C / C++ / MFC

How to implement DirListBox and DriveListBox in Visual C++ ?

2-Nov-04 20:19

If you use MFC CString, you can use CString::Replace().

e.g.
CString strValue("First/Last");
strValue.Replace("/", "\\"); //this will replace "/" with single backslash "\"

Hope this is help Smile | :)

Cheers...

vhmau2-Nov-04 19:43

vhmau

2-Nov-04 19:43

Hi all,
I need a dirlistbox and a drivelistbox in visual c++ dialog or some thing like that, so that user can show a dialog box and chose a directory path from my dialog.
Tell me what to do ?
thanks in advance.

Re: How to implement DirListBox and DriveListBox in Visual C++ ?

vcplusplus3-Nov-04 0:27

vcplusplus

3-Nov-04 0:27

The following code will enumerate all the files in the current directory.

CFileFind finder;
BOOL bWorking = finder.FindFile("*.*");
while (bWorking)
{
   bWorking = finder.FindNextFile();
   myListBox.AddString(finder.GetFileName())
}

Use the method CListBox::Dir

Re: How to implement DirListBox and DriveListBox in Visual C++ ?

David Crow3-Nov-04 3:35

David Crow

3-Nov-04 3:35

Wouldn't using SHBrowseForFolder() be easier?

"Opinions are neither right nor wrong. I cannot change your opinion of me. I can, however, change what influences your opinion." - David Crow

Urgent help, please... "error C2668: 'log' : ambiguous call to overloaded function"

2-Nov-04 19:14

I write a program that call more than 1 log function and it give me this error message
"error C2668: 'log' : ambiguous call to overloaded function"

What can I do to resolve this problem?? Confused | :confused:

Thanks in advance.

Best regards,
Pop

Re: Urgent help, please... "error C2668: 'log' : ambiguous call to overloaded function"

Christian Graus2-Nov-04 19:37

Christian Graus

2-Nov-04 19:37

Cast the parameters so they exactly match one of the function definitions.

Christian

I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer

Embedding Font to PDF

RYU^^2-Nov-04 18:56

2-Nov-04 18:56

Hi there,

I am creating a program that allows me to create the PDF file without using the Distiller. I am stuck in embedding the font. I have tried to use CDC::GetFontData() to read the font data. But still doesn't work.

From PDF documentation, I must include the following tables:
- head - hhea
- loca - maxp
- cvt_ - prep
- glyf - hmtx
- fpgm - cmap

Currently, I used GetFontData() to get the font data and write the BYTE into the file.

Below is the function that I wrote to get the font data:
BYTE * GetFontDataByte(const CDC *pDC, DWORD dwTableName, DWORD & dwSize)
{
dwSize = pDC->GetFontData(dwTableName, 0, 0, 0); //get the buffer size
if(dwSize == -1) return NULL;

BYTE *lpData = new BYTE[dwSize];
if(pDC->GetFontData(dwTableName, 0, lpData, dwSize) == -1) //get the actual font data
{
dwSize = -1;
delete [] lpData;
return NULL;
}

return lpData;
}

Please note: the *pDC contains the selected font. (e.g. pDC->SelectObject(selectedFont);)

Once I got that byte (byte data), I write that byte into PDF Stream. The problem is that everytime I open the PDF file that I created (with embedded font), it always display "Unable to extract the embedded font ..." error message.

Can anyone please help me? I am pretty new with all of this stuff.

Thank you very much in advance.

Ryu Thomas

Please help me...

RYU^^3-Nov-04 11:54

Re: Embedding Font to PDF

3-Nov-04 11:54

Hi to all MASTERs,

Can you please help me out with this problem? I have tried to find the answer through the Internet for past 4 weeks. I am very desperately needed the answer ASAP.

Please help me...

RYU^^18-Nov-04 18:16

Convert a string to DWORD

18-Nov-04 18:16

Do not worry about it anymore. I have solved the problem.

Samin Thomas

Regarding grid

balajeedurai2-Nov-04 18:24

balajeedurai

2-Nov-04 18:24

Hai Frens. . .

I need a help...In my application i have to provide a miltiple selection of rows in grid while the Ctrl key is kept pressed. How do i do this.
Can any one guide me. . .

Thanx

Re: Regarding grid

Christian Graus2-Nov-04 19:38

Christian Graus

2-Nov-04 19:38

what grid ?

Christian

I have several lifelong friends that are New Yorkers but I have always gravitated toward the weirdo's. - Richard Stringer

Re: Regarding grid

balajeedurai2-Nov-04 21:15

balajeedurai

2-Nov-04 21:15

Microsoft Flex grid . . .
Can U guide me please

Thanx

Iceberg762-Nov-04 18:02

2-Nov-04 18:02

Hello,

I am pretty new to Win32 programming. How do I convert a string to a DWORD?
For example, I want to convert this value:

char *String = "WS_MAXIMIZE";

into a DWORD value. After the conversion, the String should be equal to WindowStyle ( see below )

char *String = "WS_MAXIMIZE";
DWORD WindowStyle = WS_MAXIMIZE;

Here are the correct numeric values:
String = 0x0046c104
WindowStyle = 16777216

I tried type casting:
char *String = "WS_MAXIMIZE";
DWORD WindowStyle = (DWORD)String;
But that made WindowStyle = 9093936 and that's not what I want.

Please tell me how to convert a string (hexadecimal) to a double word.

Thank You.

shiraztk2-Nov-04 18:28

shiraztk

2-Nov-04 18:28

Hi
atol converts a string to a double.

char *String="16777216";
DWORD num=atol(String);

I dont think you will be able to convert "WS_MAXIMIZE" to the appropriate number anyway. WS_MAXIMIZE is a macro and macros within "" are not replaced.

Regards

The Best Relligion is Science.
Once you understand it, you will know God.

Rage2-Nov-04 20:25

Rage

2-Nov-04 20:25

What are you trying to achieve ? I can't see any point in

Iceberg76 wrote:
char *String = "WS_MAXIMIZE";

Are you storing some data in a CListCtrl or TreeCtrl ? Or playing with the registry ?

~RaGE();

Alexander ^M.,3-Nov-04 6:20

Alexander ^M.,

3-Nov-04 6:20

WM_MAXIMIZE is a MACRO!!!! Only the compiler can convert it to the number it stands for. Convert a string run-time to the value the software has to know the value.

you could build an array to map these macro strings to their appropriate number.

Don't try it, just do it! Wink | ;-)

Iceberg763-Nov-04 7:52

3-Nov-04 7:52

Well I have a configuration text file that I read in when the app starts. I am using it so I can make easy changes without recompiling and to give to other developers so they can configure the display the way they want to...

So I guess that's what I have to do since they are macros, huh? I'll just read the strings and compare them to an array of known macros and if they are the same I will set them accordingly.

Any other suggestions or ideas will be appreciated.

Thanks

Iceberg763-Nov-04 18:12

3-Nov-04 18:12

Despite the fact that WM_MAXIMIZE is a macro...

If I set:
DWORD test = 30343168;

then the numerical value works the same with CreateWindow() as when I use:
test = WS_MAXIMIZE|WS_OVERLAPPEDWINDOW;

Is there no way to compute this numerical value without a compiler?

Is this hex converted to binary then to numeric form?

ThatsAlok3-Nov-04 17:30

ThatsAlok

3-Nov-04 17:30

Hi Buddie,
I think you have to go for Comparison for performing above task.

like this way <br />
     char *String = "WS_MAXIMIZE";<br />
     DWORD WindowStyle;<br />
<br />
   if(strcmp(String ,"WS_MAXIMIZE")==0)<br />
        WindowStyle = WS_MAXIMIZE;

May be that would be right approach for solving this tyoe of problem.

-----------------------------
"I Think It Will Help"
-----------------------------
Alok Gupta
visit me at http://www.thisisalok.tk

Iceberg763-Nov-04 17:46

3-Nov-04 17:46

Thank You!