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The reason you generally want to and with 0xff is to ensure that when your byte is promoted to int (as it will be internally in the expression), it is zero-extended, i.e. the top 24 bits of the int are set to zero, not one. Why would they be set to one? Basically if the language sign-extends the byte when it makes it an int AND the top bit of the byte is set.
Now, if you use 'unsigned char' for BYTE and 'unsigned int', you should be OK. If you used 'signed char' for BYTE, then you could have issues.
Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p
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Yes, that´s it. Thank´s a lot. Just found out that it was a signed/unsigned issue. Didn´t know, though, why java would make a difference between
int time = data[3];
result is -16
and
int time = data[3] & 0xff;
result is 240
(data[3] being a byte holding 11110000)
So thanks again. I love this forum  .
Souldrift
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i want to minimize the application Mainframe window, and want to show the other dialogs which are opened from the application?
from following code it is minimizing everything
AfxGetMainWnd()->ShowWindow(SW_MINIMIZE);
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you can hide and show it with
SW_HIDE and
SW_SHOW
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I tried, it is hiding everything
Dialog is modeles dialog
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You're attempting to make a modeless dialog behave like a modal dialog. Why not just use a modal dialog instead?!
It is a crappy thing, but it's life -^ Carlo Pallini
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Why do you have to minimize the mainframe window? If you want the newly opened dialog to have focus until it is dismissed, then just use a modal dialog. See CDialog::DoModal()[^]
It is a crappy thing, but it's life -^ Carlo Pallini
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The dialog should be visible thru entire application and should not minimize at any time.
Dialog should not be modal why because my control should not restrict to dialog. Dialog should be accessible and my mainframe views should be accessible, based on the control from the dialog mainframe views will replaced with the reqd content.
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do u want only minimize your document?
user can restore it?
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sdi mainframe windows splitter into 2 rows and 2nd row into two columns, where views will replaced based on the selection of the controls in the dialog
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HBITMAP hBitmap = 0;
hBitmap = (HBITMAP)LoadImage( NULL,
pDoc->cInfo.strContractBrand,
IMAGE_BITMAP,
0,
0,
LR_LOADFROMFILE | LR_DEFAULTSIZE);
CBitmap Bitmap;
Bitmap.Attach( hBitmap );
BITMAP BitmapInfo = { 0 };
Bitmap.GetBitmap( &BitmapInfo );
DWORD BitmapImageSize = BitmapInfo.bmHeight *
BitmapInfo.bmWidth *
( BitmapInfo.bmBitsPixel / 8 );
BYTE* pBitmapData = new BYTE[ BitmapImageSize ];
ZeroMemory( pBitmapData, BitmapImageSize );
Bitmap.SetBitmapBits(BitmapImageSize, pBitmapData);
Bitmap.SetBitmapBits( BitmapImageSize, pBitmapData );
pDC->SelectObject(&Bitmap);
pDC->BitBlt(1280, -1765, 390, -230, pDC,
0, 0, SRCCOPY);
delete pBitmapData;
pBitmapData = 0;
purpose:
i want to load a bitmap from file and insert in document. the file location is in C..Doc and PDoc is pointer to its document.
MapMode is MM_LOMETRIC.
problem:
it dosen't show anything. 
i don't see anything in desired coordinate and print blank page.
notice:
i find these codes in web and didn't work with CBitmap class.
even didn't use bitmap in my programs.
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Your question is very unclear. What is this document you are talking about ? The document class from an SDI app ? If yes, a document class is not something visible, it is supposed to be data only. Are you talking about the view ?
Furthermore, what is this pDC you are using in your code snippet ? Where did you put this code ?
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sry forget it the code is in C..View and pdc defined there.
program is SDI
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Amin.Abdi wrote: pDC->BitBlt(1280, -1765, 390, -230, pDC, // pDC : a CDC pointer to document (SDI Program)
0, 0, SRCCOPY);
What is the purpose of bit-blitting from pDC to pDC itself?
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]
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dcMem.SelectObject(&Bitmap);
pDC->BitBlt(1280, nYposChange-1765, 390, -230, &dcMem, 0, 0, SRCCOPY);
fixed but still nothing 
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What's the purtpose of a negative height?
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]
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because of MapMode
modified on Wednesday, August 26, 2009 4:45 AM
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And why do you need the following statements?
Amin.Abdi wrote: BYTE* pBitmapData = new BYTE[ BitmapImageSize ];
ZeroMemory( pBitmapData, BitmapImageSize );
Bitmap.SetBitmapBits(BitmapImageSize, pBitmapData);
Bitmap.SetBitmapBits( BitmapImageSize, pBitmapData );
The last line is because you don't trust MFC? 
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]
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I change my codes :
remove that statement and add these:
CClientDC dcMem;
dcMem.SelectObject(&Bitmap);
pDC->BitBlt(1280, nYposChange-1995, 390, 230, &dcMem, 0, 0, SRCCOPY);
but it show a print screen of window and print nothing. WHY and how can i fix it?
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You should put your drawing code inside the CView::OnDraw method.
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]
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i put it on a function and call the function in C..View::OnDraw.
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I would do this test:
CDC memDC;
memDC.CreateCompatibleDC(pDC);
dcMem.SelectObject(&Bitmap);
pDC->BitBlt(0, 0, 390, 230, &dcMem, 0, 0, SRCCOPY);
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]
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THANX
![Rose | [Rose]](https://www.codeproject.com/script/Forums/Images/rose.gif)
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You are welcome.
As about negative height, when you should make something work, I suggest the 'stay simple' principle: start trying with 'fail-proof' parameters and then, when it works a bit, began to change..
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]
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Hi,
I have today date, how can I get the date of 15,30,45 days back?
My code is to get today date and time:
CTime newtime=CTime::GetCurrentTime();
struct tm temp;
newtime.GetLocalTm(&temp);
WCHAR szStr[20];
wsprintfW(szStr,_wasctime(&temp));
AfxMessageBox(szStr);
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