C / C++ / MFC

problem on "one or more breakpoints are not positioned on valid lines"

16-Aug-07 7:22

sudheee wrote:
by tracking the position of the file pointer u can find whether the opened document have unsaved changes or not.

I'm going to give you the benefit of the doubt and assume you are kidding. Tracking whether a file has changed by looking at the file pointer is not even a remote possibility. Roll eyes | :rolleyes:

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

cy163@hotmail.com16-Aug-07 4:04

cy163@hotmail.com

16-Aug-07 4:04

Hello ALL,

I sometimes encountered the following errors when setting breakpoints in VC 6.0 SP6.

" one or more breakpoints are not positioned on valid lines"
" the breakpoints haved been moved ..."

I wonder what code lines are invalide for setting breakpoint.

Re: problem on "one or more breakpoints are not positioned on valid lines"

KarstenK16-Aug-07 4:23

KarstenK

16-Aug-07 4:23

it happens when files got modified without the VC6 changed the breakpoint lines correctly. For instance with an external editor and VC wasnt open.

Greetings from Germany

Re: problem on "one or more breakpoints are not positioned on valid lines"

David Crow16-Aug-07 4:40

How to retrieve font size of a dialog box??

16-Aug-07 4:40

cy163@hotmail.com wrote:
I wonder what code lines are invalide for setting breakpoint.

Any number of reasons could cause this. For example:

if (some_condition && // if you set a breakpoint on this line, the debugger would move it to the next line
    some_other_condition)
{
   ...
}

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

vasmvr16-Aug-07 4:03

16-Aug-07 4:03

Hi guys,
can someone tell me how i can retrieve the font size of a Static box of a dialog box?

I hope someone can help me.

Thanks in advance

ashukasama16-Aug-07 4:24

ashukasama

16-Aug-07 4:24

CFont* fn = GetdlgItem(ID of static Smile | :)

Box)->GetFont( )
Smile | :)

vasmvr16-Aug-07 4:39

16-Aug-07 4:39

Thanks, that's right, but how can i retrieve di dimension of the font in a int variable, to set the height of my static control?

David Crow16-Aug-07 4:42

16-Aug-07 4:42

vasmvr wrote:
...how can i retrieve di dimension of the font...

That information is contained within the LOGFONT structure.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

vasmvr16-Aug-07 4:51

16-Aug-07 4:51

How can i get this logfont?

jhwurmbach16-Aug-07 4:53

jhwurmbach

16-Aug-07 4:53

CFont::GetLogFont()

Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal.
George Orwell, "Keep the Aspidistra Flying", Opening words

ashukasama16-Aug-07 4:55

ashukasama

16-Aug-07 4:55

CFont* font = pWnd->GetFont();
if (font)
{
LOGFONT lf;
font->GetLogFont(&lf);
}
Smile | :)

David Crow16-Aug-07 5:46

16-Aug-07 5:46

See here.

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

vasmvr16-Aug-07 5:07

16-Aug-07 5:07

Thanks all, now i have to understand why this value is negative.....and if this value is in client value

Mark Salsbery16-Aug-07 5:14

Mark Salsbery

16-Aug-07 5:14

They hide that information in the documentation[^] Smile | :)

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

David Crow16-Aug-07 5:49

16-Aug-07 5:49

Stealing Mike's thunder, eh?

"A good athlete is the result of a good and worthy opponent." - David Crow

"To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

Beginners question on building Bento4 SDK

Mark Salsbery16-Aug-07 5:53

Mark Salsbery

16-Aug-07 5:53

Nah - not stealing...it's a tribute!

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

paul903816-Aug-07 3:55

paul9038

16-Aug-07 3:55

If possible would anyone have time to explain how the following file contents can be used on a windows XP platform to build the BENTO4 SDK for mpeg4 programming. Only new to this and on a high learning curve so any help appreciated. Am trying to convert it to a bat file but am having no success. I also have VS2005 available but can't work out if this file can be used in that environment.
make-sdk.sh file contents:

AP4_ROOT=../../..
SOURCE_ROOT=$AP4_ROOT/Source
BUILD_TARGET_DIR=$AP4_ROOT/Build/Targets/x86-microsoft-win32-vs2005

CP="cp"
MKDIR="mkdir -p"
for config in Debug Release
do
SDK_DIR=$config/SDK
$MKDIR $SDK_DIR
$MKDIR $SDK_DIR/include
$MKDIR $SDK_DIR/bin
$MKDIR $SDK_DIR/lib
$CP $SOURCE_ROOT/Config/*.h $SDK_DIR/include
$CP $SOURCE_ROOT/Core/*.h $SDK_DIR/include
$CP $SOURCE_ROOT/Codecs/*.h $SDK_DIR/include
$CP $SOURCE_ROOT/Crypto/*.h $SDK_DIR/include
$CP $SOURCE_ROOT/MetaData/*.h $SDK_DIR/include
$CP $BUILD_TARGET_DIR/AP4/$config/AP4.lib $SDK_DIR/lib
$CP $BUILD_TARGET_DIR/*/$config/*.exe $SDK_DIR/bin
done

Problem while assigning 'this' pointer

Waldermort16-Aug-07 2:42

Waldermort

16-Aug-07 2:42

I have a real strange problem and so far I have been unable to find the cause. I have a vector of 13 structures ( representing playing cards ) which I need to arrange into sets. For this I have created a cSet base class from which I have derived all the various types of sets.

typedef struct _tagged_tile 
{
	LPTILE		Addr;
	TILEFACE	Face;
	TILESUIT	Suit;
	bool		Used;
	int		Cost;
	LPVOID		Set;
} TAG, *LPTAG;

Basically a create a set, try adding all the cards ( a pointer within the above vector ) in the hand until the set is full, if not full I fall back to another derived instance. There are six derived types in all, each with it's fallback method ( except the last ).

This part of the code works without problems, but I want to be able to track which instance of a set a certain structure belongs to. For this I have a void* within the structure, when a set is able to accept a structure I store the this pointer ( pointer of the derived class not the base ).

The trouble is, each time I assign the pointer, the data held in each of the following structures within the main vector becomes garbled. Almost as if the memory has been shifted.

Has anybody come across a similar problem?

Maximilien16-Aug-07 2:54

Maximilien

16-Aug-07 2:54

I think you cannot keep a pointer to an item in a collection ( are you talking about a std::set ? )

Maximilien Lincourt
Your Head A Splode - Strong Bad

Waldermort16-Aug-07 3:00

Waldermort

16-Aug-07 3:00

Maximilien wrote:
are you talking about a std::set ?

No, the set class mentioned above is a class of my own creation, not a collection.

cSet is the base class for six derived types. When I say set, think of a combination of playing cards arranged into groups.

jhwurmbach16-Aug-07 3:18

jhwurmbach

16-Aug-07 3:18

When you add cards, you store the cards in a collection of some sort?
Does this collection rearrange its memory to grow?

Though I speak with the tongues of men and of angels, and have not money, I am become as a sounding brass, or a tinkling cymbal.
George Orwell, "Keep the Aspidistra Flying", Opening words

Waldermort16-Aug-07 3:22

Waldermort

16-Aug-07 3:22

Each instance of a derived class is dynamically allocated and added to a vector of cSet pointers. After all the cards have been processed, I run through this vector deleting any empty sets. So no, the memory is not rearranged. Another point to note, the problem occurs before deleting any empty sets.