C / C++ / MFC

10-Apr-06 4:59

I have two edit controls named "name" and "location". when i enter a text in "name" edit control it shud be appended to "location" edit control.

Ex..

name : Hello
Location : c:\Desktop Search\Hello

here when the text "hello" is entered in "name" edit control,it shud be simultaneously appended with "location" edit control as shown in the example. pls help.

thanks

Hamid_RT10-Apr-06 5:26

Hamid_RT

10-Apr-06 5:26

Hi sudeep_br
Name.GetWindowText(for read from Name)
Location.SetWindowText(write to Lication)

// like this
CEdit m_Edit1,m_Edit2;
CString Str,str="c:\\Desktop Search\\";

m_Edit1.GetWindowText(Str);

str.Insert(str.GetLength(),Str);

m_Edit2.SetWindowText(str);

sudeep_br10-Apr-06 19:48

10-Apr-06 19:48

i have two edit controls named "name" and "location". i also have a button called "folder select" using which users can select folders from different drives and assign it to location edit box. Theres also a "OK" button

The followind is the code i have put along with the code u provided:-

#include "stdafx.h"
#include "DesktopSearch.h"
#include "CreateDlg.h"
#include "UpdateDlg.h"
#include "FoldersDialog.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CCreateDlg dialog

CCreateDlg::CCreateDlg(CWnd* pParent /*=NULL*/)
: CDialog(CCreateDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CCreateDlg)
m_summary = -1;
//}}AFX_DATA_INIT
}

void CCreateDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CCreateDlg)
DDX_Control(pDX, IDC_FolderSelect, m_FolderSelect);
DDX_Control(pDX, IDC_Enter_Location, m_Enter_Location);
DDX_Control(pDX, IDC_Enter_Name, m_name);
DDX_Control(pDX, IDC_OK, m_ok);
DDX_Radio(pDX, IDC_Summary_only, m_summary);
//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCreateDlg, CDialog)
//{{AFX_MSG_MAP(CCreateDlg)
ON_BN_CLICKED(IDC_FolderSelect, OnFolderSelect)
ON_BN_CLICKED(IDC_OK, OnOk)
ON_BN_CLICKED(IDC_Cancel, OnCancel)
ON_EN_CHANGE(IDC_Enter_Name, OnChangeEnterName)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCreateDlg message handlers
extern TCHAR szDir[MAX_PATH];

void CCreateDlg::OnFolderSelect()
{
// TODO: Add your control notification handler code here

UpdateData(TRUE);
HWND hWnd = GetSafeHwnd();
CFoldersDialog objFD;
objFD.BrowseFolder(hWnd,m_Enter_Location);
m_Enter_Location = szDir;
UpdateData(FALSE);
}

void CCreateDlg::OnOk()
{
// TODO: Add your control notification handler code here

int iResults; // This variable will capture the button selection

// Ask the user

iResults = MessageBox("Would u like to add documetns to the index now",
"Desktop Search",MB_YESNO | MB_ICONQUESTION);

// Determine which button the user clicked
// Give the user a message showing which button was clicked

switch (iResults)
{
case IDYES: // The Yes button?
//call the Update dialog window if user press yes
m_dUpdateDlg.DoModal ();

break;
case IDNO: // The No button?

OnOK();
break;
}

}

void CCreateDlg::OnCancel()
{
code here
OnOK();
}
BOOL CCreateDlg::OnInitDialog()
{
CDialog::OnInitDialog();

UpdateData(FALSE);

CButton *pButton = (CButton*)this->GetDlgItem(IDC_OK);
pButton->EnableWindow(FALSE);
GotoDlgCtrl(GetDlgItem(IDC_OK));
return TRUE;

}

void CCreateDlg::OnChangeEnterName()
{

CButton *pButton = (CButton*)this->GetDlgItem(IDC_OK);
pButton->EnableWindow(TRUE);

CString Str,str="C:\\DesktopSearch\\Index\\";

m_name.GetWindowText(Str);

str.Insert(str.GetLength(),Str);

m_Enter_Location.SetWindowText(str);

}

The above code is giving 2 errors. both the edit control's variable typee is Cedit.

"error C2664: 'BrowseFolder' : cannot convert parameter 2 from 'class CEdit' to 'class CString'" and

"error C2582: 'CEdit' : 'operator =' function is unavailable"

pls help

Thanks

Hamid_RT11-Apr-06 1:14

Hamid_RT

11-Apr-06 1:14

Hi sudeep_br,
This is a sample,I hope that help you

CEdit m_Edit1,m_Edit2;
CString m_Test1;
CString m_Test2;

m_Edit1.Create(WS_CHILD|WS_VISIBLE,CRect(0,0,100,23),this,1);
m_Edit2.Create(WS_CHILD|WS_VISIBLE,CRect(0,50,100,23),this,1);

m_Test1="C:\\DesktopSearch\\Index\\";
m_Edit1.SetWindowText(m_Test1);//Now set this string to edit1

////////Now/////////
m_Edit1.GetWindowText(m_Test2);//Read from edit1 into m_Test2 that is CString

m_Edit2.SetWindowText(m_Test2);//Now set m_Test2 to m_Edit2

//if you test this code it's fine no problem in your code

1-objFD.BrowseFolder(hWnd,m_Enter_Location);

you assain class CEdit to this function,But this function need to CString yes?
unless m_Enter_Location is CEdit well you need to get string from this Control then assain
value to function BrowseFolder.

2-I think that problem is m_Enter_Location = szDir;
m_Enter_Location is variable control(CEdit) but szDir is TCHAR
you need to m_Enter_Location.SetWindowText(szDir);

Right?

sudeep_br12-Apr-06 21:34

12-Apr-06 21:34

this is the code i put based on ur suggestion

#include "stdafx.h"
#include "DesktopSearch.h"
#include "CreateDlg.h"
#include "UpdateDlg.h"
#include "FoldersDialog.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CCreateDlg dialog

CCreateDlg::CCreateDlg(CWnd* pParent /*=NULL*/)
: CDialog(CCreateDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CCreateDlg)
m_summary = -1;
//}}AFX_DATA_INIT
}

void CCreateDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CCreateDlg)
DDX_Control(pDX, IDC_FolderSelect, m_FolderSelect);
DDX_Control(pDX, IDC_Enter_Location, m_Enter_Location);
DDX_Control(pDX, IDC_Enter_Name, m_name);
DDX_Control(pDX, IDC_OK, m_ok);
DDX_Radio(pDX, IDC_Summary_only, m_summary);
//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCreateDlg, CDialog)
//{{AFX_MSG_MAP(CCreateDlg)
ON_BN_CLICKED(IDC_FolderSelect, OnFolderSelect)
ON_BN_CLICKED(IDC_OK, OnOk)
ON_BN_CLICKED(IDC_Cancel, OnCancel)
ON_EN_CHANGE(IDC_Enter_Name, OnChangeEnterName)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCreateDlg message handlers
extern TCHAR szDir[MAX_PATH];

void CCreateDlg::OnFolderSelect()
{
// TODO: Add your control notification handler code here

UpdateData(TRUE);
HWND hWnd = GetSafeHwnd();
CFoldersDialog objFD;

CString s1;
m_Enter_Location.GetWindowText(s1);
objFD.BrowseFolder(hWnd,s1);

m_Enter_Location.SetWindowText(szDir);

UpdateData(FALSE);
}

void CCreateDlg::OnOk()
{
// TODO: Add your control notification handler code here

int iResults; // This variable will capture the button selection

// Ask the user

iResults = MessageBox("Would u like to add documetns to the index now",
"Desktop Search",MB_YESNO | MB_ICONQUESTION);

// Determine which button the user clicked
// Give the user a message showing which button was clicked

switch (iResults)
{
case IDYES: // The Yes button?
//call the Update dialog window if user press yes
m_dUpdateDlg.DoModal ();

break;
case IDNO: // The No button?

OnOK();
break;
}

}

void CCreateDlg::OnCancel()
{
// TODO: Add your control notification handler code here
OnOK();
}

BOOL CCreateDlg::OnInitDialog()
{

CDialog::OnInitDialog();

// TODO: Add extra initialization here

// m_Enter_Location = "C:\\DesktopSearch\\Index\\";
UpdateData(FALSE);

CButton *pButton = (CButton*)this->GetDlgItem(IDC_OK);
pButton->EnableWindow(FALSE);
GotoDlgCtrl(GetDlgItem(IDC_OK));
return TRUE; // return TRUE unless you set the focus to a control
// EXCEPTION: OCX Property Pages should return FALSE
}

void CCreateDlg::OnChangeEnterName()
{

CButton *pButton = (CButton*)this->GetDlgItem(IDC_OK);
pButton->EnableWindow(TRUE);

CString m_Test1;
CString m_Test2;

//ERROR!!! IT SAYS CREATE CANNOT HAVE 4 PARAMETERS

m_ok.Create(WS_CHILD|WS_VISIBLE,CRect(0,0,100,23),this,1);
m_Enter_Location.Create(WS_CHILD|WS_VISIBLE,CRect(0,50,100,23),this,1);

m_Test1="C:\\DesktopSearch\\Index\\";
m_ok.SetWindowText(m_Test1);

m_ok.GetWindowText(m_Test2);
m_Enter_Location.SetWindowText(m_Test2);
}

for create it says create function cant have 4 parameters.

and to solve browsefolder problem i assigned a cstring object and passed it to browsefolder function(pls check the code)
during compilation it works fine. when i run it says "DEBUG ASSERTION FAILED"
what is wrong with my logic.pls check the code and let me know.

Thank you

Hamid_RT13-Apr-06 0:34

Hamid_RT

13-Apr-06 0:34

yes because you need to caption or NULL
m_ok.Create(WS_CHILD|WS_VISIBLE,CRect(0,0,100,23),this,1);
to
m_ok.Create(NULL or "text",WS_CHILD|WS_VISIBLE,CRect(0,0,100,23),this,1);

sudeep_br12-Apr-06 21:45

12-Apr-06 21:45

#include "stdafx.h"
#include "DesktopSearch.h"
#include "CreateDlg.h"
#include "UpdateDlg.h"
#include "FoldersDialog.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CCreateDlg dialog

CCreateDlg::CCreateDlg(CWnd* pParent /*=NULL*/)
: CDialog(CCreateDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CCreateDlg)
m_summary = -1;
//}}AFX_DATA_INIT
}

void CCreateDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CCreateDlg)
DDX_Control(pDX, IDC_FolderSelect, m_FolderSelect);
DDX_Control(pDX, IDC_Enter_Location, m_Enter_Location);
DDX_Control(pDX, IDC_Enter_Name, m_name);
DDX_Control(pDX, IDC_OK, m_ok);
DDX_Radio(pDX, IDC_Summary_only, m_summary);
//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCreateDlg, CDialog)
//{{AFX_MSG_MAP(CCreateDlg)
ON_BN_CLICKED(IDC_FolderSelect, OnFolderSelect)
ON_BN_CLICKED(IDC_OK, OnOk)
ON_BN_CLICKED(IDC_Cancel, OnCancel)
ON_EN_CHANGE(IDC_Enter_Name, OnChangeEnterName)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCreateDlg message handlers
extern TCHAR szDir[MAX_PATH];

void CCreateDlg::OnFolderSelect()
{
// TODO: Add your control notification handler code here

UpdateData(TRUE);
HWND hWnd = GetSafeHwnd();
CFoldersDialog objFD;

CString s1;
m_Enter_Location.GetWindowText(s1);
objFD.BrowseFolder(hWnd,s1);

m_Enter_Location.SetWindowText(szDir);

UpdateData(FALSE);
}

void CCreateDlg::OnOk()
{
// TODO: Add your control notification handler code here

int iResults; // This variable will capture the button selection

// Ask the user

iResults = MessageBox("Would u like to add documetns to the index now",
"Desktop Search",MB_YESNO | MB_ICONQUESTION);

// Determine which button the user clicked
// Give the user a message showing which button was clicked

switch (iResults)
{
case IDYES: // The Yes button?
//call the Update dialog window if user press yes
m_dUpdateDlg.DoModal ();

break;
case IDNO: // The No button?

OnOK();
break;
}

}

void CCreateDlg::OnCancel()
{
// TODO: Add your control notification handler code here
OnOK();
}

BOOL CCreateDlg::OnInitDialog()
{

CDialog::OnInitDialog();

// TODO: Add extra initialization here

// m_Enter_Location = "C:\\DesktopSearch\\Index\\";
UpdateData(FALSE);

CButton *pButton = (CButton*)this->GetDlgItem(IDC_OK);
pButton->EnableWindow(FALSE);
GotoDlgCtrl(GetDlgItem(IDC_OK));
return TRUE; // return TRUE unless you set the focus to a control
// EXCEPTION: OCX Property Pages should return FALSE
}

void CCreateDlg::OnChangeEnterName()
{

CButton *pButton = (CButton*)this->GetDlgItem(IDC_OK);
pButton->EnableWindow(TRUE);

CString m_Test1;
CString m_Test2;

//ERROR!!! IT SAYS CREATE CANNOT HAVE 4 PARAMETERS

//m_ok.Create(WS_CHILD|WS_VISIBLE,CRect(0,0,100,23),this,1);
// m_Enter_Location.Create(WS_CHILD|WS_VISIBLE,CRect(0,50,100,23),this,1);

m_Test1="C:\\DesktopSearch\\Index\\";
m_ok.SetWindowText(m_Test1);

m_ok.GetWindowText(m_Test2);
m_Enter_Location.SetWindowText(m_Test2);

}

for create it says create function cant have 4 parameters.

and to solve browsefolder problem i assigned a cstring object and passed it to browsefolder function(pls check the code)
during compilation it works fine. when i run it says "DEBUG ASSERTION FAILED"
what is wrong with my logic.pls check the code and let me know.

Thanks

sudeep_br12-Apr-06 21:47

12-Apr-06 21:47

I made changes as per ur suggestion. the following is the code

#include "stdafx.h"
#include "DesktopSearch.h"
#include "CreateDlg.h"
#include "UpdateDlg.h"
#include "FoldersDialog.h"

#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif

/////////////////////////////////////////////////////////////////////////////
// CCreateDlg dialog

CCreateDlg::CCreateDlg(CWnd* pParent /*=NULL*/)
: CDialog(CCreateDlg::IDD, pParent)
{
//{{AFX_DATA_INIT(CCreateDlg)
m_summary = -1;
//}}AFX_DATA_INIT
}

void CCreateDlg::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
//{{AFX_DATA_MAP(CCreateDlg)
DDX_Control(pDX, IDC_FolderSelect, m_FolderSelect);
DDX_Control(pDX, IDC_Enter_Location, m_Enter_Location);
DDX_Control(pDX, IDC_Enter_Name, m_name);
DDX_Control(pDX, IDC_OK, m_ok);
DDX_Radio(pDX, IDC_Summary_only, m_summary);
//}}AFX_DATA_MAP
}

BEGIN_MESSAGE_MAP(CCreateDlg, CDialog)
//{{AFX_MSG_MAP(CCreateDlg)
ON_BN_CLICKED(IDC_FolderSelect, OnFolderSelect)
ON_BN_CLICKED(IDC_OK, OnOk)
ON_BN_CLICKED(IDC_Cancel, OnCancel)
ON_EN_CHANGE(IDC_Enter_Name, OnChangeEnterName)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()

/////////////////////////////////////////////////////////////////////////////
// CCreateDlg message handlers
extern TCHAR szDir[MAX_PATH];

void CCreateDlg::OnFolderSelect()
{
// TODO: Add your control notification handler code here

UpdateData(TRUE);
HWND hWnd = GetSafeHwnd();
CFoldersDialog objFD;

CString s1;
m_Enter_Location.GetWindowText(s1);
objFD.BrowseFolder(hWnd,s1);

m_Enter_Location.SetWindowText(szDir);

UpdateData(FALSE);
}

void CCreateDlg::OnOk()
{
// TODO: Add your control notification handler code here

int iResults; // This variable will capture the button selection

// Ask the user

iResults = MessageBox("Would u like to add documetns to the index now",
"Desktop Search",MB_YESNO | MB_ICONQUESTION);

// Determine which button the user clicked
// Give the user a message showing which button was clicked

switch (iResults)
{
case IDYES: // The Yes button?
//call the Update dialog window if user press yes
m_dUpdateDlg.DoModal ();

break;
case IDNO: // The No button?

OnOK();
break;
}

}

void CCreateDlg::OnCancel()
{
// TODO: Add your control notification handler code here
OnOK();
}

BOOL CCreateDlg::OnInitDialog()
{

CDialog::OnInitDialog();

// TODO: Add extra initialization here

// m_Enter_Location = "C:\\DesktopSearch\\Index\\";
UpdateData(FALSE);

CButton *pButton = (CButton*)this->GetDlgItem(IDC_OK);
pButton->EnableWindow(FALSE);
GotoDlgCtrl(GetDlgItem(IDC_OK));
return TRUE; // return TRUE unless you set the focus to a control
// EXCEPTION: OCX Property Pages should return FALSE
}

void CCreateDlg::OnChangeEnterName()
{

CButton *pButton = (CButton*)this->GetDlgItem(IDC_OK);
pButton->EnableWindow(TRUE);

CString m_Test1;
CString m_Test2;

//ERROR!!! IT SAYS CREATE CANNOT HAVE 4 PARAMETERS

//m_ok.Create(WS_CHILD|WS_VISIBLE,CRect(0,0,100,23),this,1);
// m_Enter_Location.Create(WS_CHILD|WS_VISIBLE,CRect(0,50,100,23),this,1);

m_Test1="C:\\DesktopSearch\\Index\\";
m_ok.SetWindowText(m_Test1);

m_ok.GetWindowText(m_Test2);
m_Enter_Location.SetWindowText(m_Test2);

}

for create it says create function cant have 4 parameters.

and to solve browsefolder problem i assigned a cstring object and passed it to browsefolder function(pls check the code)
during compilation it works fine. when i run it says "DEBUG ASSERTION FAILED"
what is wrong with my logic.pls check the code and let me know.

Thanks

-- modified at 3:48 Thursday 13th April, 2006

Iain Clarke, Warrior Programmer

Iain Clarke, Warrior Programmer10-Apr-06 5:58

10-Apr-06 5:58

If you add a EN_CHANGE handler for the first control, you can then read the changed text, put it on the end of location text, and update the location edit control.

ON_EN_CHANGE is the key you are looking for, I think.

Iain.

How to disable the system speaker control

ashwath200510-Apr-06 4:52

10-Apr-06 4:52

hi all,
I am using the following code to mute the speaker control.But i am not able to disable the speaker control.Can anyone please tell me how to do it.Disable in the sense that user should not be able to access the speaker control.

ashwath200510-Apr-06 4:55

10-Apr-06 4:55

Sorry ,i forgot to put the code.The code is as shown below::
MMRESULT result;
HMIXER hMixer;
result = mixerOpen(&hMixer, MIXER_OBJECTF_MIXER, 0, 0, 0);
//obtain a handle to the mixer device.

if(result!=MMSYSERR_NOERROR)
{
::MessageBox(NULL,"Mixer could not be opened","1",MB_OK);
return;
}

//we need to get the speaker line of the mixer device
MIXERLINE ml = {0};
ml.cbStruct = sizeof(MIXERLINE);
ml.dwComponentType = MIXERLINE_COMPONENTTYPE_DST_SPEAKERS;
result = mixerGetLineInfo((HMIXEROBJ) hMixer,&ml, MIXER_GETLINEINFOF_COMPONENTTYPE);

//we need to get the volume control of the speaker line.
MIXERLINECONTROLS mlc = {0};
MIXERCONTROL mc = {0};
mlc.cbStruct = sizeof(MIXERLINECONTROLS);
mlc.dwLineID = ml.dwLineID;
mlc.dwControlType = MIXERCONTROL_CONTROLTYPE_MUTE;
mlc.cControls = 1;
mlc.pamxctrl = &mc;
mlc.cbmxctrl = sizeof(MIXERCONTROL);
result = mixerGetLineControls((HMIXEROBJ)hMixer,
&mlc, MIXER_GETLINECONTROLSF_ONEBYTYPE);

//we set the mute and unmute values
MIXERCONTROLDETAILS mcd = {0};
MIXERCONTROLDETAILS_UNSIGNED mcdu = {0};
mcdu.dwValue = 65535; //0 for unmute and //65535 for mute.
mcd.cbStruct = sizeof(MIXERCONTROLDETAILS);
mcd.hwndOwner = 0;
mcd.dwControlID = mc.dwControlID;
mcd.paDetails = &mcdu;
mcd.cbDetails = sizeof(MIXERCONTROLDETAILS_UNSIGNED);
mcd.cChannels = 1;
result = mixerSetControlDetails((HMIXEROBJ)hMixer,
&mcd, MIXER_SETCONTROLDETAILSF_VALUE);

David Crow10-Apr-06 5:56

10-Apr-06 5:56

ashwath2005 wrote:
mcdu.dwValue = 65535; //0 for unmute and //65535 for mute.

Your comment is wrong.

So what's not working? What is the value of result?

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

ashwath200510-Apr-06 6:05

10-Apr-06 6:05

Sorry,Mute and Unmute are working fine.I have written the following code to disable the mute control,but it is not working.

MIXERCONTROL mc = {0};
mc.fdwControl=MIXERCONTROL_CONTROLF_DISABLED;

Please Help.

David Crow10-Apr-06 7:25

10-Apr-06 7:25

ashwath2005 wrote:
Please Help.

I'd like to but without knowing what those functions are returning, it's not possible.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

ashwath200510-Apr-06 19:46

10-Apr-06 19:46

hi,
I have written the following code for disabling the MUTE control,
MMRESULT result;
HMIXER hMixer;
result = mixerOpen(&hMixer, MIXER_OBJECTF_MIXER, 0, 0, 0);
//obtain a handle to the mixer device.

if(result!=MMSYSERR_NOERROR)
{
::MessageBox(NULL,"Mixer could not be opened","1",MB_OK);
}

//we need to get the speaker line of the mixer device
MIXERLINE ml = {0};
ml.cbStruct = sizeof(MIXERLINE);
ml.dwComponentType = MIXERLINE_COMPONENTTYPE_DST_SPEAKERS;
result = mixerGetLineInfo((HMIXEROBJ) hMixer,&ml, MIXER_GETLINEINFOF_COMPONENTTYPE);

if(result!=MMSYSERR_NOERROR)
{
::MessageBox(NULL,"mixerGetLineInfo failed","1",MB_OK);
}

//we need to get the volume control of the speaker line.
MIXERLINECONTROLS mlc = {0};
MIXERCONTROL mc={0};
mc.fdwControl=MIXERCONTROL_CONTROLF_DISABLED;

mlc.cbStruct = sizeof(MIXERLINECONTROLS);
mlc.dwLineID = ml.dwLineID;
mlc.dwControlType = MIXERCONTROL_CONTROLTYPE_MUTE;
mlc.cControls = 1;
mlc.pamxctrl = &mc;
mlc.cbmxctrl = sizeof(MIXERCONTROL);
result = mixerGetLineControls((HMIXEROBJ)hMixer,
&mlc, MIXER_GETLINECONTROLSF_ONEBYTYPE);

if(result!=MMSYSERR_NOERROR)
{
::MessageBox(NULL,"mixerGetLineControls failed","2",MB_OK);
}

//we set the mute and unmute values
MIXERCONTROLDETAILS mcd = {0};
MIXERCONTROLDETAILS_UNSIGNED mcdu = {0};
mcdu.dwValue =lVal; //0 for unmute and //65535 for mute.
mcd.cbStruct = sizeof(MIXERCONTROLDETAILS);
mcd.hwndOwner = 0;
mcd.dwControlID =mc.dwControlID;
mcd.paDetails = &mcdu;
mcd.cbDetails = sizeof(MIXERCONTROLDETAILS_UNSIGNED);
mcd.cChannels = 1;

result = mixerSetControlDetails((HMIXEROBJ)hMixer,
&mcd, MIXER_SETCONTROLDETAILSF_VALUE);
if(result!=MMSYSERR_NOERROR)
{
::MessageBox(NULL,"mixerSetControlDetails failed","3",MB_OK);
}

The above code does not disable the MUTE control.
I have checked all the return values,all of them return MMSYSERR_NOERROR as the return value.
Kindly help me to fix this problem.

David Crow11-Apr-06 2:49

11-Apr-06 2:49

ashwath2005 wrote:
Kindly help me to fix this problem.

What exactly are you expecting this code to do, disable the Mute all checkbox? If so, see here.

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

ashwath200511-Apr-06 3:57

11-Apr-06 3:57

Hi,
I want the code to GRAY the "Mute all" Check box so that user does not have access to it.

David Crow11-Apr-06 4:13

11-Apr-06 4:13

Then you'll need to get a handle to that control (id = 0x3e8) and call EnableWindow(FALSE).

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

ashwath200511-Apr-06 4:21

11-Apr-06 4:21

hi,
How should i get the handle to the control.Which API should i use.
Please Help
Thanks,

-- modified at 10:23 Tuesday 11th April, 2006

David Crow11-Apr-06 4:58

11-Apr-06 4:58

ashwath2005 wrote:
How should i get the handle to the control.Which API should i use.

Try FindWindow() and/or FindWindowEx().

"Let us be thankful for the fools. But for them the rest of us could not succeed." - Mark Twain

"There is no death, only a change of worlds." - Native American Proverb

ashwath200511-Apr-06 5:08

11-Apr-06 5:08

hi,
I used the following code to GRAY the "Mute all" check box,but it is not working.Is there any other method.

HWND hwnd1=::FindWindow(NULL,"Volume Control");
HWND hwnd=::GetDlgItem(hwnd1,0x3e8);
::EnableWindow(hwnd,FALSE);

David Crow11-Apr-06 5:13