First of all: Casting happens implicitly so you don't need to cast in this scenario.
Secondly: These types that you are specifying in non-standard types, so uint32_t could be defined as anything which will give you an incorrect result.
Thirdly: How to you check what the result is? Though debugging or though a print statement? The print statement could be wrong.
Fouth: Know your platform you writing the code for (its limitations and the standard it is using). Not necessarily that the pic32 uses the specific c standard which you are looking at.
"Program testing can be used to show the presence of bugs, but never to show their absence."
I put a TRACE macro inside of ON_UPDATE_COMMAND_UI handler, but strange, it doesn't call at all ... that is why the text is not changing ... this message (ON_UPDATE_COMMAND_UI) is not calling for menu items that has derived menu from itself ?
It is difficult to guess what may be happening in your code, but changing the text of a control should have no effect on the message passing and event handling for that control. I would try it myself but do not have MFC on my system.
have this code in secure shell
and I want to keep log of the users input
I fopen the file in the beginning
and fprinf on the data specific that needs to be written
then at end of file I fclose it
the problem is that its not writing the file
when I cat gamelog it just sends me to the next calling line
I'm new to programming and I cant grasp the concept of either one.
Then it is most unlikely that you are going to succeed in creating a battleship game. I suggest your time would be better spent finding some decent books/tutorials etc and working through them in order to build up a reasonable knowledge of the basics.
I refer you to my previous comment. There is very little loigical structure to your code, and some fairly basic and obvious mistakes. You should write an outline of your program requirements and try to think in terms of using function subroutines for specific tasks, rather than writing everything inline. Only when you have that structure should you start writing the actual code.
I have the basics of programming but no idea how to code nowadays. I would like to make an executable or service, or something that allows me to turn off the wireless connectivity if laptop is connected physically using the port. And if laptop gets unplugged from the physical lan, then the wireless nic becomes active until connects to a wifi network. In other words, would like to make something like a connection switcher. Have no idea, where to start.
I'm not sure if I can ask this here because it is for an open source library called Podofo. I'm asked this on their mailing lists but it could be some time before someone responds. If this is the wrong place to ask this question then please let me know and I'll just remove it. I was hoping that maybe someone else out there uses this library and has some experience in dealing with this problem.
The function PdfFontMetrics::GetGlyphID should return the Glyph ID for a given character represented by it's unicode codepoint (as a long).
To make things easier I have written a small program greatly simplifying and hopefully clarifying my problem. I hope I haven't over simplified things but the PdfFontMetrics object seems to work in some case but not when looking for the Glyph ID. This is a small command line program. For now, it's whole purpose is to find the Glyph ID for each character handed to the GetGlyphID function. There are some other output messages in there to prove that the PdfFont has been loaded.
This library uses Freetype2 as a dependency and when using the GetGlyphID function it eventually calls the FT_Get_Char_Index( FontFace(this is preloaded), Unicode(unicode value codepoint) ) which is a Freetype function as part of it's API. One of the fonts, represented as Font Name: LNCKCK+TimesNewRomanPSMT represents the one of the preloaded font names my program searches for when seeking the Glyph ID. I'm assuming that this isn't found because the GetGlyphID function is telling me that it can't find the Glyph ID by returning Zero. It is highly likely that there is some problem with the font name and thus the glyph search ends early.
Here's the code. Please see the comments below where I have extracted the TJ array and attempt to find the Glyph ID for individual characters. The line commented with
"// NOW ATTEMPT TO EXTRACT GLYPH INFORMATION" is where I try to get the Glyph ID. I just can't see where I'm going wrong. Can anyone help? Thanks
using namespace PoDoFo;
using namespace std;
const char* token;
const PdfFontMetrics *met;
PdfArray pArray; // for extracting text under TJ operator
//THE PURPOSE OF THIS SMALL PROGRAM IS TO SHOW HOW I AM EXTRACTING THE GLYPH ID.
int main(int argc, char **argv)
page_count = doc.GetPageCount();
for(int i = 0; i < page_count;i++)
page = doc.GetPage(i);
PdfContentsTokenizer tokenizer(page); // tokenize page
keyword = token;
if(keyword == "Tf")
PdfStack.pop(); //pop the font size off the stack.
PdfName name_of_font = PdfStack.top().GetName();
PdfObject *ofont = page->GetFromResources(PdfName("Font"),name_of_font);
Font = doc.GetFont(ofont);
met = Font->GetFontMetrics(); // get the font metrics for current font.
//met is global.
if(keyword == "TJ")
pArray = PdfStack.top().GetArray();
size_of_array = pArray.GetSize();
for(int x = 0; x < size_of_array; x++)
TJ_string = pArray[x].GetString().GetString();
// Now to test the font metrics.
for (int s = 0; s < TJ_string.length(); s++)
unsigned char individual_character = TJ_string[s];
//THE BELOW CALL TO CURRENT FONT DATA WORKS FINE
cout << "Font Size is: " << met->GetFontSize() << endl;
cout << "Character Width is: " << met->CharWidth(individual_character) << endl;
// NOW ATTEMPT TO EXTRACT GLYPH INFORMATION
GlyphID = met->GetGlyphId((long)individual_character);
cout << "************************* THE GLYPH ID IS: " << GlyphID << endl;
cout << "The Error is: " << err.what() << endl;