C / C++ / MFC

Re: saving 12 bits images

12-Jan-09 23:14

alfalf3 wrote:
Have you experience the same problem?

No.

alfalf3 wrote:
any idea on how to do so?

Yes: write a couple of functions, for instance:

BOOL SaveBmpTo12BitsFile(HBITMAP hBmp, HANDLE hFile);
HBITMAP LoadBmpFrom12BitsFile(HANDLE hFile);

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]

«_Superman_»12-Jan-09 23:35

Re: saving 12 bits images

12-Jan-09 23:35

You can use the below code to convert 2 unsigned shorts (4 bytes) into 3 bytes.

// Encoding

unsigned short s1 = 10;
unsigned short s2 = 20;

BYTE b1 = (s1 & 0x0FF0) >> 4;

BYTE b2 = (s1 & 0x000F) << 4;
b2 |= (s2 & 0x0F00) >> 8;

BYTE b3 = s2 & 0x00FF;

// Decoding

s1 = b1 << 4;
s1 |= (b2 & 0xF0) >> 4;

s2 = (b2 & 0x0F) << 8;
s2 |= b3;

«_Superman_»

alfalf313-Jan-09 4:15

alfalf3

13-Jan-09 4:15

Thank you _Superman_ (sounds weird Smile | :)

)
I found a way (not the smartest I think) without bit shift:

typedef struct _PackedUShort
{
 unsigned char b0 : 4;
 unsigned char b1 : 4;
 unsigned char b2 : 4;
 unsigned char b3 : 4;
} PackedUShort;

typedef union 
{
 unsigned short us;
 PackedUShort pack;
} PackedData;

packBuf = (PackedData*) myImageBuffer;

// allocate new buffer
resultBuf = (PackedData*) malloc(sizeof(PackedData) * newSize);

for(i=0; i<imagesize;>{
  int position = j % 4;

  switch(position) 
  {
    case 0:
	(*resultBuf).pack.b0 = (*packBuf).pack.b0;
	(*resultBuf).pack.b1 = (*packBuf).pack.b1;
	(*resultBuf).pack.b2 = (*packBuf).pack.b2;
	break;
    case 1:
	(*resultBuf).pack.b1 = (*packBuf).pack.b0;
	(*resultBuf).pack.b2 = (*packBuf).pack.b1;
	(*resultBuf).pack.b3 = (*packBuf).pack.b2;
	resultBuf++;
	break;
    case 2:
	(*resultBuf).pack.b2 = (*packBuf).pack.b0;
	(*resultBuf).pack.b3 = (*packBuf).pack.b1;
	resultBuf++;
	(*resultBuf).pack.b0 = (*packBuf).pack.b2;
	break;
    case 3:
	(*resultBuf).pack.b3 = (*packBuf).pack.b0;
	resultBuf++;
	(*resultBuf).pack.b0 = (*packBuf).pack.b1;
	(*resultBuf).pack.b1 = (*packBuf).pack.b2;
	break;
    }
    j+=3;
    packBuf++;
  }
}

----------------------

Multi language support in MBCS application

Varghese Paul M12-Jan-09 21:06

Varghese Paul M

12-Jan-09 21:06

Hi Friends,

I have a dialog based MBCS application which creates the EDIT control over the dialog using CreateWindowExW API to support languages like Chinese, Japanese etc.
When I paste the Chinese characters into the EDIT control, it displays it correctly.
I call the GetWindowTextW to extract the content from the control into a wchar_t buffer.
But the debugger is not showing the value unless I call CharToOemW. What CharToOem does on that buffer? I would like to know more details with a functional comparison of APIs, WideCharToMultiByte and CharToOem.

Thank you

cheers
Varghese Paul

Re: Multi language support in MBCS application

Jijo.Raj12-Jan-09 21:55

Jijo.Raj

12-Jan-09 21:55

Please check whether you have enabled - "Display Unicode strings" option under Tools > Options > Debug tab.

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

Re: Multi language support in MBCS application

«_Superman_»12-Jan-09 23:21

Re: Multi language support in MBCS application

12-Jan-09 23:21

All multi-byte functions work on char buffers and not on wchar_t buffers.

«_Superman_»

Randor 13-Jan-09 0:08

Randor

13-Jan-09 0:08

Varghese Paul M wrote:
But the debugger is not showing the value unless I call CharToOemW. What CharToOem does on that buffer?

I think that the CharToOEM function is converting the string buffer from UTF-8 into the default codepage on your operating system.

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Best Wishes,
-David Delaune

BackGround color of Status Bar

karhong12-Jan-09 19:27

karhong

12-Jan-09 19:27

Hi, I'm able to set the text and the background color of the text for Status bar, but I'm not able to set the color for the 'seperator' of the status bar.
I have 3 column on the status bar, each of the text and background I'm able to set it but have no luck on the 'seperator'
I've done it by creating a custom status bar inherited from CStatusBar
By drawing it on DrawItem

CODE:

CDC oDC;

CDC* pdc = CDC::FromHandle(pDIS->hDC);
pdc->FillSolidRect(&pDIS->rcItem, RGB(255,255,255));

oDC.Attach(pDIS->hDC);
oDC.SetTextColor(RGB(255,0,0));
oDC.SetBkColor(pDIS->itemData);
pDIS->rcItem.left += 2;
oDC.DrawText(_T("Test"),&pDIS->rcItem,DT_LEFT);
oDC.Detach();

Any ways to do this?

I wanted to change the whole status bar into white color RGB(255,255,255)
Any help would be appreciated.

KH

good

Re: BackGround color of Status Bar [modified]

karhong12-Jan-09 20:53

karhong

12-Jan-09 20:53

Is there any ways for me to set the seperator on the status bar become smaller?? by default, the width of it is 0.1cm

Or can I disable/remove the seperator between the item in the status bar ??

good

modified on Tuesday, January 13, 2009 3:03 AM

Re: BackGround color of Status Bar

«_Superman_»12-Jan-09 23:11

Re: BackGround color of Status Bar

12-Jan-09 23:11

Did you try to handle the WM_CTLCOLOR to change the status bar color?

«_Superman_»

karhong13-Jan-09 14:13

karhong

13-Jan-09 14:13

Do i Change the WM_CTLCOLOR on my CCustomStatusBar or on the MainFrm ?

KH

good

Which one more efficient?

Le@rner12-Jan-09 19:12

Le@rner

12-Jan-09 19:12

Hi all,

in VC++ by default the charcter set property for project is Use Unicode Character Set.

i want to knoe that which one is more efficient between Use Unicode Character Set and Use Multi-Byte Character Set for SDI type application.

Thanks in advance.

IN A DAY, WHEN YOU DON'T COME ACROSS ANY PROBLEMS - YOU CAN BE SURE THAT YOU ARE TRAVELLING IN A WRONG PATH

ThatsAlok12-Jan-09 19:40

ThatsAlok

12-Jan-09 19:40

totally depends upon your requirement,if application need international character support, it need to be unicode aware.You don't have any choice.

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow
Never mind - my own stupidity is the source of every "problem" - Mixture

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

ThatsAlok12-Jan-09 19:42

ThatsAlok

12-Jan-09 19:42

apology for my previous comment, both support International characted. But it totally depend on choice.
MBCS and Unicode[^]

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

CPallini12-Jan-09 20:52

12-Jan-09 20:52

UNICODE.

ThatsAlok12-Jan-09 23:09

ThatsAlok

12-Jan-09 23:09

CPallini wrote:
UNICODE.

good 5 point for

cheers,
Alok Gupta
VC Forum Q&A :- I/IV
Support CRY- Child Relief and You

CPallini12-Jan-09 23:19

12-Jan-09 23:19

Thanks.

SandipG 12-Jan-09 23:56

SandipG

12-Jan-09 23:56

I guess you didn't notice Iain's Post[^]...
Big Grin | :-D

Regards,
Sandip.

CPallini13-Jan-09 0:09

13-Jan-09 0:09

You guessed right, I missed it...Ooops, wait a minute, I never miss anything! I'm a god, after all!
Laugh | :laugh:

Jijo.Raj12-Jan-09 23:19

Jijo.Raj

12-Jan-09 23:19

ThatsAlok upport CRY- Child Relief and You

Hi Alok,

So happy to see another CRY Supporter!

Regards,
Jijo.

_____________________________________________________

http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

«_Superman_»12-Jan-09 22:54