C / C++ / MFC

22-May-06 11:01

hi peterchen,

thanx for your reply. I didnt quite get what you r saying in your reply...I can compile my program in unix shell with gcc compiler without any error. But i want to port my project to VC++. But in VC++ it is giving i m getting the error.

thanx,

jayashri

jay111

David Crow22-May-06 11:06

22-May-06 11:06

What peterchen is (probably) telling you is that isinf() is not part of the Win32 API, hence the need to make your own.

"The largest fire starts but with the smallest spark." - David Crow

jayashri200623-May-06 4:20

23-May-06 4:20

oh ok...thanks. so there is not easy way to check for infinity in VC++...

jay111

David Crow24-May-06 2:36

24-May-06 2:36

jayashri2006 wrote:
so there is not easy way to check for infinity in VC++...

Not that I know of, unless you are using the .NET framework.

"The largest fire starts but with the smallest spark." - David Crow

jayashri200624-May-06 11:56

24-May-06 11:56

oh, actually I am using .net framework...do u know the alternative way?

jay111

David Crow25-May-06 2:40

25-May-06 2:40

Then check out the Double.IsInfinity() method.

"The largest fire starts but with the smallest spark." - David Crow

jayashri200626-May-06 9:06

Pasting into a CEdit Control on a Dialog

26-May-06 9:06

Thank u so much!

jay111

Doug Knudson22-May-06 9:55

Doug Knudson

22-May-06 9:55

Hi All,

In VS 6 I copy data from a custom control on a dialog using my own clipboard management (see code below) and would like to paste it into a CEdit on the same dialog. I believe I am getting it to the clipboard correctly, in CF_TEXT format because I can paste the text into WordPad or Notepad just fine. I am unable, however, to paste my clipboard contents to the CEdit either with the CEdit context menu or Ctrl+V. Making this all the more confusing is that if I copy text from Wordpad, which presumably is in CF_TEXT format, I am able to paste into the standard CEdit just fine.

Any ideas would be greatly appreaciated!

Thanks,
Doug

// This just simulates the text I want to get to the clipboard<br />
	CString cellText = "This is a test";<br />
<br />
<br />
	// Open the clipboard and empty it<br />
	OpenClipboard();<br />
	EmptyClipboard();<br />
<br />
<br />
	// Get a chunk of memory for the formatted text<br />
	int dataStringLen = cellText.GetLength();<br />
	HANDLE dataHandle = GlobalAlloc(GMEM_MOVEABLE | GMEM_ZEROINIT,dataStringLen + 1);<br />
	char *memPtr = (char *)GlobalLock(dataHandle);<br />
<br />
<br />
	// Copy the data to our mem block<br />
	memcpy(memPtr,(char *)(LPCTSTR)cellText,dataStringLen + 1);<br />
	memPtr[dataStringLen] = '\0';<br />
<br />
<br />
	// Unlock the handle, place the data on the clipboard and then free the<br />
	// handle<br />
	GlobalUnlock(dataHandle);<br />
	SetClipboardData(CF_TEXT,dataHandle);<br />
	GlobalFree(dataHandle);<br />
<br />
	CloseClipboard();

Doug Knudson

Re: Pasting into a CEdit Control on a Dialog

zt978822-May-06 17:58

zt9788

22-May-06 17:58

<br />
if(OpenClipboard()){<br />
CString cellText = "This is a test";<br />
		HGLOBAL clipbuffer; 		<br />
		EmptyClipboard(); <br />
		clipbuffer = GlobalAlloc(GMEM_DDESHARE, cellText.GetLength()+1); <br />
<br />
char * buffer; <br />
		buffer = (char*)GlobalLock(clipbuffer); <br />
		strcpy(buffer, LPCSTR(cellText)); <br />
		GlobalUnlock(clipbuffer); 	<br />
		SetClipboardData(CF_TEXT,clipbuffer); <br />
		CloseClipboard();<br />
}<br />

Re: Pasting into a CEdit Control on a Dialog

Doug Knudson23-May-06 2:20

Doug Knudson

23-May-06 2:20

Thank you very much! Works like a charm!

Doug

Doug Knudson

Reading from a ListBox

Mahhouraaaaaa22-May-06 8:09

Mahhouraaaaaa

22-May-06 8:09

Hello i How can i read a string from a listbox ( MFC)
Thanx a lot !

Re: Reading from a ListBox

David Crow22-May-06 8:47

Re: Reading from a ListBox

22-May-06 8:47

By using the CListBox::GetText() method.

"The largest fire starts but with the smallest spark." - David Crow

Laxman Auti22-May-06 19:06

Laxman Auti

22-May-06 19:06

Mahhouraaaaaa wrote:
How can i read a string from a listbox ( MFC)

CString strData;
m_list.GetText(m_list.GetCurSel(),strData);

m_list is the Control variable of the CListBox Control.

Knock out 't' from can't,
You can if you think you can
Cool | :cool:

Sharing precompiled header in VC+ 2005

topus22-May-06 7:39

topus

22-May-06 7:39

I try to share .pch (precompiled header files) across my library (more than 50) but i failed.
Using VC+ 6.0 is possible to share the .pch file reducing compilation time but when i try this in VC+2005 i ave found a lot of problems...
Can anyone help me?
Tanks and sorry for the poor english...

Re: Sharing precompiled header in VC+ 2005

David Crow22-May-06 7:44

Re: Sharing precompiled header in VC+ 2005

22-May-06 7:44

topus wrote:
...but i failed.

What failed?

topus wrote:
Using VC+ 6.0 is possible to share the .pch file reducing compilation time...

I suppose you could in theory, assuming the files comprising each project were the same, but are you sure you want to? Why not just let the .pch file get built once for each project and be done with it? Your apt to spend more time trying to 'share' the file than you would just building it for each project.

"The largest fire starts but with the smallest spark." - David Crow

topus23-May-06 0:12

topus

23-May-06 0:12

Lock at this:
"Rebuild using shared precompiled headers doesn't work"
http://forums.microsoft.com/MSDN/ShowPost.aspx?PostID=105308&SiteId=1

Resizing child frame with nested csplitterwnd

Tarek Jabri22-May-06 7:37

Tarek Jabri

22-May-06 7:37

Hi everybody:
i have a child frame with four splitters and five views, when i resize the child frame (decreasing for example) only the size of the first view decreases until it becomes zero, so the second view`s size starts to decrease, and so one
i want to make all the views shrinks equally when resizing the child frame

any help is appreciated

thanks alot

Re: Resizing child frame with nested csplitterwnd

led mike22-May-06 7:54

led mike

22-May-06 7:54

WM_SIZE

"What classes are you using ? You shouldn't call stuff if you have no idea what it does"
Christian Graus in the C# forum

led mike

Re: Resizing child frame with nested csplitterwnd

Tarek Jabri22-May-06 8:01

Tarek Jabri

22-May-06 8:01

i know it must go in the onsize handler in the child
but i want to know how to do it?

Re: Resizing child frame with nested csplitterwnd

led mike22-May-06 8:10

led mike

22-May-06 8:10

Tarek Jabri wrote:
i want to make all the views shrinks equally

Tarek Jabri wrote:
but i want to know how to do it?

I don't understand what the problem is?

As the parent window size changes you have to calculate what "equal" is and then adjust the components (views, splitters, whatever) that are required, right?

"What classes are you using ? You shouldn't call stuff if you have no idea what it does"
Christian Graus in the C# forum

led mike

SQL Server tables are readonly, why?

e-DJ22-May-06 6:40

e-DJ

22-May-06 6:40

Hi,

I have developed a small application, using ODBC with Access.
I then ported my tables to SQL Server 2000.

When I Open() a Recordset, all my tables are opened in read/write-mode, except two tables, that I use all the time.

These two tables differ from the other tables only, that they contain a CTime field.
Here is my code

Favorit.m_strFilter="Username='"+myUser+"' AND Dokument='"+Number+"'";
Favorit.Open();
if(!Favorit.IsBOF())
{
    Favorit.MoveFirst();
    Favorit.Edit();
}
else
{
    Favorit.AddNew();
    Favorit.m_User=myUser;
    Favorit.m_Dokument=Number;
    Favorit.SetFieldNull(&(Favorit.m_Gelesen));
}
Favorit.m_Favorit=bChecked;
Favorit.Update();
Favorit.Close();

When AddNew() I get the message, that this record is readonly. It works well in Access, but AddNew() throws an exception, that this record is readonly. Why? And how can I repair it?

Juergen

David Crow22-May-06 6:49

22-May-06 6:49

What does CRecordset::CanUpdate() indicate?

"The largest fire starts but with the smallest spark." - David Crow

e-DJ23-May-06 5:45

e-DJ

23-May-06 5:45

CanUpdate() returns FALSE right after Open()

I also checked the rights on my SQL-Server but they seem to be ok. All other tables work well even when Update() is called.

I also dropped the table and created it new. Same effect Frown | :(

Juergen

David Crow24-May-06 2:32

24-May-06 2:32

e-DJ wrote:
CanUpdate() returns FALSE right after Open()

Are JOINs involved?

"The largest fire starts but with the smallest spark." - David Crow