C / C++ / MFC

vikramaditya234 wrote:

I have to convert signed char and signed char* to unsigned char and unsigned char* respectively.

signed char SignedChar = 'A'; // signed keyword can be skipped!
unsigned char UnsignedChar = (unsigned char)SignedChar;

signed char* pSignedChars = "ABCDEDF"; // signed keyword can be skipped!
unsigned char* pUnsignedChars = (unsigned char*)pSignedChars;

vikramaditya234 wrote:

I have read that using (unsigned char) is not very safe and can cause.

vikramaditya234 wrote:

i cant afford to use the type cast

vikramaditya234 wrote:

i cant afford to use the type cast. please suggest me something else

char C = '-';
unsigned char U = C;

char *c = new char;
*c = 'a';
unsigned char *u = new unsigned char;
*u = *c;

Rajesh R Subramanian wrote:

You're right, there is no need to cast stuff here as they basically are just different representation of the same data.

Cedric Moonen wrote:

For the second case (pointers), you'll get an error because type pointed are unrelated.

vikramaditya234 wrote:

I am working in complete 'C' environment on UNIX.

Usef Marzbani wrote:

Where have I done a wrong?

Mark Salsbery wrote:

Also note in the documentation

LONG style=::GetWindowLong(m_edit.m_hWnd,GWL_STYLE);
style &= (~(ES_RIGHT|ES_CENTER|ES_LEFT)); 
style |= ES_LEFT;
::SetWindowLong(m_edit.m_hWnd,GWL_STYLE,style);
::SetWindowPos(m_edit.m_hWnd, NULL,0,0,0,0,SWP_NOMOVE|
				SWP_NOOWNERZORDER|SWP_NOSIZE);

m_edit.Invalidate();

m_edit.ModifyStyle(ES_RIGHT|ES_CENTER|ES_LEFT,ES_LEFT);
m_edit.Invalidate();