HKEY to string - C / C++ / MFC Discussion Boards

Disabling Alt-Tab using RegsterHotkey for Windows 98

JP Manalo30-Jul-05 7:46

30-Jul-05 7:46

I have tried using RegisterHotkey for Windows XP to disable Alt-Tab and it worked properly. But when i tried using the same code for Windows 98, the Alt-Tab is still working. How do you do this in Windows 98? Thank You.

Re: Disabling Alt-Tab using RegsterHotkey for Windows 98

Michael Dunn30-Jul-05 12:35

Michael Dunn

30-Jul-05 12:35

You can't assign a hotkey to Alt+Tab on any OS prior to XP. You'd need to use a keyboard hook.

--Mike--
Visual C++ MVP Cool | :cool:

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Re: Disabling Alt-Tab using RegsterHotkey for Windows 98

vishalmore30-Jul-05 23:01

vishalmore

30-Jul-05 23:01

Global keyboard hooks would do the trick for you.

Cheers,
Vishal

Control Notification Messages be sent to a non-parent..

Maverick30-Jul-05 7:37

Maverick

30-Jul-05 7:37

messages like ON_EN_SETFOCUS for a CEdit Control is typically sent through its parent,ryt?

This is the situation of CControlBar->Intermediate CWnd->CEdit..
CControlBar is docked on a CMainFrame... CEdit's parent is an intermediate CWnd..

I want SetFocus notifications and ENTER key presses to be handled by CControlBar or on the CMaiNFrame.. is there anyway i can do these?

regards,

Maverick

Why is a CButton disabled on CDialogBar

laiju30-Jul-05 7:34

laiju

30-Jul-05 7:34

I am unable to activate the CButton control that I put on a CDialogBar.
I remember reading somewhere that on a Dialog bar the CButton is disabled.
Can i enable it ?
Thanx in advance

laiju

Re: Why is a CButton disabled on CDialogBar

Maverick30-Jul-05 7:48

Maverick

30-Jul-05 7:48

Hello. I have the same problem also.. Although I haven't tried it yet, this is the info i got on a website.. hope this helps...

INFO: CDialogBar Button Enabled When Command Handler Present
View products that this article applies to.
Article ID : 98198
Last Review : December 11, 2003
Revision : 1.0
This article was previously published under Q98198
A button in a CDialogBar object is disabled automatically if the command routing does not contain a command handler function for the button.

To enable a button in a CDialogBar object, the command routing must include a command handler for the button. A button command handler can be an ON_BN_CLICKED(), ON_COMMAND(), or ON_COMMAND_UI() message handler and it must appear in the message map of an object in the command routing. If the parent of the CDialogBar object is a CFrameWnd object, then the command is handled by the active child window or view, by the document attached to the view, by the frame window, and by the application (CWinApp object).

NOTE: Because the CDialogBar object is not included in the routing scheme, the ON_BN_CLICKED() or ON_COMMAND() handler must be placed in one of the objects mentioned above that is in the routing scheme and not in the CDialogBar class.

For more information on command routing, see the "Command Routing" section in Chapter 3 of the "Class Library Reference" manual. In Visual C++ 32-bit Edition, version 4.0, see both the "Command Routing" topic of the "Programming with MFC: Overview" in the Books Online and the MFC Technical Note 31, Control Bars.
--------------------------------------------------------------------------------

http://www.kbalertz.com/kb_98198.aspx[^]

Disable the horizontal scroll bar in list

laiju30-Jul-05 6:45

laiju

30-Jul-05 6:45

How can i disable the horizontal scroll bar at run time.

laiju

HKEY to string

Chintoo72330-Jul-05 3:47

Chintoo723

30-Jul-05 3:47

I havent got any useful hits from google, does anyone here know how to obtain the string representation of an HKEY? Note that HKEY can be any key and not just the top level keys. Thanks!

Obtaining an Application's Folder

rbrunton30-Jul-05 2:33

rbrunton

30-Jul-05 2:33

I am using MFC and want to know the application folder (typically, but not necessarily "C:\Program Files\MyProgram") so I can read and save an initialization file for the program. A program that uses the main() function, arg[0] is usually the program's command line with subsequent arg[n] being the additional command line parameters. CWinApp does not appear to provide this information and I have looked through the help files and the CodeProject message board without success.

Any help would be greatly appreciated.

TIA

Ron

Re: Obtaining an Application's Folder

Scozturk30-Jul-05 3:06

Scozturk

30-Jul-05 3:06

Well I dont use MFC I only know the API way so:
you can get it like this:

[code]
char path[_MAX_PATH];
GetModuleFileName(GetModuleHandle(NULL), path, _MAX_PATH );
[/code]
Path holds the full address of your exe like "C:\Program Files\Program\test.exe"
just delete text.exe from it and its done...

Well... I am a beginner ...

Re: Obtaining an Application's Folder

Jack Puppy30-Jul-05 3:46

Jack Puppy

30-Jul-05 3:46

You might want to check this article out. (in particular, the last 3/4 topics)

How To Write a Windows XP Application That Stores User and Application Data in the Correct Location by Using Visual C++ .NET

You could run into access problems when users run the app from a limited account in the Program Files\App folder.

Painted on the side of a dog trainer's van: SIT HAPPENS

Re: Obtaining an Application's Folder

ThatsAlok30-Jul-05 3:51

ThatsAlok

30-Jul-05 3:51

Check if this code is of any help :-

//=========================<br />
 // Get Current Path<br />
 //=========================<br />
 CString szCurrentDirectory;<br />
 {<br />
 CString csPath;<br />
  <br />
  //====================<br />
  // Get File Path<br />
  //====================<br />
  <br />
  ::GetModuleFileName(NULL,csPath.GetBuffer(MAX_PATH),MAX_PATH);<br />
  <br />
  csPath.ReleaseBuffer();<br />
<br />
   //====================<br />
   //Get current Directory<br />
   //====================<br />
       szCurrentDirectory=csPath.Left(csPath.ReverseFind('\\'));<br />
<br />
 }

"Opinions are neither right nor wrong. I cannot change your opinion. I can, however, change what influences your opinion." - David Crow

cheers,
Alok Gupta
VC Forum Q&A :- I/ IV

Re: Obtaining an Application's Folder

rbrunton30-Jul-05 10:42

rbrunton

30-Jul-05 10:42

Thanks to all who responded. Problem solved!
Ron

Disk devices count and NIC card count

pradeepchinnasamy30-Jul-05 2:20

pradeepchinnasamy

30-Jul-05 2:20

:->
I need to Know how many number of disk devices and NIC cards are present in a system (through wmi classes).

how can i access this information.

Pradeep

GDI+ Image clone

Hesham Desouky30-Jul-05 1:52

Hesham Desouky

30-Jul-05 1:52

Hi all
Will I am using GDI+ to manipulate images.
I am having this strange behaviour with Bitmap::Clone() function.

When I create a Clone from an Image object, and then try to LockBits for the cloned image, I get invalid pointer.

I did a workarround for this:

Bitmap* p_new_image = new Bitmap(p_src_image->GetWidth(),p_src_image->GetHeight(),p_src_image->GetPixlFormat());

Graphics* p_graphics = Graphics::FromImage(p_new_image);

p_graphics->DrawImage(p_src_image,0,0);

delete p_graphics;

will this code is working with LockBits very fine.

The documentation for the clone function is not clear, is this a bug in the Clone function, or I didnt understad the Clone function will?

Regards

Hesahm

Hesham

ListView background item color and .exe.manifest file

int01h30-Jul-05 1:28

int01h

30-Jul-05 1:28

Hi guys,
i've implemented an manifest file to my app with following info:

---[cut here]---

<?xml version="1.0" encoding="UTF-8" standalone="yes"?><br />
<assembly xmlns="urn:schemas-microsoft-com:asm.v1" manifestVersion="1.0"><br />
<assemblyIdentity<br />
    version="1.0.0.0"<br />
    processorArchitecture="X86"<br />
    name="SETUP.EXE"<br />
    type="win32"<br />
/><br />
<description>APPLICATIONNAME</description><br />
<dependency><br />
    <dependentAssembly><br />
        <assemblyIdentity<br />
            type="win32"<br />
            name="Microsoft.Windows.Common-Controls"<br />
            version="6.0.0.0"<br />
            processorArchitecture="X86"<br />
            publicKeyToken="6595b64144ccf1df"<br />
            language="*"<br />
        /><br />
    </dependentAssembly><br />
</dependency><br />
</assembly>

Since then, my listview doesn't accept item background colours i apply using:

if(lplvcd->nmcd.lItemlParam==1){  //obserwowane<br />
       lplvcd->clrText   = RGB(0,0,0);<br />
       lplvcd->clrTextBk = RGB(240,240,255);<br />
        }<br />

When i remove manifest, all looks okay, but when i apply it again - colours are missing.

Any idea ?

Regards,Paul.

Source Control (SCC) Icons on VC++ 6.0

Axter30-Jul-05 1:26

Axter

30-Jul-05 1:26

I have both VC++ 6.0 and VC++ 7.1, and I notice that my 7.1 version has icons for source control that indicates when a file is locked by another user VS locked by the current user.
Where as VC++ 6.0 only has an icon showing it's locked.
See following screen shot:
http://code.axter.com/SCC_for_vc71_and_vc60.JPG

I'm developing an SCC AddOn for VC++, and I want to know if there is any way of adding the blue lock icon to VC++ 6.0, and if so, how.

I tried using Spy++ to find the tree window handle, but didn't have much luck.

I appreciate any leads to help solve this.

Thanks

Top ten member of C++ Expert Exchange.
http://www.experts-exchange.com/Cplusplus

please help me

sebinfrancis30-Jul-05 1:00

sebinfrancis

30-Jul-05 1:00

ompiling...
MP3PLAYERDlg.cpp
Linking...
MP3PLAYERDlg.obj : error LNK2001: unresolved external symbol "public: class CBasePin * __thiscall CAsyncReader::GetPin(int)" (?GetPin@CAsyncReader@@QAEPAVCBasePin@@H@Z)
MP3PLAYERDlg.obj : error LNK2001: unresolved external symbol "public: virtual int __thiscall CAsyncReader::GetPinCount(void)" (?GetPinCount@CAsyncReader@@UAEHXZ)
MP3PLAYERDlg.obj : error LNK2001: unresolved external symbol "public: virtual unsigned long __stdcall CBaseFilter::NonDelegatingRelease(void)" (?NonDelegatingRelease@CBaseFilter@@UAGKXZ)
MP3PLAYERDlg.obj : error LNK2001: unresolved external symbol "public: virtual __thiscall CAsyncReader::~CAsyncReader(void)" (??1CAsyncReader@@UAE@XZ)
MP3PLAYERDlg.obj : error LNK2001: unresolved external symbol "public: __thiscall CAsyncReader::CAsyncReader(char *,struct IUnknown *,class CAsyncStream *,long *)" (??0CAsyncReader@@QAE@PADPAUIUnknown@@PAVCAsyncStream@@PAJ@Z)
strmbasd.lib(dllsetup.obj) : error LNK2001: unresolved external symbol "class CFactoryTemplate * g_Templates" (?g_Templates@@3PAVCFactoryTemplate@@A)
strmbasd.lib(dllentry.obj) : error LNK2001: unresolved external symbol "class CFactoryTemplate * g_Templates" (?g_Templates@@3PAVCFactoryTemplate@@A)
strmbasd.lib(dllsetup.obj) : error LNK2001: unresolved external symbol "int g_cTemplates" (?g_cTemplates@@3HA)
strmbasd.lib(dllentry.obj) : error LNK2001: unresolved external symbol "int g_cTemplates" (?g_cTemplates@@3HA)
Debug/MP3PLAYER.exe : fatal error LNK1120: 7 unresolved externals
Error executing link.exe.

MP3PLAYER.exe - 10 error(s), 0 warning(s)
these are the errors i have got when i tried to execute my project....i am doing a project to create an mp3 player
which reads the file bit by bit.....
i am beginneer...i know little about vc++.
so give me a detailed description....
included libraries are strmbasd.lib Vfw32.lib winmm.lib ....
i am using the memfile in directx8 to read data bit by bit..

please give me a solution... if any explanation needed please ask me... Sigh | :sigh:

sebin

Re: please help me

toxcct30-Jul-05 3:26

toxcct

30-Jul-05 3:26

sebinfrancis wrote:
these are the errors i have got when i tried to execute my project

wrong. these error happened when trying to link the compiled object files of your project.

sebinfrancis wrote:
so give me a detailed description....

select one error in the output window where you quoted this, and puch F1... msdn exist for that...

ok, now, what does the error say ?
let's take the first one :

MP3PLAYERDlg.obj : 
     error LNK2001: 
     unresolved external symbol "public: class CBasePin * __thiscall CAsyncReader::GetPin(int)"

the linker says that there is a call to the member function CAsyncReader::GetPin(int) into MP3PlayerDlg.obj (see the corresponding .cpp file), but it doesn't know such a function...
and all the errors you get are of this style...

so, did you well #include the headers ?

TOXCCT >>> GEII power
[toxcct][VisualCalc]

Reliable date and time of Windows startup

johannks30-Jul-05 0:11

johannks

30-Jul-05 0:11

Hi there

I need to find a way to reliably detect the date and time of the last startup/reboot of Windows.

I have found some information that could be used on Win95, Win98, and WinME platforms (checking the date and time of the registry backup files c:\windows\system.da0 and c:\windows\user.da0, or the last accessed time of autoexec.bat).

Is there a similar method that works on all versions of Windows? If not, is there a similar method on WinNT, Win2k, and WinXP?

Cheers,
Johan

Re: Reliable date and time of Windows startup

Garth J Lancaster30-Jul-05 1:39

Garth J Lancaster

30-Jul-05 1:39

Johan - I'm pretty sure for WinNT, Win2k, WinXP you can query a PDH (Performance Data Helper) Value called 'System Up Time', but I dont have any code here to prove it

Garth

Reply # 2

Garth J Lancaster30-Jul-05 1:50

Garth J Lancaster

30-Jul-05 1:50

This may help - the author queries the value in his code

http://www.codeproject.com/w2k/winuptime.asp[^]

'G'

Re: Reliable date and time of Windows startup

pradeepchinnasamy30-Jul-05 2:09

pradeepchinnasamy

30-Jul-05 2:09

Yes there is a gettickcount() function to calculate the uptime
i think it will return the values in seconds. you can calculate it
accordingly.

any further details refer WMI classes in msdn

Pradeep

Re: Reliable date and time of Windows startup

User 1278230-Jul-05 12:36

User 12782

30-Jul-05 12:36

Milliseconds actually.

This will be the simplist, most universal approach, though the DWORD counter will rollover every 49.7 days, so you'll have to take that into account.

modified 12-Jul-20 21:01pm.

Re: Reliable date and time of Windows startup

Alexander ^M.,1-Aug-05 1:21

Alexander ^M.,

1-Aug-05 1:21

QueryPerformanceCounter and QueryPerformanceFrequency will help. They have a roll-over that is much much more than 49 days.

Don't try it, just do it! Wink | ;-)

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