C / C++ / MFC Discussion Boards

8-Jul-02 5:04

I want to use XML to transport some data across HTTP protocol. When text in some element contains US ASCI characters then all is OK. But when some language- specific characters appear i get error.

I want to encode contents of some elements (these that contain these unfortunate characters) to BASE.64.

when I do the following, I get error.

_variant_t var_val=GetSomeText_WithStrangeChars()
..check errorcodes...
pNewNodeOut->put_dataType(L"bin.base64");
..check errorcodes... //ok it works so far
pNewNodeOut->put_nodeTypedValue(var_val); //HERE CRASH
//It is here where HRESULT is E_FAIL

The first question is: What to do to avoid error, and
to sucessfully put value of _variant_t (containing BSTR)
into element whose type is set to bin.base64 ?

The last question is:
Shall I be able to automatically get the value of the
element without explicit converting it from BASE.64 ?
I mean : Shall MSXML parser do the conversion automatically for me when I will call nodeTypedValue property ?

Thanks
Michal Januszczyk

ShellExecute()

briefcase8-Jul-02 4:53

briefcase

8-Jul-02 4:53

I'm sorry for the generalization, but I need help using the ShellExecute() function (to launch a .hlp file).

ShellExecute(
?,
"open",
"Helpfile.hlp",
NULL,
?, //dir
SW_SHOW
);

I put a '?' where I don't know what I should put Smile | :)

The first is the window handle thingy, I really don't want the opened file attached to anything, how do i do this?

The second ? is the directory... I have no idea what to set this too. If it's the programs current dir, how do i find that?

Thanks

Re: ShellExecute()

DanielP8-Jul-02 5:24

DanielP

8-Jul-02 5:24

Set NULL.
To know current dir - invoke GetModuleFileName()

Re: ShellExecute()

Rickard Andersson²⁰8-Jul-02 5:24

Rickard Andersson²⁰

8-Jul-02 5:24

briefcase wrote:
The first is the window handle thingy, I really don't want the opened file attached to anything, how do i do this?

Simply put NULL there!
It works just fine!

briefcase wrote:
The second ? is the directory... I have no idea what to set this too. If it's the programs current dir, how do i find that?

Simply put NULL there too!

Those aren't necessary when you do such a thing that you do!

Smile | :)

Rickard Andersson@Suza Computing
C# and C++ programmer from SWEDEN!
UIN: 50302279
E-Mail: nikado@pc.nu
Speciality: I love C#, ASP.NET and C++!

Re: ShellExecute()

briefcase8-Jul-02 6:07

briefcase

8-Jul-02 6:07

hmm... alright, what am i doing wrong?

ShellExecute(
NULL,
"open",
"myhelp.hlp",
NULL,
NULL, //dir
SW_SHOW
);

myhelp.hlp exists in the same dir as the calling program.

Re: ShellExecute()

DanielP8-Jul-02 6:26

DanielP

8-Jul-02 6:26

that's right code. And what is happend then?

(Note that lpVerb can be setted to NULL too )

Re: ShellExecute()

Stuart Dootson8-Jul-02 8:59

Stuart Dootson

8-Jul-02 8:59

HWND(0) for the first argument - then any windows are parented by the desktop

NULL is usually fine for the directory parameter - it's the 'default directory' (i.e. if you were at the command prompt, it's what would be listed if you did 'dir .'), which is usually not needed if you've specified an absolute path (i.e. drive:\path...\filename.extension or \\server\path...\filename.extension for the file parameter). To get the current directory (if you need to), use the GetCurrentDirectory Win32 function.

Stuart Dootson

'Java, Basic, who cares - it's all a bunch of tree-hugging hippy cr*p'

Help me>>>>>>>>>>>>>>>>

Michael Liu8-Jul-02 4:48

Michael Liu

8-Jul-02 4:48

How to get rid of ghost windows in XP? Thx

mIchAel Liu

Re: Help me>>>>>>>>>>>>>>>>

Marshall8-Jul-02 5:16

Marshall

8-Jul-02 5:16

Michael Liu wrote:
How to get rid of ghost windows in XP?

What's a ghost window? Confused | :confused:

If you continue to do the same things you always did,
don't be surprised if you get the same results you always got.

Re: Help me>>>>>>>>>>>>>>>>

benjymous8-Jul-02 5:38

benjymous

8-Jul-02 5:38

Search back for one of the last previous times he asked this same question

--
Help me! I'm turning into a grapefruit!

Re: Help me>>>>>>>>>>>>>>>>

Marshall8-Jul-02 7:07

Marshall

8-Jul-02 7:07

benjymous wrote:
Search back for one of the last previous times he asked this same question

After searching his messages as you suggested, I came to this conclusion - sometimes there's a very good reason why a question goes unanswered on CP.

Thanks!

If you continue to do the same things you always did,
don't be surprised if you get the same results you always got.

Re: Help me>>>>>>>>>>>>>>>>

Michael Liu8-Jul-02 7:41

Michael Liu

8-Jul-02 7:41

The problem is this ghost windows only happened in XP system, not Win2000&98/95. And began at Oct.2001, MSDN started to say something about the ghost window in its doc, but no more infomation to deal with ghost windows. (read the WM_PAINT in MSDN). Thanks

mIchAel Liu

How o disable Refresh command ?

Ryszard Krakowiak8-Jul-02 4:12

Ryszard Krakowiak

8-Jul-02 4:12

Hi
I'd like to disable refresh (F5) command in CHTMLView and CDHtmlDialog application.

I created mixed class CDHtmlView wich is derived from CHTMLView and has event sinking from CDHtmlDialog.

I try to catch key down message in DHTML_EVENT_MAP:

DHTML_EVENT(DISPID_HTMLELEMENTEVENTS_ONKEYDOWN,NULL,OnAllKeyDown)

But the OnAllKeyDown function is never called.

How to disable page refresh ????

Re: How o disable Refresh command ?

Ryszard Krakowiak8-Jul-02 4:24

Ryszard Krakowiak

8-Jul-02 4:24

I found

DocHostUIHandler::TranslateAccelerator

and return S_OK

very simple Smile | :)

))

CAxWindow & CWnd

AJ1238-Jul-02 3:18

AJ123

8-Jul-02 3:18

Isn't CAxWindow the ATL equivalent of CWnd? it's just in MFC I was able to call InvokeHelper, but in CAXWindow this isn't available to me.

Can anyone offer any advice?

Wierd GetFileSize problem

Senkwe Chanda8-Jul-02 3:18

Senkwe Chanda

8-Jul-02 3:18

When I call GetFileSize in debug mode it returns the correct value of 516. In realease mode it returns some HUGE value

DWORD numBlocks = GetFileSize(hOriginal, NULL)/64;

What could be the problem? I'm a bit stumped.

And when God, who created the entire universe with all of its glories, decides to deliver a message to humanity, He WILL NOT use, as His messenger, a person on cable TV with a bad hairstyle.

Re: Wierd GetFileSize problem

C^hris L^osinger8-Jul-02 3:50

C^hris L^osinger

8-Jul-02 3:50

i'll guess that hOriginal is NULL

-c

Being just contaminates the void.
--Robyn Hitchcock

Image Processing - easy, like Sunday morning.

Re: Wierd GetFileSize problem

Senkwe Chanda8-Jul-02 4:03

Senkwe Chanda

8-Jul-02 4:03

Hmmm, why would it be NULL only in DEBUG mode though?

And when God, who created the entire universe with all of its glories, decides to deliver a message to humanity, He WILL NOT use, as His messenger, a person on cable TV with a bad hairstyle.

Re: Wierd GetFileSize problem

C^hris L^osinger8-Jul-02 4:06

C^hris L^osinger

8-Jul-02 4:06

how are you setting hOriginal?

Being just contaminates the void.
--Robyn Hitchcock

Image Processing - easy, like Sunday morning.

Re: Wierd GetFileSize problem

Senkwe Chanda8-Jul-02 4:33

Senkwe Chanda

8-Jul-02 4:33

Like so

HANDLE hOriginal = ::CreateFile(m_EncryptedFilePath,           
               GENERIC_READ,              
               FILE_SHARE_READ,           
               NULL,                      
               OPEN_EXISTING,             
               FILE_ATTRIBUTE_NORMAL,     
               NULL);

Sorry for the delays, I have a darn slow connection over here Smile | :)

And when God, who created the entire universe with all of its glories, decides to deliver a message to humanity, He WILL NOT use, as His messenger, a person on cable TV with a bad hairstyle.

Re: Wierd GetFileSize problem

C^hris L^osinger8-Jul-02 4:52

C^hris L^osinger

8-Jul-02 4:52

are you testing hOriginal for NULL ?

if GetFileSize fails, it returns 0xffffffff, which, when divided by 64, will give an apparently huge number.

try calling GetLastError after your GetFileSize call.

-c

Being just contaminates the void.
--Robyn Hitchcock

Image Processing - easy, like Sunday morning.

Re: Wierd GetFileSize problem

Senkwe Chanda8-Jul-02 5:14

Senkwe Chanda

8-Jul-02 5:14

Chris, thanks for the help, you certainly pointed me in the right direction. However, the problem was a bit indirect.

m_EncryptedFilePath = "c:\file1.abc".

Now, in debug mode, all is well as I have said. But in release, hOriginal becomes NULL, meaning the file does not exist. (The file does exist).

So I just now tried to change

m_EncryptedFilePath = "C:\\file1.abc"

and lo and behold it works.

Frankly, I don't know why. I'm aware that '\' is an escape sequence but then why does it work for my DEBUG code?

If you have any idea on why this is so (even though the prob itself is solved) I'm all ears.

Regards

Senkwe

And when God, who created the entire universe with all of its glories, decides to deliver a message to humanity, He WILL NOT use, as His messenger, a person on cable TV with a bad hairstyle.

Re: Wierd GetFileSize problem

Senkwe Chanda8-Jul-02 5:41

Senkwe Chanda

8-Jul-02 5:41

uggh, spoke too soon, still won't work when I pass in the file name as a command line param.

Thanks for the help Chris, I appreciate it Smile | :)

It'll come to me in the morning Dead | X|

Senkwe

And when God, who created the entire universe with all of its glories, decides to deliver a message to humanity, He WILL NOT use, as His messenger, a person on cable TV with a bad hairstyle.

Re: Wierd GetFileSize problem

Senkwe Chanda8-Jul-02 4:52

Senkwe Chanda

8-Jul-02 4:52

Turns out that your guess is correct, I tried the following...

DWORD numBlocks = GetFileSize(NULL, NULL)/64;

and sure enough I got the exact same huge number as before. I'm still stumped as to WHY it's NULL in RELEASE mode but not in DEBUG mode. Could be access rights or permissions.

And when God, who created the entire universe with all of its glories, decides to deliver a message to humanity, He WILL NOT use, as His messenger, a person on cable TV with a bad hairstyle.

Problem with WM_CREATE

S van Leent8-Jul-02 2:40

S van Leent

8-Jul-02 2:40

I am creating my own framework (some already know), but there is one problem handling the WM_CREATE message.

This is my code

EWindow::EWindow(EString caption, EControl *parent, UINT menu) : EControl()
{
this->hInstance = hInstance;
WNDCLASSEX wcex;

wcex.cbSize = sizeof(WNDCLASSEX);

wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = (WNDPROC)OldControlProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = NULL;
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName = (LPCTSTR)menu;
wcex.lpszClassName = caption.GetString();
wcex.hIconSm = NULL;

RegisterClassEx(&wcex);

EString wndclassstr = caption + "___";

hControl = CreateWindow(wndclassstr.GetString(), caption.GetString(), WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, parent->GetHandle(), NULL, NULL, NULL);

SetWindowLong(hControl, GWL_USERDATA, reinterpret_cast<long>(this));
}

As you know, the WM_CREATE Message is sent within the CreateWindow function, but this isn't cought at the right place, because I want him to do it object oriented. So, after the SetWindowLong(...) function. Does anyone know how I can fool the system, so the WM_CREATE message is sent after the SetWindowLong(...)

thanks in advance,

Sjoerd van Leent

LPCSTR Dutch = "Double Dutch Smile | :)

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