how can i do it? - C / C++ / MFC Discussion Boards

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Re: Copy & Paste in CView derived classes

Tomasz Sowinski2-Aug-02 1:06

Tomasz Sowinski

2-Aug-02 1:06

Anonymous wrote:
The document content is just plain text.

You may consider switching to CEditView or CRichEditView then.

Tomasz Sowinski -- http://www.shooltz.com

What is "scratch" and why can everything be made from it?

Executing DOS program from VC++

a3gupta1-Aug-02 21:27

a3gupta

1-Aug-02 21:27

Hello,
I am writing a dialog based application in VC++ 6.0.
I need to execute a dos program at one point in the program and use the file generated by the DOS program. Please tell me if you know how to execute a DOS program from my VC++ code. Thanks !!
I really appreciate your input on this.
Thanks you!

Sincerely,
Anjum.

Re: Executing DOS program from VC++

Daniel Lohmann1-Aug-02 21:57

Daniel Lohmann

1-Aug-02 21:57

Still using old 16bit DOS apps? Puh! Sleepy | :zzz:

However, a 16bit app is started as any other app either using ShellExecute(Ex)() or CreateProcess() APIs.

--

Daniel Lohmann

http://www.losoft.de
(Hey, this page is worth looking! You can find some free and handy NT tools there Big Grin | :-D

)

Colored Controls

a3gupta1-Aug-02 21:03

a3gupta

1-Aug-02 21:03

Hello,

I am writing a dialog based application using VC++ 6.0. It is almost complete. Now I need to change the color of all the dialog boxes and all the buttons on it from normal Grey to Some other color. I am using the funtion SetDialogBkColor() in my initInstance to change the background color .. but all the buttons etc. remain grey. Pleas suggest a way that I can change the color of all the buttons to something other color other than grey.
I really appreciate your effor in solving this problem.
Thanks!

Sincerely,
anjum.

Re: Colored Controls

Roman Nurik1-Aug-02 21:26

Roman Nurik

1-Aug-02 21:26

the standard window buttons can't be changed in color... however they can be owner-drawn... check some articles on this site ... Controls - Buttons for example, is a section which contains lots of good info on this subject

- Roman -

Reading unicode strings from a file..

Neha1-Aug-02 20:57

Neha

1-Aug-02 20:57

Hi,
How can i read the unicode string from a file line by line?
Text contents will be something like this:
English string chines string

Thanks
Neha

Re: Reading unicode strings from a file..

Roman Nurik1-Aug-02 21:25

Roman Nurik

1-Aug-02 21:25

first you check the first two bytes of the file... if they are 0xFF and 0xFE, respectively, the file is little endian unicode... meaning that every character in the string is two bytes and that the value (up to 65535) is a little endian "short"... if the first two bytes are 0xFE and 0xFF then the file is big endian unicode, meaning that each character is a big endian "short" value... if the first two bytes are anything else, it's not unicode

NOTE: i'm not sure about UTF-8, i never figured out the byte pattern for that format

- Roman -

how can i do it?

whelk1-Aug-02 20:54

whelk

1-Aug-02 20:54

in my application ,i want to use edit control to input text
and i want to change the font of text in the edit control.
my quesion:how can i change the edit control's width and height
accoding to the font size?

thanks.

-----------------------------
Mr.Whelk
-----------------------------
Zhuhai City ,Guangdong ,China

Re: how can i do it?

Hydralisk1-Aug-02 21:34

Hydralisk

1-Aug-02 21:34

I think MoveWindow() can do this!
In vckbase I also found your question! Blush | :O

Crash in Relese Build

Ravi Jadhav1-Aug-02 20:50

Ravi Jadhav

1-Aug-02 20:50

In release build my exe is crashing while invoking a dialog, its crashing in ::CreateDialogIndirect() function. Cry | :((

Can anybody help me.

I got two Extention dlls, one DllOne.dll and another DllTwo.dll. I am handling menu clicks into DllOne.dll's mainfrm.cpp. into a function called Fun1(). In Fun1() i am trying to invoke a dialog from DllTwo.dll. There are two Dialogs into DllTwo.dll, For first Dialog its working fine in Release Build but the second one is not working (crashing into CreateDialogIndirect()). Both of these dialogs are working perfect in Deug build. Please Help

Thanks

Re: Crash in Relese Build

Roman Nurik1-Aug-02 21:22

Roman Nurik

1-Aug-02 21:22

supply us with some more info or just debug it (put a break point on it)

- Roman -

Re: Crash in Relese Build

Ravi Jadhav1-Aug-02 21:52

Ravi Jadhav

1-Aug-02 21:52

I got one extension dll, with its own resources. It is having two dialog into its resource. i am invoing these two dialogs on menu click. I handled it in mainfrm.cpp. Its not at all giving any problem to first dialog invocation but it is crashing in second dialog invocation.

Re: Crash in Relese Build

[James Pullicino]1-Aug-02 23:40

[James Pullicino]

1-Aug-02 23:40

Maybe AFXManageState might help?

Drinking In The Sun
Forgot Password?

Re: Crash in Relese Build

Ravi Jadhav2-Aug-02 0:54

Ravi Jadhav

2-Aug-02 0:54

tried AFX_MANAGE_STATE also.. Not Working

I got two Extention dlls, one DllOne.dll and another DllTwo.dll. I am handling menu clicks into DllOne.dll's mainfrm.cpp. into a function called Fun1(). In Fun1() i am trying to invoke a dialog from DllTwo.dll. There are two Dialogs into DllTwo.dll, For first Dialog its working fine in Release Build but the second one is not working (crashing into CreateDialogIndirect()). Both of these dialogs are working perfect in Deug build. Please Help

Re: Crash in Relese Build

[James Pullicino]2-Aug-02 3:08

[James Pullicino]

2-Aug-02 3:08

Maybe you're using a mix of release and debug builds? Have you tried recompiling ALL of your DLLs in release mode?

Drinking In The Sun
Forgot Password?

Re: Crash in Relese Build

Anonymous2-Aug-02 6:13

Anonymous

2-Aug-02 6:13

Try using AFX_MANAGE_STATE(AfxGetStaticModuleState()); at the beginning of the dll function in which you are aceessing the dialog.

Help Needed - ADO RDS

Praveena1-Aug-02 20:45

Praveena

1-Aug-02 20:45

Hi all,

I am accessing remote database by using ADO RDS. I am accessing Oracle database. I am getting an error message Object/Module not found. Pl can anyone help me where i am getting the problem. I am enclosing the source code of the prg. Its was the sample prg given in MSDN. I have modified according to my requirements i.e modified the server name,dsn,username.

Its there any other alternative to access remote database other than ADO RTS.

I am getting the exception in this statement.
/*****************
hr = _com_dispatch_method(pDF, dispids[0], DISPATCH_METHOD,VT_DISPATCH, (void*) &tempPtr, L"\x0008x0008\x0003",(BSTR) bstrConnect, (BSTR)bstrSQL, 0L);

**********************/

Pl. help me. Its very urgent.

#include <stdio.h>
#include <tchar.h>
#include <objbase.h>

#import "c:\program files\common files\system\ado\msado15.dll" rename("EOF", "adoEOF") rename("BOF", "adoBOF")
#import "c:\program files\common files\system\msadc\msadco.dll"
#import "c:\program files\common files\system\msadc\msadcf.dll"

#pragma warning(disable:4786; disable:4715)

const int MAX_FIELDS = 10; // Max # of Fields

HRESULT InitDataSpace(RDS::IDataspacePtr& pDS);
HRESULT InitDataFactory(RDS::IDataspacePtr pDS, _bstr_t Server, IDispatchPtr& pIDF);
HRESULT GetDISPID( DISPID& dspid, LPOLESTR FunctionName, IDispatch * obj);
HRESULT GetSRVset(ADODB::_RecordsetPtr& pRS, _bstr_t Server, _bstr_t ConnectStr, _bstr_t SQLStr);
HRESULT FlushChanges(IDispatchPtr& pIDF, DISPID funcID, _bstr_t ConnectStr, ADODB::_RecordsetPtr pRS);
void ReadRecordset(ADODB::_RecordsetPtr pRecordset);
void AddRecord(_variant_t FieldValues[], short iFieldCount, ADODB::_RecordsetPtr pRecordset);

extern "C" int WINAPI
_tWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPTSTR lpCmdLine, int nCmdShow)
{
HRESULT hResult = CoInitialize(NULL);

ADODB::_RecordsetPtr Authors;

_bstr_t bstrServer;
_bstr_t bstrConnect;
_bstr_t bstrSQL;

_variant_t Values[4]; // Holds data for AddRec

RDS::IDataspacePtr pDS;
IDispatchPtr pIDF; // Will hold Data Factory Object
DISPID SubmitChanges; // DISPID for the function

bstrServer = "http://god";
bstrConnect = " Provider=MSDAORA;dsn=newestudy;uid=estudy;pwd=estu
dy;";

bstrSQL = "Select INSPASSWD from insapplicants";

HRESULT hrResult;

// Get the DISPID for SubmitChanges
hrResult = InitDataSpace(pDS);
hrResult = InitDataFactory(pDS, bstrServer, pIDF);
LPOLESTR FName = {OLESTR("SubmitChanges")};
hrResult = GetDISPID( SubmitChanges, FName, pIDF);

// Get the Recordset
hrResult = GetSRVset( Authors, bstrServer, bstrConnect, bstrSQL);

// Read the Recordset
ReadRecordset(Authors);

pIDF.Release();
pDS.Release();
Authors->Close();
Authors.Release();

CoUninitialize();
return 0;
}

void dump_com_error(_com_error &e)
{
printf(_T("Exception!\n"));
printf(_T("\a\tCode = %08lx\n"), e.Error());
printf(_T("\a\tCode meaning = %s\n"), e.ErrorMessage());
printf(_T("\a\tSource = %s\n"), (LPCTSTR) e.Source());
printf(_T("\a\tDescription = %s\n"), (LPCTSTR) e.Description());

}

HRESULT InitDataFactory(RDS::IDataspacePtr pDS, _bstr_t bstrServer, IDispatchPtr& pIDF)
{

HRESULT HR;
_variant_t Result;

try
{
Result = pDS->CreateObject(_bstr_t ("RDSSERVER.DataFactory"), bstrServer);
HR = Result.pdispVal->QueryInterface(_uuidof(IDispatch), (LPVOID *)&pIDF);
}
catch (_com_error &e)
{
MessageBox(NULL,e.ErrorMessage(),"",0);
printf(_T("Exception!\n"));
printf(_T("\a\tCode = %08lx\n"), e.Error());
printf(_T("\a\tCode meaning = %s\n"), e.ErrorMessage());
printf(_T("\a\tSource = %s\n"), (LPCTSTR) e.Source());
printf(_T("\a\tDescription = %s\n"), (LPCTSTR) e.Description());
dump_com_error(e);
}

return HR;

}

HRESULT InitDataSpace(RDS::IDataspacePtr& pDS)
{
// This function inputs a pointer, and then initializes it
HRESULT hr;
hr = pDS.CreateInstance(_uuidof(RDS:ataSpace));
return hr;
}

HRESULT GetDISPID( DISPID& dispid, LPOLESTR FunctionName, IDispatch * obj)
{
HRESULT hr;
hr = obj->GetIDsOfNames(IID_NULL, &FunctionName, 1, LOCALE_SYSTEM_DEFAULT, &dispid);
return hr;

}

HRESULT FlushChanges(IDispatchPtr& pIDF, DISPID funcID, _bstr_t ConnectStr, ADODB::_RecordsetPtr pRS)
{
HRESULT hr;

try
{

hr = _com_dispatch_method(pIDF, funcID, DISPATCH_METHOD,
NULL, NULL, L"\x0008\x0009",
(BSTR) ConnectStr, (IDispatch *) pRS);

}
catch (_com_error &e)
{
dump_com_error(e);
}

return hr;
}

HRESULT GetSRVset(ADODB::_RecordsetPtr& pRS, _bstr_t bstrServer, _bstr_t bstrConnect, _bstr_t bstrSQL)
{

HRESULT hr;
RDS::IDataspacePtr pDS;
IDispatchPtr pDF; // Used for the DataFactory
IDispatch * tempPtr;
_variant_t Result;
try
{

hr = pDS.CreateInstance(_uuidof(RDS:ataSpace));
Result = pDS->CreateObject(_bstr_t ("RDSSERVER.DataFactory"), bstrServer);
hr = Result.pdispVal->QueryInterface(_uuidof(IDispatch), (LPVOID *) &pDF);

LPOLESTR Funky[1] = {OLESTR("Query")}; // name of the function to call
DISPID dispids[1]; // will hold the DISPID for the function
hr = pDF->GetIDsOfNames(IID_NULL, Funky, 1, LOCALE_SYSTEM_DEFAULT, dispids);

hr = _com_dispatch_method(pDF, dispids[0], DISPATCH_METHOD,
VT_DISPATCH, (void*) &tempPtr, L"\x0008\x0008\x0003",
(BSTR) bstrConnect, (BSTR)bstrSQL, 0L);

tempPtr->Release();

return hr;

}
catch (_com_error &e)
{ MessageBox(NULL,e.ErrorMessage(),"",0);
dump_com_error(e);
}
}

void AddRecord(_variant_t FieldValues[], short iFieldCount, ADODB::_RecordsetPtr pRecordset)
{
pRecordset->AddNew();
for (short i = 0; i < iFieldCount; i++)
{
pRecordset->Fields->Item[i]->Value = FieldValues[i];
}
}

void ReadRecordset(ADODB::_RecordsetPtr pRecordset)
{
pRecordset->MoveFirst();
while (!pRecordset->adoEOF)
{
for (short i = 0; i < pRecordset->Fields->Count; i++)
{
_bstr_t bstrName = pRecordset->Fields->Item[i]->Name;
_variant_t varValue = pRecordset->Fields->Item[i]->Value;
LPCTSTR lpszName = (LPCTSTR) bstrName;
_bstr_t bstrValue(varValue);
LPCTSTR lpszValue = (LPCTSTR) bstrValue;
if(i==0)
_tprintf(_T("\n"));
_tprintf(_T("%s: %s\n"), lpszName, lpszValue);
}

pRecordset->MoveNext();
}
}

Regards,
Praveena

Smile a while to keep your sorrow a mile

Is legal to use Windows icons?

Joan M1-Aug-02 19:14

Joan M

1-Aug-02 19:14

Hello,

I have never given any beautiful look to my apps. since they are used to move machines and to control their movements.

Now that I have some time I would do it, but I don't know if I can use icons from the Microsoft library "SHELL32.dll" and so others...

Is it legal to use them?

best regards.

Detecting the Closest Point to a Region's Edge

Swinefeaster1-Aug-02 16:59

Swinefeaster

1-Aug-02 16:59

I have a windows gdi region (or even a gdi+ region) and I am trying to determine an intersection point on its edge from a line constructed between the region's centre and another point outside of the region. Is this possible?

I know there are functions to determine whether or not a point lies within a region or not, but this only leaves me with the brute force method. I could iterate pixel by pixel from the outlying point up to the region's centre point until ::PtInRegion() changes from returning true to returning false. But this seems rather innefficient.

Please help!

Thankx,

swine

Check out Aephid Photokeeper, the powerful digital
photo album solution at www.aephid.com.

Re: Detecting the Closest Point to a Region's Edge

PJ Arends1-Aug-02 17:16

PJ Arends

1-Aug-02 17:16

check this link, it may be of some help:

http://www.codeproject.com/script/comments/forums.asp?msg=144239&forumid=1647#xx144239xx

CPUA 0x5041

Sonork 100.11743 Chicken Little

"So it can now be written in stone as a testament to humanities achievments "PJ did Pi at CP"." Colin Davies

Within you lies the power for good - Use it!

Re: Detecting the Closest Point to a Region's Edge

Swinefeaster1-Aug-02 18:01

Swinefeaster

1-Aug-02 18:01

Thanks but that's the easy part! Smile | :)

The hard part is to do it with any given region (this includes regions with curves and diagonal lines, etcetera)...

swine

Check out Aephid Photokeeper, the powerful digital
photo album solution at www.aephid.com.

Show file property dialog box

Jonatan Dahl1-Aug-02 16:58

Jonatan Dahl

1-Aug-02 16:58

Hi!

How can I show the property dialog box of any file from my program?

I know there´s a method using ShellExecuteEx() but I can´t get it to work.

/Jii

Re: Show file property dialog box

Ernest Laurentin1-Aug-02 18:49

Ernest Laurentin

1-Aug-02 18:49

Try this:

SHELLEXECUTEINFO sei;
ZeroMemory(&sei,sizeof(sei));
sei.cbSize = sizeof(sei);
sei.hwnd = m_hWnd; // Handle of your window or AfxGetMainWnd()->GetSafeHwnd()
sei.nShow = SW_SHOW;
sei.lpFile = sFilename; // this is a TCHAR buffer
sei.lpVerb = _T("properties");
sei.fMask  = SEE_MASK_INVOKEIDLIST;
ShellExecuteEx(&sei);

As my daughter would say, "... Whatever!"

Re: Show file property dialog box

Jonatan Dahl2-Aug-02 1:12

Jonatan Dahl

2-Aug-02 1:12

Thanks, it worked just fine!

Is there a way to set which tab of the property dialog box that´ll be selected when launched?

/Jii

Accessing Version information

Stew1-Aug-02 15:48

Stew

1-Aug-02 15:48

How do I get at the information that is entered in VS_VERSION_INFO in a VC++ app? I'm trying to get the information for my About Dialog and am having trouble getting at the information that I have entered there.

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