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Wanted to say, thanks for posting this. I had been scratching my head trying to figure out how to do this and was making it a far more difficult chore than it needed to be. This was the answer, so simple that I hadn't even considered it. worked perfectly by the way.
Mike - typical white guy.
"Political correctness is a doctrine, fostered by a delusional, illogical minority, and rabidly promoted by an unscrupulous mainstream media, which holds forth the proposition that it is entirely possible to pick up a piece of sh*t by the clean end."
Thomas Mann - "Tolerance becomes a crime when applied to evil."
As American as: hot dogs, apple and Sarah Palin.
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hi to all,
need to pass a string to a void function that does not have a parameter, looks like that:
int CMyString::GetLength (void)const
{
}
in the main function, the code is follow
CMyString string1;
string1 = "Hello world!";
int nLen = string1.GetLength();// should give nLen = 11.
The class CMyString should work like the class String in this case.
Do not k now how to implement the function GetLength().
Any help will be appriciated. Thanks.
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you don't know how to create a method in your own class ?
the class CMyString should hold a member variable that holds the buffer of some sort of the string.
just create a method that just do a strlen (if the buffer is a char* ) on the member variable.
something like :
class CMyString
{
//... some other stuff
char* m_internalBuffer;
int GetLength(){ return strlen(m_internalBuffer);};
}
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You should (like CString , for instance does):
- define a
CMyString constructor accepting a const char * as argument. - overload the
CMyString assignment operator (= ) to accept a const char * as argument. - both of the above methods should initialize
CMyString internal data member (a character buffer, for instance). - define a
GetLenght method returning the strlen of the internal character buffer.
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]
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susanne1 wrote: string1 = "Hello world!";
int nLen = string1.GetLength();// should give nLen = 11.
Why would you want to use a function that returned an incorrect value?
"Love people and use things, not love things and use people." - Unknown
"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch
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You're so meticulous, my 5 .
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]
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Hello,
I want to use a C++ function in order to check if a filename exists. I have already tried to use _access as well as _stat, but these functions also return true if the filename given is a fooldername instead. So how can I distinguish if it's a really a file or only a folder?
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Erik wrote: I want to use a C++ function in order to check if a filename exists.
See PathFileExists()[^]
Erik wrote: . So how can I distinguish if it's a really a file or only a folder?
See PathIsDirectory()[^]
It is a crappy thing, but it's life -^ Carlo Pallini
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Erik wrote: So how can I distinguish if it's a really a file or only a folder?
There's also GetFileAttributes() .
"Love people and use things, not love things and use people." - Unknown
"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch
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Hi All,
I need to create a notepad in Dialog based MFC application.I need some idea about this.
Help me......
Thanks & Regards,
Anitha
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AnithaSubramani wrote: I need to create a notepad in Dialog based MFC application.
Creating a SDI application and deriving view class from CEditView would be better choice for this.
I hope it helps.
Regards,
Sandip.
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Hi,
I need a example code.pls help me....
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Does Notepad with RE[^] help?
It is advanced but you can get started.
If you want you can even follow this tutorial Creating notepad[^]
BTW:
AnithaSubramani wrote: pls help me....
No need to write this in every post.
Everyone here will help you provided you give sufficient information.
Regards,
Sandip.
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AnithaSubramani wrote: I need a example code.
Open Visual Studio. Create a new SDI project. Derive the view from CEditView .
"Love people and use things, not love things and use people." - Unknown
"The brick walls are there for a reason...to stop the people who don't want it badly enough." - Randy Pausch
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AnithaSubramani wrote: I need a example code
You can create a working notepad application with the App Wizard.
Mark Salsbery
Microsoft MVP - Visual C++
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I want my control (CButton derived) has the same behaviour if CLICKED and DOUBLECLICKED.
Now, it is working well if CLICKED...I need to extend the functionality on DOUBLCLICK.
So, I simply added
ON_CONTROL_REFLECT_EX(BN_DOUBLECLICKED, CMyCButton::OnBnDblClicked)
In that function I want to do some similar to
BOOL CMyCButton::OnBnDblClicked(){
PostMessage(WM_COMMAND, MAKELONG(GetDlgCtrlID(), BN_CLICKED), (LPARAM) GetSafeHwnd());
return TRUE;
}
But in that way only my control receive the message BN_CLICKED , not the parent Dialog.
Please, what is the right way to send/post to the control (together to it's parent) that message?
Russell
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Have a look at here[^]...
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Thank you....but your solution looks work as my previus one, i.e. it is a perfect solution to manage the message inside the control, but his parent window doesn't receive the classic message BN_CLICKED
My be also I'm wronging something...
BOOL XBmpChkBtn::OnBnDblClicked(){
const MSG* pstMSG = GetCurrentMessage();
DefWindowProc(WM_COMMAND, MAKELONG(GetDlgCtrlID(), BN_CLICKED), (LPARAM) GetSafeHwnd());
return TRUE;
}
Russell
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Please correct as
DefWindowProc( WM_LBUTTONDOWN, pstMSG->wParam, pstMSG->lParam );
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The solution looks:
BOOL CMyCButton::OnBnDblClicked(){
GetParent()->PostMessage(WM_COMMAND, MAKELONG(GetDlgCtrlID(), BN_CLICKED), (LPARAM) GetSafeHwnd());
return TRUE;
}
or the same of:
ON_CONTROL_REFLECT(BN_DOUBLECLICKED, CMyCButton::OnBnDblClicked)
and
BOOL CMyCButton::OnBnDblClicked(){
GetParent()->PostMessage(WM_COMMAND, MAKELONG(GetDlgCtrlID(), BN_CLICKED), (LPARAM) GetSafeHwnd());
}
but I'm not sure that it is the right way to manage messages when using derived controls, I was aspecting to do everything inside the control class: that call to GetParent() looks strange to me.
any comments?
Russell
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You posted the solution for yourself.
You are handling the conversion from BN_DOUBLECLICKED to BN_CLICKED in the button control as you desire.
But the whole purpose was to change the message to the parent from BN_DOUBLECLICKED to BN_CLICKED.
So you need to send / post the message to the parent. Which the GetParent () helps you with. If it makes it clearer for you, try this:
BOOL CMyCButton::OnBnDblClicked()
{
HWND hButton = GetSafeHwnd ();
HWND hDialog = GetParent (hButton);
::PostMessage(hDialog, WM_COMMAND, MAKELONG(GetDlgCtrlID(), BN_CLICKED), (LPARAM)hButton);
}
Ends up being the same though. I'd use SendMessage rather than PostMessage, but that's a different question.
Iain.
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I'm according to you
Thank you
Russell
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This is the code i used ..........To CREATE a File
and enter a default string..
...........Ive TO USE VC++ MFC
void CFileApp::OnInsert()
{
HANDLE hFile = CreateFile(_T("C:\\Documents and Settings\\MyFile.ini"),
GENERIC_WRITE, FILE_SHARE_READ,
NULL, CREATE_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
if (hFile == INVALID_HANDLE_VALUE)
AfxMessageBox(_T("Couldn't create the file!"));
else
{
// Attach a CFile object to the handle we have.
CFile myFile(hFile);
static const char sz[] = "Hockey is best!";
// write string, without null-terminator
myFile.Write(sz, lstrlen(sz));
myFile.Close();
}
}
This works.....
BUt For INI I want to ENTER DATA SECTIN-WISE....
...........
Here Data is written just like in Text files...
I need to use ...GetProfileString....
WriteProfileString..... n so on...
how do i do it??
I NEED TO MAKE A PHONE DIRECTORY USING INI FILE......
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Do you plan to use as configuration file for your application ? If yes, this is a bit an outdated way of doing this. More recent applications use the registry to store config options.
If you choose to use the registry, search for articles on CP, there are really a lot. They should get you started.
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