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As toxcct alludes to, you can use DDX and then initialize each variable before calling UpdateData() or if you're not using DDX you could write a loop that would loop through all the controls on the dialog and then using the SetWindowText message, blank all controls.
Cheers,
Tom Archer - Archer Consulting Group
"Eat your brussel sprouts, Junior. There are starving Chinese children American programmers that would kill for that food!"
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I am using SQL SERVER 2000 database,in my table, there are some fields without data .
I am using Visual C++ 6.0, when I show this record on my form, i am seeing abnormal writting on these fields that are empty(like !!!!!!)
In the date field that i have not write any thing I see 1/1/1900, why ?
What to do please ?
Urgent
I am learning my self
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mikobi wrote:
Urgent
yeah man, first of all, if you want a quick answer that satisfy you, begin with express yourself clearly.
well, now, don't you use a default constructor of your date object that fills it with 1/1/1900 ?
TOXCCT >>> GEII power
[toxcct][VisualCalc]
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No,these date fields are empty when i introduce data on the records.
when a look on the SQl server 2000 database I see this. This problem is not Visual c++ but SQl server.
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I'm trying to use resetText () to reset values of some text boxes to their default. I'm using it as follows,
<br />
myTextbox->ResetText ();<br />
but all this seems to be doing is clearing the text instead of resetting defaults.
Any ideas???? Because I'm stuck.
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richiemac wrote:
myTextbox->ResetText ();
I Believe there is No CEdit::ResetText() function exist!, are you using custom EditBox
"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
cheers,
Alok Gupta
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Sorry it's not a MFC application. It's a .net application so it's System::Windows::Forms::TextBox __gc *.
Does that help or should I be asking this elsewhere??
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Hi, I'm trying to prevent a richedit control from processing the WM_KEYDOWN keyboard event whenever the user presses the tab key. The code below does not work for some reason I don't know!! any ideas are appreciated.. thanks
<br />
case WM_NOTIFY:<br />
{<br />
LPNMHDR pNmhdr = (LPNMHDR)lParam;<br />
switch(pNmhdr->code) <br />
{ <br />
case EN_MSGFILTER:<br />
{<br />
MSGFILTER* pMsgFltr = (MSGFILTER *)lParam;<br />
switch(pMsgFltr->msg)<br />
{<br />
case WM_KEYDOWN:<br />
if (pMsgFltr->wParam == VK_TAB)<br />
{<br />
return 1;<br />
}<br />
break;<br />
}<br />
}<br />
break;<br />
} <br />
}<br />
break;<br />
(a.k.a. Wal2k)
www.wal2k.com
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Use WM_CHAR instead of WM_KEYDOWN
-Luis
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now it works perfectly, thanks a lot...
(a.k.a. Wal2k)
www.wal2k.com
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I've got a DialogBar A docked at the top of the frame window.
How can I do to dock another DialogBar B at the right side of DialogBar A.
I tried pFrame->DockControlBar(pDialogBarA, AFX_IDW_DOCKBAR_TOP|AFX_IDW_DOCKBAR_RIGHT) but the AFX_IDW_DOCKBAR_xxx only refer to the frame window
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Hi,
Please, forgive me to post to this specific forum. If that is not appropriate, could you point me to some more relevant place?
I'm a complete newbie in using lexx/yacc -like tools in order to build a syntax highlighter add-on to Visual Studio .NET. The thing that is bugging me is that:
each time the lexer recognizes a token, I cannot reliably retrieve the starting position of the matched text in the input string. I'm using something like this that fails for alternate start states in the lexer :
<br />
std::string line;<br />
...<br />
int a_token;<br />
int a_pos = 0;<br />
<br />
while ((a_token = m_lexer.yylex()) != 0) {<br />
<br />
int pos = line.find(m_lexer.YYText(), a_pos);<br />
int end = pos + m_lexer.YYLeng();<br />
<br />
a_pos = end + 1;<br />
The code works almost correctly most of the time (although it doesn't seem right). But it crashes for the input grammar :
<br />
%x single_quotes_string<br />
single_quote ''<br />
%%<br />
' { BEGIN(single_quotes_string); }<br />
<br />
<single_quotes_string>{<br />
[^'\n]*|{single_quote}* <br />
' BEGIN(INITIAL); return TK_STRING; }<br />
\n { BEGIN(INITIAL); return TK_STRING; }<br />
}<br />
%%<br />
<br />
--
Maxime Labelle
maxime.labelle@freesurf.fr
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Hi All,
Im creating a dll and I want to put in the code a way to create a registry key. Im only trying to do something very simple - (1) Create a registry key & (2) Have a vaule pointing to the root of c:\
Ive just tried the basic regcreatekeyex method and although it compiles it does not actually create anything and I think ive missed something very fundamental here (please forgive the noobie status). Here is the code:
DWORD dwRes, dwDisposition;
SECURITY_ATTRIBUTES sa;
LONG lRes;
HKEY hkSub = NULL;
lRes = RegCreateKeyEx(HKEY_CURRENT_USER, "mykey", 0, "", 0,
KEY_READ | KEY_WRITE, &sa, &hkSub, &dwDisposition);
It compiles fine but when i run regedit and try to find "mykey" it comes up with nothing. Any help would be greatly appreciated. Thanks
Nic
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try:
lRes = RegCreateKeyEx(HKEY_CURRENT_USER, "mykey", 0, NULL, 0,
KEY_READ | KEY_WRITE, NULL, &hkSub, &dwDisposition);
Since you don^t fill the security attributes struct, passing a NULL pointer should do what you want. Same with classname.....
Greetings,
Davy
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Hi guys
I've got an SDI app and from the view I call a dialog like this.
In CMyView.cpp
void CMyView::OpenMydialog()
{
CMyDialog dlg;
dlg.SetFather(this);
dlg.DoModal();
}
and in my dialog I do this
In MyDialog.h
class CMyView;
CMyView *m_pFather;
void SetFather(CMyView *p_pFather);
and in MyDialog.cpp
#include "myappView.h" (but due to this I have to include first myappDoc.h")
void CMyDialog::SetFather(CMyView *p_pFather) {
m_pFather=p_pFather;
}
What's the usual (and right) way to acces the parent (View) class without to add all these includes?
Now each time I compile , practically all app is compiled again and that's what I want to avoid.
Thanks in forwarding
Doc
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void CMyView::OpenMydialog()
{
CMyDialog dlg(this);
dlg.DoModal();
}
//if you wonna get the parent in your dlg class
void CMyDialog::AMethod()
{
//get the parent
CWnd* pWnd = GetParent();
//you can also cast offcourse, but then you^ll need to include the MyView.h in the MyDialog.cpp:
CMyView* pMyView = (CMyView*)GetParent();
}
Hope this helps you,
Greetings,
Davy
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The problem is that if I follow your example I don't have access to the view variables.
If I have a member called m_nCalls in my view
How do I access to it?
If I do
CWnd* pWnd = GetParent();
pWnd->m_nCalls
I receive compiling a nice
error C2039: 'm_nCalls' : is not a member of 'CWnd' 
Doc
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If you want to access members of your view class you`ll need to cast....
CMyView *pMyView = (CMyView*)GetParent();
pMyView->m_nCalls = 2;
don^t forget to do an
#include "MyView.h" in your MyDialog.cpp file then..
Greetings,
Davy
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Another - more "correct" object oriented method - would be to pass the view's pointer to the dialog's constructor (as another poster pointed out). Then when the dialog needs to communicate with the view it would do so via messaging as opposed to directly accessing the view's members, which is an obvious OOP no-no
Cheers,
Tom Archer - Archer Consulting Group
"Eat your brussel sprouts, Junior. There are starving Chinese children American programmers that would kill for that food!"
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Hi
I want to read an Excel File from my C++ component without using
MFC.It is v. easy doing from VB. I create a ref. to MS Excel 10.0
object library and use the workbook.
Please let me know how to achieve the same using C++.
Thanks,
Radix
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AnuradhaCpp wrote:
I create a ref. to MS Excel 10.0
object library and use the workbook.
You can do the same with C++. See the MSDN article Q178749 for an example.
"Ideas are a dime a dozen. People who put them into action are priceless." - Unknown
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