CMDIChildWnd - window arrangement - C / C++ / MFC Discussion Boards

chen21-May-02 18:15

21-May-02 18:15

Hi,

In a dialog-based application, i need finding all of the cd-rom
drivers and then needs open, close, read and write the to cd-rom.
I want to use the low-level SCSI commands to operate all of these.
I want to know if it is possible for embeding such low-level
scsi commands code into the VC++ code. Where can i get some
useful info for doing this? Where can i find some materials (simple
example code) for SCSI commands code?

Thanks in advance!

chen

Re: SCSI Commands and VC++?

Dana Holt21-May-02 19:22

Dana Holt

21-May-02 19:22

I have been looking into this myself, but I haven't written much code yet. Wink | ;)

You should download the Windows DDK:
http://www.microsoft.com/ddk/

Here is also a web site that has an intro:
http://www.hochfeiler.it/alvise/ASPI_1.HTM

I am sure you can find more if you do a little searching on Google.

Hope this helps.

--
Dana Holt
Xenos Software

Re: SCSI Commands and VC++?

chen21-May-02 21:17

chen

21-May-02 21:17

Hi Dana Holt,

Thanks a lot!
I have read the materials about ASPI for win32. and download
some files. I try to make a simple test program.
I have scsidefs.h, wnaspi32.h and some code such as AspiStart()
ScsiBusScan(),ScsiInquiry(), ... , but i failed. Is there other header files i am missing ?

chen

Re: SCSI Commands and VC++?

Dana Holt22-May-02 7:04

Dana Holt

22-May-02 7:04

chen wrote:
I have read the materials about ASPI for win32. and download
some files. I try to make a simple test program.
I have scsidefs.h, wnaspi32.h and some code such as AspiStart()
ScsiBusScan(),ScsiInquiry(), ... , but i failed. Is there other header files i am missing ?

I have not gotten a chance to write any code, so am not sure what the problem would be.

Did the program compile? If so, then the header files should be ok.

That's about all the help I can offer with my experience.

--
Dana Holt
Xenos Software

Re: SCSI Commands and VC++?

Mike Nordell23-May-02 3:57

Mike Nordell

23-May-02 3:57

You might want to check out akrip.

Static control pops up Explorer window

paulb21-May-02 16:29

paulb

21-May-02 16:29

I have a static control on a dialog which has the 'Notify' style set, so that it sends notification messages when clicked on. But if I click on the control when it contains no text it pops up an Explorer window, this doesn't happen when the control contains text. I used Spy++ to check the messages the dialog window was getting and this is the result:

1. Mouse click on static control containing text (ok)...

<00207> 00170324 R WM_ACTIVATE
<00208> 00170324 S DM_GETDEFID
<00209> 00170324 R DM_GETDEFID wHasDef:DC_HASDEFID wDefID:0001
<00210> 00170324 S WM_COMMAND wNotifyCode:STN_CLICKED wID:1003 hwndCtl:0016048E

2. Mouse click on static control not containing text (pops up Explorer window)...

<00173> 00130326 R WM_ACTIVATE
<00174> 00130326 S DM_GETDEFID
<00175> 00130326 R DM_GETDEFID wHasDef:DC_HASDEFID wDefID:0001
<00176> 00130326 S WM_DDE_INITIATE hwnd:000A0418 aApp:C049 ("Folders") aTopic:C04A ("AppProperties")
<00177> 00130326 R WM_DDE_INITIATE
...
<00228> 00130326 S WM_COMMAND wNotifyCode:STN_CLICKED wID:1003 hwndCtl:001104DE

I looks like the WM_DDE_INITIATE message is the problem, but where is this message coming from?! and why?

Re: Static control pops up Explorer window

Dana Holt21-May-02 19:25

Dana Holt

21-May-02 19:25

paulb wrote:
I looks like the WM_DDE_INITIATE message is the problem, but where is this message coming from?! and why?

I don't know why the message is being sent, but here is info on the message:
http://msdn.microsoft.com/library/default.asp?url=/library/en-us/winui/dde_1f8l.asp

--
Dana Holt
Xenos Software

CMDIChildWnd - window arrangement

Heywood21-May-02 15:35

Heywood

21-May-02 15:35

Hello,

I'm have the need to write a custom window arrangement routine (like the normal tile, cascade, etc) in an MFC MDI app.

What i'm need to do is "stack" MDI child windows of a certain CMdiChildWnd derived type, while minimizing all other MDIChild frame windows.

Does CMidFrameWnd maintain a list of pointers to it's child frame windows? If not, any idea how i can enumerate the child frames, and figure out what CMDIChildWnd-derived type they are?

Thanks,

Heywood

Shrinking DIB StretchDIBits ?

21-May-02 14:45

Hi !

I was working on Device Independent Bitmap (DIB) and wanted to shrink my image down to a thumbnail size, so used the
StretchDIBits() function.

But the shrinking lead to a severe color loss. Why ????

Is there anyway I can shrink my DIB without color loss.

Please Help

Re: Shrinking DIB StretchDIBits ?

C^hris L^osinger21-May-02 15:10

C^hris L^osinger

21-May-02 15:10

SetStretchBltMode(COLORONCOLOR);

-c

Cheap oil. It's worth it!

ISEffects - effects for images

Re: Shrinking DIB StretchDIBits ?

22-May-02 0:38

Hi !!

It worked just fine.. The image is perfect now.

Thanks a lot.

Green.

Re: Shrinking DIB StretchDIBits ?

Shog⁹21-May-02 15:32

Shog⁹

21-May-02 15:32

If you don't mind it still looking bad on Win9x, you can try calling SetStretchBltMode(HALFTONE); prior to calling StretchDIBits(). Caveat: i know it works with StretchBlt(), but i've never tried it with StretchDIBits().

---Shog9---
From now on we can call C# and MC++ "The square wheel languages"

-- Jack Handy, The Lounge

Re: Shrinking DIB StretchDIBits ?

22-May-02 0:29

Hi !!

Well, It did work for StretchDIBits().
The image is perfect now...
Thanks a lot.

Green.

Re: Shrinking DIB StretchDIBits ?

22-May-02 0:35

Hi !!

Well, It worked for StretchDIBits().
The image is perfect now...
Thanks a lot.

Green.

Set View Position in CEditView :: MFC

valikac21-May-02 14:33

valikac

21-May-02 14:33

Hi.

I have an interesting problem. I am working on a program with with a CEditView window. I use GetEditCtrl().SetWindowsText to update the view with new text. Whenever I call SetWIndowsText, the CEditView repaint the entire view, but it always resets the scroll position. For example, let say I am view line 200. (line 200 is at top of view). Whenever I update the view, CEditView resets the current view to line 0.

Is there a way to set what line should CEditView beginning?

Thanks,
Kuphryn

Re: Set View Position in CEditView :: MFC

Prem Kumar21-May-02 21:05

Prem Kumar

21-May-02 21:05

Use
CEdit& edit = GetEditCtrl() ;
edit.LineScroll(200,0) ;

Re: Set View Position in CEditView :: MFC

valikac22-May-02 4:47

valikac

22-May-02 4:47

Thanks.

A special thanks to Scott McPhillips of MSDN newsgroup also for the solution (he posted it yesterday).

Kuphryn

CStringArray

21-May-02 14:11

Hi,

CStringArray& MyArrayFunction()
{

   CStringArray aArray;
   aArray.SetSize(...
   aArray.SetAt(...
   ...

   return aArray;
}

Question1: is the return line OK?
Question2: how can I fill another array in my code with the returned stringarray?

I tried

CStringArray aMyArray = MyArrayFunction();

but
error C2440: 'initializing' : cannot convert from 'class CStringArray' to 'class CStringArray'
is the answer.

Could you please help me?

Thanks a lot

Ricardo

Re: CStringArray

soptest21-May-02 14:27

soptest

21-May-02 14:27

change to:

CStringArray* MyArrayFunction()
{   
    CStringArray *paArray = new CStringArray();   
    paArray->SetSize(...);
    return paArray;
}

getting the array

CStringArray *paMyArray = MyArrayFunction();

do not foget to delete paMyArray;

soptest

10x

21-May-02 14:32

see above...

R.

#include error

Coremn21-May-02 14:08

Coremn

21-May-02 14:08

I have the following problem. I have included this header file many times in my code with no problems. Then I "included" it into a new file which now produces errors in my typedef statement. I really dont know if it is a problem with namespace as I have no idea how to use that correctly anyway.

Code for "entity.h"

<br />
#include <list.h><br />
<br />
using namespace std ;<br />
<br />
typedef struct<br />
{<br />
	int ref;<br />
	std::string name;<br />
<br />
}EntityData;<br />
typedef	list<EntityData> ENTITYLIST;<br />

How can I include this file with out errors??

Code for "NewFile.cpp"

<br />
#include "stdafx.h"<br />
#include "NewFile.h"<br />
#include <list.h><br />
#include "entity.h"     //This produces errors from entity.h <code>:confused:

using namespace std;

Pease help!!

---

Re: #include error

Coremn21-May-02 14:16

Coremn

21-May-02 14:16

Ooops, Rather than delete this message I will just post my solution.
Use <list> instead of <List.h>

Rose | [Rose]

---

Re: #include error

soptest21-May-02 14:22

soptest

21-May-02 14:22

what is the error?

soptest

Re: #include error

Coremn21-May-02 14:32

Coremn

21-May-02 14:32

It didnt understand the list definition in my header file. This is now fixed due to the way I included the list.h file. I.E #include <list> without a .h

Thanks anyway.

---

Re: #include error

Paul M Watt21-May-02 17:55

Paul M Watt

21-May-02 17:55

The list.h is the old header file from the old C++ standard and is included to prevent old code from breaking. That is why if you are developing new code you should use the plain <list> header.

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

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