C / C++ / MFC Discussion Boards

Stuart Dootson25-Aug-09 21:06

25-Aug-09 21:06

Varghese Paul M wrote:
Is there a way I can determine the result of the second CreateFile API without calling it?
ie, is there a way I can validate the second dwDesiredAccess by checking with the first dwDesiredAccess and return ERROR_SHARING_VIOLATION to the client without making a call to CreateFile API?

I don't believe so...and anyway, even if you could, the results could be invalid (by someone opening another handle on the file) before you could use them. Just open the file and be done with it. If it fails, it fails! But Win32 will tell you, through a combination of return code and GetLastError.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

LNK1107

MozhdehQeraati25-Aug-09 18:39

MozhdehQeraati

25-Aug-09 18:39

Hi everybody
I am writing a dll in C++.Net. I had a .h and .cpp file in visual C6.0 and I want to use it here,but there is no lib. First, I set the paths in project properties, but because there is no lib file, I only set the .h file path there. But while compiling there were two LNK errors: LNK2028 and LNK2019. I add it manually in the "Header files" section and "Source Files" section. But there is an error like this while compiling:

LNK1107: Invalid or corrupt file, cannot read at 0x306

I also include it in my code. What's wrong? Would you please help me?
Thanks in advance

Re: LNK1107

Code-o-mat25-Aug-09 20:45

Code-o-mat

25-Aug-09 20:45

Did you add the cpp file to the project? I don't mean the paths to folders where the cpp or header is sitting, i mean the file itself? If not, could it be that the unresolved symbols are defined in that cpp?

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Re: LNK1107

MozhdehQeraati25-Aug-09 21:31

MozhdehQeraati

25-Aug-09 21:31

of course I did. I added both the .h and the .cpp file in the solution explorer.

Re: LNK1107

Stuart Dootson25-Aug-09 21:08

Stuart Dootson

25-Aug-09 21:08

Sounds to me like you're linking against something that claims to be a .lib or .obj file, but isn't - could that be the header file?

I think you actually want to be adding the .h and .cpp files to your project and building them into it.\, from your question.

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

Re: LNK1107

MozhdehQeraati25-Aug-09 21:32

MozhdehQeraati

25-Aug-09 21:32

I did it. I added the .h and .cpp file in the solution explorer and build the project. but it doesn't work.

Re: LNK1107

Stuart Dootson25-Aug-09 22:08

Stuart Dootson

25-Aug-09 22:08

MozhdehQeraati wrote:
doesn't work

'Doesn't work' encapsulates sooo many ba things...

Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p

OnSize [modified]

zhenek9125-Aug-09 17:06

zhenek91

25-Aug-09 17:06

A question is such:overload a function OnSize(). I want, that buttons at the stretch of basic window either upwards or to the right saved the positions in relations to the overhead and right edges of main window.

Code:

void CMobileTISDlg::OnSize(UINT nType, int cx, int cy)
{
	CDialog::OnSize(nType, cx, cy);
	if(Flag)
	{
		 int nCount = ResData.size();
        for(int i=0;i<nCount;i++)
        {
            GetDlgItem(ResData[i].nID)->SetWindowPos(&wndTop, cx - ResData[i].aPoint.x, cy - ResData[i].aPoint.y, 0, 0, SWP_NOSIZE | SWP_SHOWWINDOW);
        }
	}
}

ResData is a vector, containing structures
Код:

struct  ResizeStruct
{
	CPoint aPoint;//left overhead corner of button
	UINT nID;//ID of button
};

Filling of structure:

void CMobileTISDlg::SetResData(UINT nID)
{
    ResizeStruct Res;
    CRect rc, rcForm;
    GetDlgItem(nID)->GetClientRect(&rc);
    GetClientRect(&rcForm);
    Res.aPoint.x = rcForm.right - rc.left; Res.aPoint.y = rcForm.bottom - rc.top;
    Res.nID = nID;
    ResData.push_back(Res);
}

A problem is such: at testing of the program the buttons appear in one place in the left corner of the program.
Started a debugger? top and right of Rect rc in function SetResData() are always equal to the zero. What is my error in?

modified on Wednesday, August 26, 2009 1:56 AM

Re: OnSize

Code-o-mat25-Aug-09 20:28

Code-o-mat

25-Aug-09 20:28

Instead of this:

zhenek91 wrote:
GetDlgItem(nID)->GetClientRect(&rc);

try this:

GetDlgItem(nID)->GetWindowRect(&rc);
ScreenToClient(&rc);

Also, read this[^] and pay attention what the remarks section says.

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Re: OnSize

Cedric Moonen25-Aug-09 20:32

Cedric Moonen

25-Aug-09 20:32

It's not an answer to your question, but you might be interested in this section[^] in the articles. Why redoing something that has probably already be done ?

Cédric Moonen
Software developer

Charting control [v2.0]
OpenGL game tutorial in C++

Re: OnSize [modified]

zhenek9125-Aug-09 20:39

zhenek91

25-Aug-09 20:39

Thank you, first variant helped me to solve problem

modified on Wednesday, August 26, 2009 2:45 AM

Adding Checkboxes to a list control in every column

Member 470944425-Aug-09 13:00

Member 4709444

25-Aug-09 13:00

Hi,

I read the article about "Adding Checkboxes to a list control" and it was really helpful.
But what I want to do is to add a checkbox in every column and every row. And I want to be able to read and set the checking.

Is there any way to do it?

At the moment my code looks like this:

listCtrl.SetExtendedStyle(listCtrl.GetStyle()|LVS_EX_CHECKBOXES);<br />
	CString str;<br />
	str.Format("Col0");<br />
	listCtrl.InsertColumn(0, str, LVCFMT_LEFT, 100);<br />
	str.Format("Col1");<br />
	listCtrl.InsertColumn(1, str, LVCFMT_LEFT, 100);<br />
	str.Format("Col2");<br />
	listCtrl.InsertColumn(2, str, LVCFMT_LEFT, 100);<br />
<br />
	int nItem;<br />
	<br />
	nItem = listCtrl.InsertItem(0, "Row0");<br />
	str.Format("Col1");<br />
	listCtrl.SetItemText(nItem, 1, str);<br />
<br />
	nItem = listCtrl.InsertItem(0, "Row1");<br />
	str.Format("Col2");<br />
	listCtrl.SetItemText(nItem, 2, str);

Thanks for every help,

Moritz

Re: Adding Checkboxes to a list control in every column

Code-o-mat25-Aug-09 20:34

Code-o-mat

25-Aug-09 20:34

I think the standard list control does not have such a feature, you have to do it yourself with owner drawn items and handling clicks in the list.

Sidenote: Why are you combining the normal styles with an extended style here:

Member 4709444 wrote:
listCtrl.SetExtendedStyle(listCtrl.GetStyle()|LVS_EX_CHECKBOXES);

? Isn't that suposed to be GetExtendedStyle() instead of GetStyle() in there?

> The problem with computers is that they do what you tell them to do and not what you want them to do. <
> Life: great graphics, but the gameplay sux. <

Re: Adding Checkboxes to a list control in every column

David Crow26-Aug-09 3:09

David Crow

26-Aug-09 3:09

Member 4709444 wrote:
Is there any way to do it?

I used XListCtrl for this.

"Old age is like a bank account. You withdraw later in life what you have deposited along the way." - Unknown

"Fireproof doesn't mean the fire will never come. It means when the fire comes that you will be able to withstand it." - Michael Simmons

Re: Adding Checkboxes to a list control in every column

Member 470944426-Aug-09 4:03

Member 4709444

26-Aug-09 4:03

Thanks for the help.
As I am very unexperinced with this, CListCtrl looks like an overkill to me.
Is there any easier way? I only need checkboxes, not animated lists Smile | :)

Thanks,

Moritz

Re: Adding Checkboxes to a list control in every column

David Crow26-Aug-09 4:09

David Crow

26-Aug-09 4:09

Member 4709444 wrote:
CListCtrl looks like an overkill to me.

Then why would you ask how to use checkboxes with it?

Member 4709444 wrote:
I only need checkboxes, not animated lists

Re: Adding Checkboxes to a list control in every column

Member 470944426-Aug-09 4:14

Member 4709444

26-Aug-09 4:14

Ahhh, sorry.
I meant, XListCtrl looks like an overkill to me.
X and C are so close together.

I understand how to use the CListCtrl.
The only thing I want additionally are checkboxes in more columns.

Thanks,

Moritz

Re: Adding Checkboxes to a list control in every column

David Crow26-Aug-09 4:17

David Crow

26-Aug-09 4:17

Member 4709444 wrote:
The only thing I want additionally are checkboxes in more columns.

And you can either do all of it yourself (which is not a trivial exercise), or you can use the control that Hans has already put together.

Re: Adding Checkboxes to a list control in every column

Member 470944427-Aug-09 4:32

Member 4709444

27-Aug-09 4:32

Thanks for the help.
As CListCtrl looks to complx for me for my small app, i decided to do all the click capturing manually and just to draw different background colors in stead of checkboxes.

There I only included this project for the colors: Adding color to Listview with customdraw[^]

Thanks again,

Moritz

Re: Adding Checkboxes to a list control in every column

David Crow27-Aug-09 4:43

David Crow

27-Aug-09 4:43

Member 4709444 wrote:
As CListCtrl looks to complx for me for my small app...

How can a list control be too complex here...

Member 4709444 wrote:
There I only included this project for the colors: Adding color to Listview with customdraw[^]

...but not here? I'm not convinced you know what it is that you do want.

The XListCtrl link I provided you required you to: 1) add two files to your project, 2) replace CListCtrl with XListCtrl, and 3) call the control's SetCheckbox() method for those columns you want to contain a checkbox. It does not get any simpler.

visual c++ MFC reading access data file

Merlin Vilhauer25-Aug-09 12:20

Merlin Vilhauer

25-Aug-09 12:20

I would like some example code in visual c++ for reading a access file . Pass a file name and receive the data back.

An example would work really well.

thanks.

Merlin Vilhauer

merlin Vilhauer

Re: visual c++ MFC reading access data file

Adam Roderick J25-Aug-09 18:09

Adam Roderick J

25-Aug-09 18:09

Just check

CODBCAccess: a CDatabase and CRecordset Wrapper[^]

Величие не Бога может быть недооценена.

Need a guideline of way to start my new challenge

ayeosq25-Aug-09 5:54

ayeosq

25-Aug-09 5:54

I will be given a char *text="cat sad cattle saddle"
I need to check if my char *pattern="ca" match any of the text
there are rules like "." matches any character
[rt] and as long as it match one of the character in the []...
this is crazy, anyone can sugguest a function in c++ that will do the job?

Re: Need a guideline of way to start my new challenge

David Crow25-Aug-09 7:42

David Crow

25-Aug-09 7:42

ayeosq wrote:
...anyone can sugguest a function in c++ that will do the job?

The string class has many methods. Have you looked? The CRT has functions like strstr() that might also interest you.

Re: Need a guideline of way to start my new challenge

Hristo-Bojilov25-Aug-09 8:04

Hristo-Bojilov

25-Aug-09 8:04

Your idea seems to be basic regular expressions evaluation system.Read this article how to build your own regex parser. Smile | :)

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