'OnOpenClose' place:
m_Comm.SetCommPort(1);
m_Comm.SetPortOpen(true);
// Doesn't seem to matter whether I
// put additional code in here or not.
m_Comm.SetPortOpen(false);
While using an external analyzer, I can see that the port in question is opening and closing, in fact with additional code I can send and receive data through this port, but always when I close the port the debug window shows a message that the thread has closed with error code 0x1. As near as I can tell this corresponds to ERROR_INVALID_FUNCTION.
So my question is; Do I actually have an invalid function, or am I misreading the thread error message?
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I have been using MSComm for a while now, and I don't use the .SetPortOpen(FALSE), just let the destructor close it when the application exits. This works fine when I exit the app then sue Hyperterminal etc..
Elaine ![Rose | [Rose]](https://codeproject.global.ssl.fastly.net/script/Forums/Images/rose.gif)
The tigress is here 
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i recomment not to use mscomm32.ocx,it sometimes does not work well in windows 2k and windows xp,you can use class CSerialPort that can be download from internet
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Hi all,
Is there any way to enum all DCs in a domain, using ADSI or DS API on a win2000 box ???I have already done this sometime ago using NetServerEnum (NETAPI).
- I´ve found DsGetDcOpen/DsGetDcNext but they require Windows XP or later...
- I´ve tried the "Role Property" for IADSComputer Class, but the WinNT and LDAP providers doesn´t suport it...
Thanks in advance
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Question:
Is it possible to hide and to inactivate a button on a dialogbox if a certain condition has occured?
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ShowWindow(SW_HIDE)
EnableWindow(FALSE)
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get access to the button (or other control) inside the dialog (this is the this in the code !)
if its allready exists as a member var, everythings fine ...
myBnt.EnableWindow( FALSE );
myBnt.ShowWindow( SW_HIDE );
if not get its CWnd-Pointer via the controls resource id :
CWnd* pBnt = this->GetDlgItem( IDC_BUTTON1 );
if(pBnt != NULL) pBnt->EnableWindow( FALSE );
if(pBnt != NULL) pBnt->ShowWindow( SW_HIDE );
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Thanks a lot!
Meanwhile I found that it also seems to work with:
myB.ShowWindow(SW_HIDE); and
myB.ShowWindow(SW_SHOWNORMAL);
Is there a difference between myB.ShowWindow(SW_SHOWNORMAL); and
myB.EnableWindow( FALSE );
Another question:
In my application I do not have any 'OK' or 'Cancel' buttons. But if I press the enter button on my keybord the application terminates... and I don't know why.
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Vassili wrote:
Is there a difference between myB.ShowWindow(SW_SHOWNORMAL); and
myB.EnableWindow( FALSE );
Yes.
Vassili wrote:
In my application I do not have any 'OK' or 'Cancel' buttons. But if I press the enter button on my keybord the application terminates... and I don't know why.
Even though you don't have an OnOK() or OnCancel() handler, the defaults are still being called. They, in turn, call EndDialog().
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Vassili wrote:
Is there a difference between myB.ShowWindow(SW_SHOWNORMAL); and
myB.EnableWindow( FALSE );
Yes. ShowWindow will only hide the button, but it will still be there and active, the only thing is you can'T see it. If for some reason, it gets displayed again (Some lost message ..) the user can use it.
EnableWindow really disables the button functionnality.
If you use these functions on a "usual" button (CButton), ShowWindow(SW_HIDE) will make it disappear whereas EnableWindow(False) will make it unclickable and will grey its caption. I think this make clearer the difference between hiding a control and disabling it.
Vassili wrote:
n my application I do not have any 'OK' or 'Cancel' buttons. But if I press the enter button on my keybord the application terminates... and I don't know why.
From Mike Dunn's FAQ : http://www.codeproject.com/cpp/cppforumfaq.asp#mfc_dlgclosekeys[^]
~RaGE();
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the other question ... the ok and cancel button which are not there but working via keystrokes ...
If you want to do nothing in your dialog, just override the default handlers of these keys :
class CMyDialog::CDialog
{
.
.
virtual void OnOK( ) { /* do nothing*/ };
virtual void OnCancel( ) { /* do nothing*/ };
}
for details look at the msdn descriptions of these cdialog members, for example OnOk :
CDialog::OnOK
virtual void OnOK( );
Remarks
Called when the user clicks the OK button (the button with an ID of IDOK).
Override this member function to perform the OK button action. If the dialog box includes automatic data validation and exchange, the default implementation of this member function validates the dialog-box data and updates the appropriate variables in your application.
If you implement the OK button in a modeless dialog box, you must override the OnOK member function and call DestroyWindow from within it. Don’t call the base-class member function, because it calls EndDialog, which makes the dialog box invisible but does not destroy it.
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Hello,
In a MFC program,I want to change windows themes.I have tried to call ShellExcute() to install a theme, but it does not work automatically.The display window appeared,I need to press "apply" button to finish the install process. In StyleXP,a product of TGT soft,the display window did not appear when install a theme. Anyone who knows the anwser is warmly wellcomed to reply.
Thanks
Jia Wei
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I am using CTreeView with LPSTR_TEXTCALLBACK for all my item texts...
In OnGetdispinfo, I either write
a) When I have a safe LPCTSTR
pTVDispInfo->item.pszText = (LPTSTR)(LPCTSTR) pMyObject->GetName();
b) Or if need to build a string dynamically, I write something like this
m_strItem = pMyObject->BuildString();
pTVDispInfo->item.pszText = (LPTSTR)(LPCTSTR) m_strItem;
where m_strItem is a CString member of my CTreeView
It works perfectly but not in Unicode... for some of the child items instead of having my "BuiltString", I get 9999999...
Any idea?
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Please do not ask why but
<br />
m_strItem = (LPCTSTR) pMyObject->BuildString();<br />
did the trick...
pMyObject->BuildString() returned a CString... I wish somebody could enlighten me there!
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Anyone know how to draw a rectangle box onto a video source?
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Can you explain in more detail ?
Is this a captured image, real time capture etc. DirectShow is MSs DirectX video SDK, maybe there is information in there ?
Elaine ![Rose | [Rose]](https://www.codeproject.com/script/Forums/Images/rose.gif)
The tigress is here 
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I think the video source is from DirectShow.. using AmCap.... is there a filter function i can use to overlay my rectangle box onto it?
thanks
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I haven't used filters myself (just getting into DirectShow) but probably best to make a descendant of the existing filer and add the rectangle before the data is passed on.
Elaione
The tigress is here
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Hi, i am dealing witha code that uses OLE-Automation to communicate between two different applications.I have added some code to client and it bagan throwing exceptions at server while calling InvokeHelper() for one of interface functions..I have no clue why it throws the exception.I WANT TO DEBUG THROUGH THE SERVER TO UNDERSTAND WHERE THE PROBLEM IS.CAN ANYBODY HELP ME REGARDING THIS.
THANKS AND REGARDS.
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