Re: CWindow::IsWindow // testing the member hWnd - ATL / WTL / STL Discussion Boards

Ed Gadziemski3-Oct-02 4:07

3-Oct-02 4:07

Is this the same as trying to create a virtual directory for an IIS server on NT 4? If so, I've got a VB script that works.

Re: ATL Web Service on NT 4.0

Alexandru Savescu3-Oct-02 4:13

Alexandru Savescu

3-Oct-02 4:13

It has nothing to do with the virtual directory. I can create that manually and it works fine.

I have also tried to make an ATL Server application (not WebService). Trying to access the srf file gets me the following error "The remote procedure call did not execute"

Any ideas? According to the documentation one can create ATL Server application on NT 4 Server. Maybe there is also something they forgot to mention....

Best regards,
Alexandru Savescu

How do I call the choose folder dialog

Jose Cruz1-Oct-02 5:18

Jose Cruz

1-Oct-02 5:18

I´m trying to show the Folder dialog. Does any body knows where can I get a sample ATL/WTL project with this.

Re: How do I call the choose folder dialog

Michael Dunn1-Oct-02 15:12

Michael Dunn

1-Oct-02 15:12

SHBrowseForFolder() is the API. There are wrapper classes here on CP (but I haven't looked to see which ones use ATL.)

--Mike--
Just released - 1ClickPicGrabber - Grab & organize pictures from your favorite web pages, with 1 click!
My really out-of-date homepage
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Re: How do I call the choose folder dialog

Jose Cruz2-Oct-02 3:47

Jose Cruz

2-Oct-02 3:47

Yes, I have the following Function wich calls the BROWSEINFO API, but when I run this on Win98 I get an exception, but on winME everything works OK. Can somebody help me solve this problem. Confused | :confused:

BOOL folderDialog(const HWND parent, const char *topic, char *result, const bool allowNew, const int extraFlags)
{
// CoInitialize must be called to support BIF_USENEWUI.
OleInitialize(NULL);

LPMALLOC pMalloc = NULL;
LPITEMIDLIST pidl = NULL;
BROWSEINFO bi;
ZeroMemory(&bi, sizeof(BROWSEINFO));

// set the bi's default values
bi.hwndOwner = parent;
bi.lpszTitle = topic;

bi.ulFlags = BIF_STATUSTEXT | extraFlags;
if (!allowNew)
{
bi.ulFlags = bi.ulFlags;
}

pidl = SHBrowseForFolder(&bi);

if(pidl != NULL)
{
SHGetPathFromIDList(pidl, result);

// free memory
if (FAILED(SHGetMalloc(&pMalloc)))
{
throw "SHGetMalloc Failed!";
}
pMalloc->Free(pidl);
pMalloc->Release();

OleUninitialize();
return (BOOL)strlen(result);
}
OleUninitialize();
return FALSE;
}

Re: How do I call the choose folder dialog

Gary R. Wheeler12-Oct-02 2:04

Gary R. Wheeler

12-Oct-02 2:04

Check the MSDN. One or more of the functions you are calling may not be implemented by the Win98 shell.

Gary R. Wheeler

CWindow::IsWindow // testing the member hWnd

Phil.Benson1-Oct-02 3:33

Phil.Benson

1-Oct-02 3:33

While testing my application (a Win32 dll using WTL/ATL not a COM server, that exports functions to a mfc app) on Win98 I have had the following problem.

Under Windows XP/ Win 2000 the following works fine, and as expected

if(pPage->m_hWnd != NULL && ::IsWindow(pPage->m_hWnd) == TRUE){

_sError.Format("%s %d", "Showing page ", pPage->m_nPageID);
::MessageBox(NULL, _sError,"",MB_OK);

pPage->EnableWindow(TRUE);
pPage->ShowWindow(SW_RESTORE);
bResult = pPage->OnSetActive();
}

however under win 98, ::IsWindow always returns FALSE, regrdless.... has anyone a workaround for this as (I think?) it adds a bit more safety. I have even tried pPage->IsWindow(), but this also fails

Anyone had similar problems?

bum... and I thought I´d got rid of all the bugs Frown | :(

Re: CWindow::IsWindow // testing the member hWnd

Joaquín M López Muñoz1-Oct-02 10:11

Joaquín M López Muñoz

1-Oct-02 10:11

I don't really think this is the problem, but it costs nothing to give it a try: replace your check with

if(pPage->m_hWnd != NULL && ::IsWindow(pPage->m_hWnd)){
...

Note the docs say the result on success of IsWindow is nonzero, which is not the same as being equal to TRUE.

Joaquín M López Muñoz
Telefónica, Investigación y Desarrollo

Re: CWindow::IsWindow // testing the member hWnd

Phil.Benson1-Oct-02 21:43

Phil.Benson

1-Oct-02 21:43

Thnaks, this did the job, but why did my function work on NT4/2000/XP. but on Win98 (and I presume on Win95) not, this was what confused me......?

Thnaks once again

Grüß Phil

bum... and I thought I´d got rid of all the bugs Frown | :(

Re: CWindow::IsWindow // testing the member hWnd

Gary R. Wheeler12-Oct-02 2:12

Gary R. Wheeler

12-Oct-02 2:12

The docs say that ::IsWindow() returns non-zero if the argument is a valid window. In one case, the O/S returns TRUE. In another case, the O/S is returning (possibly) the window handle, or something else, that is non-zero.

As a rule, the following:

BOOL condition = ::Windows_API_Call(...);
...
if (condition) {
    ...
}

is preferable to

if (condition == TRUE) {
    ...
}

since the Windows API (where BOOL is defined) tends to play fast-and-loose with BOOL return values. Often, they define the return value of an API call as BOOL (which you assume has only two values, TRUE and FALSE), when it would be better to specify it as a DWORD. The return value in that case means one thing when it is non-zero, and something else when it is zero.

Gary R. Wheeler

How to creat an Object from with a pointer

Jose Cruz30-Sep-02 7:51

Jose Cruz

30-Sep-02 7:51

I have this code wich creates a Grid, this works using a wrapper class.
CdxDBGrid m_grid;
m_grid.Create(_T("TestGrid"),WS_CHILD|WS_VISIBLE, CRect(1, 2, 3, 4), this,
1);

So the question How do I achive the same as above but with a pointer. Or how do I create a View with my pointer.

IdxDBGridPtr m_pGrid Cry | :((

Re: How to creat an Object from with a pointer

Paul M Watt30-Sep-02 9:57

Paul M Watt

30-Sep-02 9:57

<br />
CdxDBGrid *m_pgrid;<br />
<br />
// Allocate space for you object.<br />
m_pgrid = new CdxDBGrid;<br />
if (!m_pgrid)<br />
{<br />
    return error;<br />
}<br />
<br />
// create the actual window that the object wraps.<br />
m_grid->Create(_T("TestGrid"),WS_CHILD|WS_VISIBLE, CRect(1, 2, 3, 4), this,1);<br />
<br />
// when you are done, delete the object.<br />
delete m_pgrid;<br />
<br />

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Re: How to creat an Object from with a pointer

Jose Cruz1-Oct-02 3:43

Jose Cruz

1-Oct-02 3:43

First I appreciate your answer. But What I really want to know is, if it is a good idea to use a Grid that resides in a DLL. And if so How do I create an Object of it. I did this but with MFC and the autogenerated wrapper classes and everything works OK but I don`t know how to use it in a ATL/WTL project. This is because if I try to use the generated class I get some error about undefined class. OMG | :OMG:

Combo heigth problem

Jose Cruz30-Sep-02 7:46

Jose Cruz

30-Sep-02 7:46

How do I set my combos height wich resides in a DialogBox Sleepy | :zzz:

Re: Combo heigth problem

Paul M Watt30-Sep-02 10:00

Paul M Watt

30-Sep-02 10:00

First make a call GetDlgItem with the handle of the parent dialog and the ID of your combo box. This will return a handle to the combo box to you.

You can then use that handle in a call to MoveWindow to resize and move the combo box.

Build a man a fire, and he will be warm for a day
Light a man on fire, and he will be warm for the rest of his life!

Re: Combo heigth problem

Jose Cruz1-Oct-02 3:51

Jose Cruz

1-Oct-02 3:51

The problem is when I click on the combos down arrow, it won`t display the list. The list does contains some items. But I can`t see them.

Re: Combo heigth problem

Ed Gadziemski1-Oct-02 4:06

Ed Gadziemski

1-Oct-02 4:06

Bring up your dialog in the resource editor. Click on the dropdown and pull the sizing box downward to the size you want.

Re: Combo heigth problem

Jose Cruz1-Oct-02 5:16

Jose Cruz

1-Oct-02 5:16

Thakn you for your answer.

Seems like everything it`s dificult not knowing how to do it

STL reference?

User 988527-Sep-02 6:53

User 9885

27-Sep-02 6:53

Is there some article that demonstrates the use of one STL container inside another?

for example, how to use

std::map<std::string, std::vector<std::string> > x;

ie, how do i insert?
how do i get back the reference of the vector instead of copying it out?

etc.

Thomas

modified 29-Aug-18 21:01pm.

Re: STL reference?

RedZenBird27-Sep-02 8:18

RedZenBird

27-Sep-02 8:18

maybe multimap is a better fit for what you want here?

but, here is a code snippette that may be worth while though:

...

// define types
//
using namespace std;

typedef vector<string> STRING_LIST;
typedef map< string, STRING_LIST* > MAP_STRING_TO_LIST;
typedef MAP_STRING_TO_LIST::iterator MAP_STRING_TO_LIST_ITER;

// declare variable of type
//
MAP_STRING_TO_LIST oMyList;

bool InsertString( string oKey, string oValue )
{

MAP_STRING_TO_LIST_ITER oIter = oMyList.find( oKey );
if ( oMyList.end() == oIter )
{
// no entry yet for this key...
//
STRING_LIST* poList = new STRING_LIST;
poList->push_back( oValue );
oMyList.insert( MAP_STRING_TO_LIST::value_type( oKey, poList );
}
else
{
STRING_LIST* poList = (*oIter).second;
poList->push_back( oValue );
}
}

hope that helps

Just trying to keep the forces of entropy at bay

atl full control

Anonymous23-Sep-02 18:05

Anonymous

23-Sep-02 18:05

I can't recieve WM_CREATE message in my control . How could this happen? What are the possible reasons?

Re: atl full control

Todd Smith24-Sep-02 7:03

Todd Smith

24-Sep-02 7:03

You might need to set the following variable in your constuctor

CComControlBase::m_bWindowOnly = TRUE;

Todd Smith

Re: atl full control

Jörgen Sigvardsson3-Oct-02 14:28

Jörgen Sigvardsson

3-Oct-02 14:28

If it's dialogbased control, you should receieve WM_INITDIALOG instead.

--
Please state the nature of your medical emergency.

How to do this properly with STL?

Mark Tutt23-Sep-02 3:49

Mark Tutt

23-Sep-02 3:49

I've come across an interesting problem, that I can't find a nice clean solution to.

The problem is how to manage adding and deleting objects from two vectors containing different objects.

Here's what I've got: A list of objects that contain an vector of ints as data points. The object holding the list has an vector of description objects containing information about each of the ints in the vector. They have a one to one relationship.

Now, I need to support adding or removing data points. What I can't figure out how to do is how to do this without a lot of overhead. My first thought was that I'd simply get the position of the data point description object that was added, then simply do a for_each over the list and call insert or erase for the appropriate position in the data points vector as required by the operation. Unfortunately both of those functions require an iterator to the item being erased, or the position the new item is being inserted at, not just it's index position.

Is there a way to do this without iterating over each data point vector? Since the position in the vector is going to be the same for all the objects, it seems like there should be a way to do this without all the manipulation.

Any ideas?

Re: How to do this properly with STL?

Joao Vaz23-Sep-02 4:02

Joao Vaz

23-Sep-02 4:02

Mark Tutt wrote:
Here's what I've got: A list of objects that contain an vector of ints as data points. The object holding the list has an vector of description objects containing information about each of the ints in the vector. They have a one to one relationship.

Why didn't you make a map in this case ? a map of <DataPoints,DescriptObj> ????? or if Description objects must be a vector of points ...
<DataPoints,vector<DescriptObj>> ?

So you want to remove a specific data point , it's enough to reference the data point .

Cheers,Joao Vaz
And if your dream is to care for your family, to put food on the table, to provide them with an education and a good home, then maybe suffering through an endless, pointless, boring job will seem to have purpose. And you will realize how even a rock can change the world, simply by remaining obstinately stationary.-Shog9

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