C / C++ / MFC Discussion Boards

Jon Sagara13-Feb-04 14:52

13-Feb-04 14:52

Is it true that CToolBar button bitmaps can only contain 16 colors?

Jon Sagara
Vegetarianism is unhealthy. Humans need protein, and lots of it. Put down those sprouts and pick up a T-bone!
-- Michael Moore

Latest Article: Breadcrumbs in ASP.NET

Re: CToolBar

Joe Woodbury13-Feb-04 16:46

Joe Woodbury

13-Feb-04 16:46

No.

They use image lists which can be loaded with various type of images.

http://msdn.microsoft.com/library/default.asp?url=/library/en-us/shellcc/platform/commctls/imagelist/functions/imagelist_create.asp[^]

Anyone who thinks he has a better idea of what's good for people than people do is a swine.
- P.J. O'Rourke

how to capture the ouput of console and rediect to a window.

maxdavid13-Feb-04 14:49

maxdavid

13-Feb-04 14:49

Hi All,

I'm using createProcess to launch a console application, but I don't know how to capture the output and redirect to a window. Can somebody help me with it? really appreciate it. thanks in advance. -Dave.

Re: how to capture the ouput of console and rediect to a window.

Michael Dunn13-Feb-04 14:57

Michael Dunn

13-Feb-04 14:57

Check out An Advanced Windows Hotfix Manager[^], in that article I show how to capture the output using a pipe.

--Mike--
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Re: how to capture the ouput of console and rediect to a window.

maxdavid13-Feb-04 15:06

maxdavid

13-Feb-04 15:06

thanks, but I didn't find any information related to the problem. Is this the right one? thanks anyway.

Re: how to capture the ouput of console and rediect to a window.

Michael Dunn13-Feb-04 19:29

Michael Dunn

13-Feb-04 19:29

Sorry, it's not in the article after all, but it's in the source Smile | :)

--Mike--
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-- Buffy

CView OnDraw

Frank Deo13-Feb-04 13:34

Frank Deo

13-Feb-04 13:34

This may be overly simple, but the solution has eluded me and research has come up with nothing.

I have a CView derived class. This class's only job is to display nothing. Smile | :)

I'd like to insert the text: "There is no data to display in this view" in the view. Centered, at the top.

I know I have to override OnDraw. I know I have to use TextOut. How do I get the text to use the system font, and center it?

Thanks!
Frank

"Keyboard Error - Press F1 to Continue"

Re: CView OnDraw

cadinfo13-Feb-04 14:35

cadinfo

13-Feb-04 14:35

CGdiObject * pOldFont = pDC->SelectStockObject(DEFAULT_GUI_FONT);
CString s;
s.LoadString(IDS_NOPICTURE);
CRect rcClient;
GetClientRect(rcClient);
CPoint center = rcClient.CenterPoint();

pDC->SetBkMode(TRANSPARENT);
pDC->SetTextAlign(TA_CENTER | TA_BASELINE);
pDC->TextOut(center.x, center.y, s);

if (pOldFont) pDC->SelectObject(pOldFont);

Re: CView OnDraw

Frank Deo13-Feb-04 14:43

Frank Deo

13-Feb-04 14:43

Yes! Thank you very much.

"Keyboard Error - Press F1 to Continue"

Get mouse coordinates

alex.barylski13-Feb-04 12:25

alex.barylski

13-Feb-04 12:25

I have a derived CListCtrl in which I handle a double click event, but I need to find out which item was clicked on (if any).

From the function below is there any way I can get mouse coordinates from HMHDR??? I need to pass this info onto HitTest() but it doesn't appear likely I can get mouse coordinates from the parameters below???

CListCtrl::OnDblclk(NMHDR* pNMHDR, LRESULT* pResult)

Should I use PeekMessage and get the coordinates of the mouse when the last message was fired off???

What method should I use?

Thanks

Cheers Smile | :)

The word of the day is legs, let's go back to my house and spread the word Poke tongue | ;-P

Re: Get mouse coordinates

Jörgen Sigvardsson13-Feb-04 13:21

Jörgen Sigvardsson

13-Feb-04 13:21

If you look closely in the MSDN docs, you'll see that NM_DBLCLK for listviews, actually sends a NMITEMACTIVATE*. NMITEMACTIVATE* info = (NMITEMACTIVATE*)pNMHDR

(There's a NMITEMACTIVATE::iItem that'll interest you, I'm sure... Smile | :)

)

--
Summer breeze makes me feel fine. Blowing, through the jasmine in my mind.

Quick Question

Nick Parker13-Feb-04 11:13

Nick Parker

13-Feb-04 11:13

Ok, I am stumped here. I have an ActiveX COM dll written in VB6 that is returning an array of doubles. I am using the Class Wizard to import the typelib. so I can call a series of methods one of which returns array of doubles. The class wizard writes out both the .h and .cpp files for me, however it comments out the one method that is returning the array doubles saying:

// method 'GetNum' not emitted because of invalid return type or parameter type

I found a kb article telling me to use the ITypeLib viewer so I can manually write the method into the header and cpp files. This is where I am stuck. The ITypeLib viewer shows the method as such:

[id(0x60030004)]<br />
HRESULT GetNum([out, retval] SAFEARRAY(double)* );

Any help for writing the guts to make the InvokeHelper call would be much appreciated.

This is what I was initially trying:

SAFEARRAY* _Moses::GetNum()
{
	SAFEARRAY* result;
	InvokeHelper(0x60030004, DISPATCH_METHOD, VT_R8, (void*)&result, NULL);
	return result;
}

TIA.

- Nick Parker
My Blog

Re: Quick Question

Monty²14-Feb-04 0:16

Monty²

14-Feb-04 0:16

just a wild suggestion

try returning SafeArray of VARIANT instead of doubles

Might do something

C makes it easy to shoot yourself in the foot; C++ makes it harder, but when you do, it blows away your whole leg

ReadProcessMemory

__Cerb13-Feb-04 10:10

__Cerb

13-Feb-04 10:10

Can anyone post an example of the ReadProcessMemory function in action, let's say I want it to read at offset 0x6FB74910

Thanks,
Michael

Listbox Frustration

C++NewBe13-Feb-04 9:53

C++NewBe

13-Feb-04 9:53

How do I size and create two columns in a ListBox?

X str1
X2 str2
.
.
Xx strx

Unsure | :~

Re: Listbox Frustration

alex.barylski13-Feb-04 10:02

alex.barylski

13-Feb-04 10:02

Use a multi-column listbox...which is very limiting or use a CListCtrl.

Cheers Smile | :)

The word of the day is legs, let's go back to my house and spread the word Poke tongue | ;-P

64-bit compatibility

Freon13-Feb-04 9:48

Freon

13-Feb-04 9:48

Is there any way to check for 64-bit and fix compatibility issues in a large .NET solution without generating thousands of warnings?

If _WIN64 *is not* defined, the Windows headers define many function parameters and return types as 32 bits, so I get warnings for all integer/pointer conversions involving those functions. For example, consider the following header functions:

inline void* GetWindowUserData (HWND hwnd)
{
return (void*) GetWindowLongPtr(hwnd, GWLP_USERDATA);
}

inline void* SetWindowUserData (HWND hwnd, void* data)
{
return (void*) SetWindowLongPtr(hwnd, GWLP_USERDATA, (LONG_PTR)data);
}

These two alone generate the following warnings in *every* source file that includes this header (which is most of them in the solution):

..\Viewapi\Vapidlg.h(155) : warning C4312: 'type cast' : conversion from 'LONG' to 'void *' of greater size
..\Viewapi\Vapidlg.h(161) : warning C4244: 'argument' : conversion from 'LONG_PTR' to 'LONG', possible loss of data
..\Viewapi\Vapidlg.h(161) : warning C4312: 'type cast' : conversion from 'LONG' to 'void *' of greater size

If _WIN64 *is* defined, a huge number of warnings are produced that I cannot tie to anything in my source code. For example:

C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\atlmfc\include\atlalloc.h(342) : warning C4244: 'argument' : conversion from 'SIZE_T' to 'size_t', possible loss of data
loss of data
C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\atlmfc\include\atlalloc.h(382) : warning C4244: 'argument' : conversion from 'SIZE_T' to 'size_t', possible loss of data
C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\atlmfc\include\atlalloc.h(381) : while compiling class-template member function 'void *ATL::_ATL_SAFE_ALLOCA_IMPL::CAtlSafeAllocBufferManager<Allocator>::Allocate(SIZE_T)'
with
[
Allocator=ATL::CCRTAllocator
]
C:\Program Files\Microsoft Visual Studio .NET 2003\Vc7\atlmfc\include\atlconv.h(778) : see reference to class template instantiation 'ATL::_ATL_SAFE_ALLOCA_IMPL::CAtlSafeAllocBufferManager<Allocator>' being compiled
with
[
Allocator=ATL::CCRTAllocator
]

How can I reduce the number of spurious warnings so that I can fix the real issues?

Thanks in advance...

Cannot attach debugger to a remote process

Anonymous13-Feb-04 9:13

Anonymous

13-Feb-04 9:13

Please help!

I have successfully debugged remote processes by changing the debug
properties for my projects. However, I can only do this when I launch the
remote process from my local copy of Visual C++ .NET 2003. I have not been
able to attach the debugger to an ongoing process launched at the remote
machine. My understanding is that I should select "Tools > Debug Process"
and then set the "Transport" value and set "Name" to my remote machine. However, "Transport"
is set to "Default" and "Name" is set to my local machine, and both fields
are shown as static labels, not as edit controls or drop-down selection
lists. It's impossible to change their values!

Does anyone know why this is happening? How can I fix this issue? I've tried reinstalling VC++ with all components selected and I still have the same problem.

Thanks,
Silvio

How do I know if I have MAPI installed for Lotus Notes mail client?

ElizabethC13-Feb-04 9:10

ElizabethC

13-Feb-04 9:10

I am starting to add an email interface to the MFC application. How do I know if I have MAPI installed for Lotus Notes mail client?

Elizabeth

Need help sending email out from MFC application using Lotus Notes mail server

ElizabethC13-Feb-04 8:44

ElizabethC

13-Feb-04 8:44

I need help implementing an interface to send email out from a MFC application using our Lotus Notes mail server. I tried running the sample application NPP came with the Visual Studio. It always came up with an Outlook dialog. But I want to use our Lotus Notes mail server. Can you tell me where to add the mail server information. By the way, I looked at the sample code, there was no custom code for OnFileSendMail.

Elizabeth

Re: Need help sending email out from MFC application using Lotus Notes mail server

valikac14-Feb-04 5:34

valikac

14-Feb-04 5:34

Are you implying the use the Lotus mail client as the default Windows e-mail client?

Kuphryn

Dial-up Networking & Dialing Rules

Russell Morris13-Feb-04 8:16

Russell Morris

13-Feb-04 8:16

Does anybody know of what APIs I can use to enumerate the configured 'Location's in Windows Dialup Networking? I also need to know how to set the active location programmatically before I invoke a RasDial call...

Does anyone know of the APIs that handle this?

--
Russell Morris

"So, broccoli, mother says you're good for me... but I'm afraid I'm no good for you!" - Stewy

Re: Dial-up Networking & Dialing Rules

valikac14-Feb-04 5:35

valikac

14-Feb-04 5:35

Lookup up the source code for RasDial.

Kuphryn

SQL compare time part of datetime field

asdf175313-Feb-04 7:29

asdf1753

13-Feb-04 7:29

hi how can i compare time part of datetime field in SQL, for exaple :
time of datetimefield between '12:24:36' and '18:50:25'
thank you
Rose | [Rose]

Re: SQL compare time part of datetime field

David Crow13-Feb-04 8:11

David Crow

13-Feb-04 8:11

SELECT xxx FROM xxx WHERE datetimefield BETWEEN #01/01/1970 12:24:36# AND #12/31/2038 18:50:25#

I had to do the opposite once where I wanted rows for a particular day, regardless of the time. I used:

SELECT xxx FROM xxx WHERE datetimefield BETWEEN #02/13/2004 00:00:00# AND #02/13/2004 23:59:59#

A rich person is not the one who has the most, but the one that needs the least.

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