C / C++ / MFC Discussion Boards

Vancouver27-Dec-07 8:49

27-Dec-07 8:49

How can I get the paths of the directories from which the application has been loaded, and the "current" directory (the one, which is specified in the "Start in" of the properties)?

Re: Directories of the current process

peterchen27-Dec-07 8:56

peterchen

27-Dec-07 8:56

GetModuleFileName(NULL, buffer, buffersize)
and
GetCurrentDirectory(...)

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Re: Directories of the current process

Vancouver27-Dec-07 10:00

Vancouver

27-Dec-07 10:00

Thanks, it was very quick.

Picture control

Hakan Bulut27-Dec-07 8:45

Hakan Bulut

27-Dec-07 8:45

I has already been tried to this codes.. It does not work. Anybody can help me about picture control usage to review a picture.

HBITMAP hBmp = (HBITMAP)::LoadImage(AfxGetInstanceHandle(), <br />
			MAKEINTRESOURCE(IDB_BITMAP2),<br />
			IMAGE_BITMAP, <br />
			0,0, <br />
			LR_LOADMAP3DCOLORS);<br />
 <br />
CStatic* pSt = (CStatic*) GetDlgItem(IDC_STATIC);<br />
pSt->SetBitmap(hBmp);<br />
pSt->UpdateWindow();<br />
pSt->InvalidateRect(NULL);

Was is das¿

Re: Picture control

peterchen27-Dec-07 8:54

peterchen

27-Dec-07 8:54

(1) are the style correct? IIRC, you need to set the SS_BITMAP style for the static.
(2) UpdateWindow and IncvalidateRect aren't necessary here (unless you don't exit the message handler where you have this for quite a while, which is a bad idea)
(3) If you would need them, they are in the wrong order Smile | :)

(4) Test your program with different DLU to pixel conversions (i.e. with different dialog fonts)
(5) My first CP article[^] handles the extras that oyu might need to make the bitmap look good.

Re: Picture control

Hakan Bulut27-Dec-07 9:06

Hakan Bulut

27-Dec-07 9:06

Thanks friend.. Your article will be helpful.

Was is das¿

Re: Picture control

Hamid_RT28-Dec-07 4:59

Hamid_RT

28-Dec-07 4:59

You can also use of CBitmap::Load if you are using of resource.

Re: Picture control

Hakan Bulut28-Dec-07 5:58

Hakan Bulut

28-Dec-07 5:58

How is the usage of CBitmap class to load a saved bitmap in the resourceID. Request from you so Hamid.

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Re: Picture control

Hamid_RT30-Dec-07 7:15

Hamid_RT

30-Dec-07 7:15

CBitmap has a function its name is Load you can use of it for load bitmaps if you need to more explain you can reply to me. Wink | ;)

Re: Picture control

Hakan Bulut30-Dec-07 23:30

Hakan Bulut

30-Dec-07 23:30

Please help with some type the sample code.

modified 13-Mar-13 6:08am.

Re: Picture control

Hamid_RT31-Dec-07 19:34

Hamid_RT

31-Dec-07 19:34

CBitmap m_bmp;
m_bmp.LoadBitmapW(IDB_BITMAP);

you must declare variable out of function if you want to use of it on the other functions and when you want to close your program you must release memory with m_bmp.DeleteObject();.

Retrieve Width and Height of a .PNG file

Hanan88827-Dec-07 7:17

Hanan888

27-Dec-07 7:17

I'm creating a slot machine game using directX.

I couldn't find how to get the dimensions (width,height) of a .PNG file.

Re: Retrieve Width and Height of a .PNG file

Mark Salsbery27-Dec-07 8:28

Mark Salsbery

27-Dec-07 8:28

If you're loading the png image, then whatever you're
using to load it should be able to give you that info.

Check out the shared CImage class and the GDI+ Image and Bitmap
classes for a couple ways to load images.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Thanks

Hanan88829-Dec-07 23:17

Hanan888

29-Dec-07 23:17

Thank you very much Mark,

CImage solved my problem (using load() on the filename, then GetWidth()).

Do you think using this (only about 10 times during the init stage of my application)
can create any significant overhead ?

However, I wasn't able to find how to retrieve that info from D3DXCreateTextureFromFile, which is what I actually use to load the image resource (to draw textures using sprites in DirectX).

Re: Thanks

Mark Salsbery30-Dec-07 10:39

Mark Salsbery

30-Dec-07 10:39

Hanan888 wrote:
Do you think using this (only about 10 times during the init stage of my application)
can create any significant overhead ?

It's less efficient than just parsing the file for the info since the
entire image is loaded into memory. If you're going to use the
loaded image anyway then it doesn't matter - loading once at the beginning is
way better than reloading every time you need them.

Hanan888 wrote:
I wasn't able to find how to retrieve that info from D3DXCreateTextureFromFile

I believe IDirect3DTexture9::GetLevelDesc() should give you this info.

Mark

Mark Salsbery
Microsoft MVP - Visual C++
Java | [Coffee]

Re: Thanks

Hanan88830-Dec-07 22:43

Hanan888

30-Dec-07 22:43

IDirect3DTexture9::GetLevelDesc() gives you description of the levels of the texture. I haven't dive into it - but know that the picture get auto-scaled to a power of 2 dimension, for example:
(60 X 36) --> (64X64)

GetLevelDesc() helps ya get the 64x64 info.

I finally scaled currectly but it doesn't look as good as the original plus I'm concerned if sprites&textures are really the way.

happy new year Smile | :)

and thanks again

Linker troubles

Dee Olutayo27-Dec-07 7:00

Dee Olutayo

27-Dec-07 7:00

I'm trying to use the handy RemoteLib found on this site, but I cannot even get my linker to work right. I have added the .lib to my Project, as well as the folders containing the lib/headers to my linker/additional folder settings (at least i think i got the steps here right....). I #include'ed "RemoteLib.h" . I am using VC8 (visual studio 2005).

When I compile the RemoteLib example project I get (and similar in my own):
Linking...
DemoDlg.obj : error LNK2019: unresolved external symbol "struct
HINSTANCE__ * __cdecl RemoteGetModuleHandleNTW(unsigned long,wchar_t
const *)" (?RemoteGetModuleHandleNTW@@YAPAUHINSTANCE__@@KPB_W@Z)
referenced in function "protected: void __thiscall
CDemoDlg::OnCall(void)" (?OnCall@CDemoDlg@@IAEXXZ)
DemoDlg.obj : error LNK2019: unresolved external symbol "struct
HINSTANCE__ * __cdecl RemoteLoadLibraryNTW(unsigned long,wchar_t const
*)" (?RemoteLoadLibraryNTW@@YAPAUHINSTANCE__@@KPB_W@Z) referenced in
function "protected: void __thiscall CDemoDlg::OnCall(void)"
(?OnCall@CDemoDlg@@IAEXXZ)

RemoteLib: http://www.codeproject.com/dll/RemoteLib.asp?df=100&forumid=141663&exp=0&select=1008934&tid=1008934

Any suggestions would be appreciated

Re: Linker troubles

CPallini27-Dec-07 7:36

CPallini

27-Dec-07 7:36

Have you added RemoteLib.lib to the Linker command line?

BTW Have you asked your son a bit turn on international politics (just kidding Big Grin | :-D

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-- Alfonso the Wise, 13th Century King of Castile.

[my articles]

Re: Linker troubles

Dee Olutayo27-Dec-07 12:42

Dee Olutayo

27-Dec-07 12:42

My command line looks like this

/OUT:"E:\code\sandapp\Debug\sandapp.exe" /INCREMENTAL /NOLOGO /LIBPATH:"E:\code\RemoteLib\RemoteLib_Bin" /MANIFEST /MANIFESTFILE:"Debug\sandapp.exe.intermediate.manifest" /DEBUG /PDB:"e:\code\sandapp\debug\sandapp.pdb" /SUBSYSTEM:WINDOWS /ENTRY:"wWinMainCRTStartup" /MACHINE:X86 /ERRORREPORT:PROMPT RemoteLIb.lib boost_regex_vc7_mss.lib

Retrive JavaScript data from C++

theallmightycpd27-Dec-07 5:26

theallmightycpd

27-Dec-07 5:26

Good day,

I'm having a little trouble and I'm not even sure if this can be done.

I am writing a program that calls an HTTP address in order to generate a javascript object that then needs to be read. The Web address generates a file that looks like this:

obj = new Object();
obj.var1='abc';
obj.var2='def';
obj.var3='geh';
obj.var4='ijk';

Currently, I am just calling that page and reading it in as a text stream. Doing it this way, I'm going to have to parse through the string and separate all the values manually.

Code is as follows:

static const char s_szAgent[] = "";

CString str;
CString strURL = "http://mysite.com/js.go?var=test";

try
{
CInternetSession objSession(s_szAgent);
CHttpFile* pFile = (CHttpFile*)objSession.OpenURL(strURL, 1,INTERNET_FLAG_TRANSFER_ASCII | INTERNET_FLAG_RELOAD | INTERNET_FLAG_DONT_CACHE);

// If open succeeded, read the file.
if (pFile)
{
CString strLine;
while (pFile->ReadString(strLine))
{
str+=strLine.Trim();
str+="\n";
}
pFile->Close();
delete pFile;
}
}
catch (CInternetException* pEx)
{
pEx->ReportError();
pEx->Delete();
}

Now my question is:
Is there a simpler way of doing this? Is there a way to just access that javascript object as a whole rather than just reading in a file string by string?

Re: Retrive JavaScript data from C++

Hakan Bulut28-Dec-07 7:25

Hakan Bulut

28-Dec-07 7:25

I guessing that, you talk about the ActiveX control usage. I have to been tried to ActiveX control to solve of the problem but I had no time to compile these codes:

 <br />
CString strResult;<br />
m_strResult = strResult;<br />
// TODO: Add your property handler here<br />
TCHAR* ch = strResult.GetBuffer(strResult.GetLenght());<br />
CStdioFile sf(("HTML1.html", CFile::ModeRead());<br />
while(sf.ReadString("strResulte"))<br />
{ <br />
	sprintf(string, "strResulte"); 	/* Read and write data object. */<br />
}<br />
CHttpFile* pFile;<br />
pFile->GetFileURL("c:\\Project\solution\res\html1.html");<br />
pFile->Open("\\res\html1.html", INTERNET_FLAG_RELOAD | INTERNET_FLAG_TRANSFER_ASCII , NULL);<br />
pFile->ReadString("strResulte"); /* "strResulte" is my JS data object to" */<br />
pFile->GetObject(&strResult);<br />
pFile->classCStdioFile.CreateObject(&sf);<br />
pFile->classCFile.IsDerivedFrom(CHTMLView*);	<br />
strResult.ReleaseBuffer();

Please, let me know if this idea can be helper.

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put try...catch... in a loop

followait27-Dec-07 4:03

followait

27-Dec-07 4:03

for (int i=0;i<largenum;++i) {<br="" mode="hold" />  try {} catch {}
}

Will the try...catch... hit the performance dramatically?

Re: put try...catch... in a loop

CPallini27-Dec-07 4:19

CPallini

27-Dec-07 4:19

I think you have to reformat your OP.
Use the escape sequence for the < operator (i.e. <).
Smile | :)

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.

[my articles]

Re: put try...catch... in a loop

David Crow27-Dec-07 4:21

David Crow

27-Dec-07 4:21

Have you performed a test with and without the try/catch code to see the difference?

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Re: put try...catch... in a loop

followait27-Dec-07 4:30

followait

27-Dec-07 4:30

It works with sql server 2000.
But without the try...catch... the codes changed.
However, the try...catch... version is about 10% slow.
All because I insert strings to sql server 2000, and the string many contains singal quotation(s).

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