C / C++ / MFC

Re: File + folder names proessing APIs

15-Sep-07 12:01

What about PathRemoveFileSpec()?

"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

Eytukan15-Sep-07 17:22

Eytukan

15-Sep-07 17:22

DavidCrow wrote:
PathRemoveFileSpec()

Yup, I was just trying to spot this guy, found and used it here[^].

Btw David, I have a simple question related to above, If you want to clear a char buffer[] (stack allocated) , what's the proper way?
like :

char szTemp[256];

<br />
strcpy(szTemp,"");<br />
*szTemp = 0;<br />
ZeroMemory(..)<br />
Memset(..)<br />
*szTemp = NULL;<br />

The Advantage in work-from-home is that...
we can blame the dog -Mark Salsbery

Best wishes to Rexx[^]

Re: File + folder names proessing APIs

David Crow17-Sep-07 2:51

17-Sep-07 2:51

VuNic wrote:
If you want to clear a char buffer[] (stack allocated) , what's the proper way?
like :

char szTemp[256];

I would use:

char szTemp[256] = { '\0' };

for initialization, and then memset() later on to clear its contents.

"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

need help

gentleguy14-Sep-07 16:52

gentleguy

14-Sep-07 16:52

Dear all

after i debugged my system, output showed me below: DlgOpenCylinder.cpp(376) : error C2601: 'OnCypasteImage' : local function definitions are illegal
Error executing cl.exe.

how to resolve this issue?

thanks

Li Zhiyuan

15/092007

Re: need help

Peter Weyzen14-Sep-07 19:24

Peter Weyzen

14-Sep-07 19:24

probably missing a closing '}' on a function. Look just above the first error.

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~<br />
Peter Weyzen<br />
Staff Engineer<br />
<A HREF="http://www.soonr.com">SoonR Inc -- PC Power delivered to your phone</A>

Re: need help

David Crow15-Sep-07 12:07

Re: opening word template(memo) and writting into it

15-Sep-07 12:07

li zhiyuan wrote:
how to resolve this issue?

By reading 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

led mike14-Sep-07 8:33

led mike

14-Sep-07 8:33

I suggest you read the first post in this forum titled "How to get an answer to your question".

Re: WinCE Text Display Question

Nathan Holt at EMOM14-Sep-07 10:14

Nathan Holt at EMOM

14-Sep-07 10:14

shpid3r wrote:
As for now, I have only discovered ExtTextOut(), to which I must provide x,y coordinates for starting to write at, and which doesn`t automatically add a scrollbar when reached the end of the screen.
So, did any of you find or know a better solution to this ?

It sounds like you should use a rich text control. If you are using MFC, you can use CRichEditCtrl.

Nathan

Main window

San246814-Sep-07 4:55

San2468

14-Sep-07 4:55

Hi,
If an application has more than one top level windows,
how can I determine which is the main window.

Thanks!

Re: Main window

Mark Salsbery14-Sep-07 6:57

Mark Salsbery

14-Sep-07 6:57

What defines the "main window"?

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

Re: Main window

led mike14-Sep-07 7:36

led mike

14-Sep-07 7:36

Today a fishing day for you? Big Grin | :-D

Re: Main window

Mark Salsbery14-Sep-07 7:41

Mark Salsbery

14-Sep-07 7:41

I hear the familiar cry heard on sportfishing boats...

"HOOK UP!!!"

Laugh | :laugh:

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

Conversion Problem

Andy20214-Sep-07 4:47

14-Sep-07 4:47

I receive a 20 word message and two words of this message define a floating value;

unsigned short message [20]; // Message buffer

e.g. message [2] and message[3] define a float with the mantissa in the lower byte of message[3].

Could I get the floating value by doing this:-

buffer[0] = message[2];
buffer[1] = message[3];
union
{
float data;
unsigned short buff[2];
}convert;

float val = convert.data;

Or what is the best way to get this 32 bit embedded floating point value.

Andy.

David Crow14-Sep-07 4:52

14-Sep-07 4:52

Andy202 wrote:
Could I get the floating value by doing this:-

Have you tried it to find out?

"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

Andy20214-Sep-07 5:05

14-Sep-07 5:05

Yes, get funny results

Sorry code error see corrected code below:-

union<br />
{<br />
float data;<br />
unsigned short buff[2];<br />
}convert;<br />
<br />
convert.buff[0] = message[2];<br />
convert.buff[1] = message[3];<br />
<br />
float val = convert.data;

David Crow14-Sep-07 5:31

14-Sep-07 5:31

Will two unsigned shorts hold both parts of a float? Since a float is four bytes, perhaps you should use four unsigned shorts.

"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

Andy20214-Sep-07 9:45

14-Sep-07 9:45

Thanks David. The code below seems to work OK.

But I am sure they must be a better way to get the result!

unsigned short w1 = 0xc3f5;    // The float is 3.14<br />
unsigned short w2 = 0x4840;<br />
union<br />
{<br />
	float data;<br />
	unsigned short buff[2];<br />
	BYTE floating[4];<br />
}convert;<br />
<br />
convert.floating[0] = (BYTE)(w1/256);		// This gives val = 3.1400001<br />
convert.floating[1] = (BYTE)(w1 & 0x00FF);<br />
convert.floating[2] = (BYTE)(w2/256);<br />
convert.floating[3] = (BYTE)(w2 & 0x00FF);<br />
<br />
//convert.buff[1] = w1;				// This gives val = -490.56445<br />
//convert.buff[0] = w2;<br />
<br />
float val = convert.data;

Russell^'14-Sep-07 7:20

Russell^'

14-Sep-07 7:20

Perhaps, it is possible, that you wrong the order of

convert.buff[0] = message[2];
convert.buff[1] = message[3];

it can be also

convert.buff[<code>1</code>] = message[2];
convert.buff[<code>0</code>] = message[3];

check this looking to the memory-watcher of VS during DEBUG.

(float usually are 4 bytes, unsigned short can be 2 bytes, elseway DavidCrow gave you a good tip)

Russell

Russell^'14-Sep-07 4:54

Russell^'

14-Sep-07 4:54

I like it

Russell

Nathan Holt at EMOM14-Sep-07 10:30

Nathan Holt at EMOM

14-Sep-07 10:30

Andy202 wrote:
I receive a 20 word message and two words of this message define a floating value;

unsigned short message [20]; // Message buffer

e.g. message [2] and message[3] define a float with the mantissa in the lower byte of message[3].

Could I get the floating value by doing this:-
union
{
  float data;
  unsigned short buff[2];
}convert;

convert.buff[0] = message[2];
convert.buff[1] = message[3];

float val = convert.data;
Or what is the best way to get this 32 bit embedded floating point value.

Andy

Something like that would work if you used the fixes I made in your quote. However, it would be easier to just use

float result = *(reinterpret_cast<float *>(message + 2);

Andy20214-Sep-07 11:24