C / C++ / MFC

Re: CreateProcess and Redirecting output

8-Aug-02 2:58

This article[^] may help.

/ravi

Let's put "civil" back into "civilization"
http://www.ravib.com
ravib@ravib.com

Dave_8-Aug-02 4:33

Dave_

8-Aug-02 4:33

Thank you. It's exactly what I needed.

Setting height in CComboBox dropdown list

Poul Haahr Klemmensen8-Aug-02 2:29

Poul Haahr Klemmensen

8-Aug-02 2:29

How do I set the height of the dropdown list in a CComboBox so that I can see more than one entry from the CComboBox ?

I also committed the crime of posting a programming question in the Lounge.

Re: Setting height in CComboBox dropdown list

Alberto Giannetto8-Aug-02 2:41

Alberto Giannetto

8-Aug-02 2:41

In the resource designer click on the drop-down arrow of the combobox; then drag the bottom down as if you want to enlarge it: that size is the actual extent of the portion of the list box associated to the combobox.

Alberto

Alberto Giannetto

Re: Setting height in CComboBox dropdown list

Poul Haahr Klemmensen8-Aug-02 2:45

Poul Haahr Klemmensen

8-Aug-02 2:45

Thanks a million Smile | :)

I also committed the crime of posting a programming question in the Lounge.

Multiline Tray Tooltip

Alberto Giannetto8-Aug-02 1:37

Alberto Giannetto

8-Aug-02 1:37

Hi all,

is there a way to display multiline tooltip on an icon in the system tray box under Win9x? The same multiline tooltip on W2K appears correctly on two lines; on W9x it has the obnoxious black 'squarelets' meaning no translation of carriage returns...
The only way I could find to manage system tray icons is via the Shell_NotifyIcon, which doesn't allow full control over the notification messages, except normal mouse and keyboard activity...

Thanks,

Alberto Giannetto

Re: Multiline Tray Tooltip

Ravi Bhavnani8-Aug-02 3:02

Re: Multiline Tray Tooltip

8-Aug-02 3:02

Perhaps this article[^] will help?

/ravi

Let's put "civil" back into "civilization"
http://www.ravib.com
ravib@ravib.com

Alberto Giannetto8-Aug-02 3:52

Alberto Giannetto

8-Aug-02 3:52

Interesting code surely, but I'm not sure it can help: how do I get full control over the ToolTip when, through Shell_NotifyIcon, all I have to do is just fill a NOTIFYICONDATA structure?

Albi

AppendChunk bombs

nss8-Aug-02 1:24

8-Aug-02 1:24

I am trying to put a blob into an access database into a field of type OLE OBJECT (hope its the right one, tried text as well just in case). I get the crash at AppendChunk:

// Function which creates a safe array 

 void BlobToVariant(VARIANT &varArray)
{
	      BYTE *pByte;
	
	      FILE* pFile ;


	        long size;

	
		pFile =	fopen("C:\\Windows\\rhododendron.bmp", "rb");    		
		if(pFile == 0) // open failed ?
		{
			size = 0;

			return;
		}

	
		
		fseek(pFile, 0, SEEK_END);

		int fileSize = ftell(pFile);

		fseek(pFile, 0, SEEK_SET);



		if (size < fileSize)
		{
			size = fileSize;

			fclose(pFile);

			return;
		}
		

			
		size = fileSize;

		char *pImage;

		fread(pImage, size, 1, pFile);

		pImage[size] = 0; // Put a 0 char at the end

		fclose(pFile);

		CString CImage(pImage);



		SAFEARRAY FAR* psa;
		SAFEARRAYBOUND rgsabound[1];
		rgsabound[0].lLbound = 0;	
		rgsabound[0].cElements = CImage.GetLength() * sizeof(TCHAR) + sizeof(TCHAR);

		// create a single dimensional byte array
		psa = SafeArrayCreate(VT_I1, 1, rgsabound);
			
		// set the data of the array with data in the edit box
		if(SafeArrayAccessData(psa,(void **)&pByte) == NOERROR)
		memcpy((LPVOID)pByte,(LPVOID)CImage.GetBuffer(CImage.GetLength()),CImage.GetLength()+1);
		SafeArrayUnaccessData(psa);

		varArray.vt = VT_ARRAY | VT_UI1;
		varArray.parray = psa;

}



void DbClass::AddNewRecord(char* key1, char* value1)

{


		VARIANT varBLOB;

		BlobToVariant(varBLOB);

		m_pRecordset->AddNew();
		m_pRecordset->Fields->Item[0L]->AppendChunk(varBLOB);
		m_pRecordset->Update();

		VariantClear(&varBLOB);

		// Move to the last row ,as the row will be added at the end
		m_pRecordset->MoveLast();

Any ideas why?
Thanks,
ns

Ravi Bhavnani8-Aug-02 3:00

8-Aug-02 3:00

Does m_pRecordset->Fields->Item[0L] have a valid value? (You can test it with an ASSERT).

Caveat: I'm ADO ignorant.

/ravi

Let's put "civil" back into "civilization"
http://www.ravib.com
ravib@ravib.com

nss8-Aug-02 5:08

8-Aug-02 5:08

yes its a valid column in the database. Its cousin GetChunk is working happpily on it to retreive data. Now I'm trying to put data into the table. This seemed the most understandable way..
Thanks for the reply. I was wondering where you were!;P

Ravi Bhavnani8-Aug-02 5:43

8-Aug-02 5:43

I'm around... Smile | :)

Been working on a hack[^] for my sister-in-law who (bless her heart!) has EBay-itis, but uses a humble 28.8 modem. Now other people have started using it and have been sending me feature requests. I love it!

/ravi

Let's put "civil" back into "civilization"
http://www.ravib.com
ravib@ravib.com

nss8-Aug-02 7:08

8-Aug-02 7:08

The link to the hack is invalid.
I'm sort of having fun too....ADO is doable.

Ravi Bhavnani8-Aug-02 11:43

8-Aug-02 11:43

Glad you're having fun, and it's not much ADO about nothing. Sorry, sometimes I think I'm a punny guy. Damn. Smile | :)

The link is fixed. You can see it here[^].

/ravi

Let's put "civil" back into "civilization"
http://www.ravib.com
ravib@ravib.com

Joel Lucsy8-Aug-02 6:11

Joel Lucsy

8-Aug-02 6:11

A couple of things: 1) A CString can't hold binary data from a bitmap. Bitmaps have NULL characters which CString uses to find the end of the string. Don't use the CString at all, it's not needed.
2). You use pImage with initializing it. char *pImage = new char[ size ]; also don't forget to delete [] pImage;
3). no need to put a zero at the end, NULL terminating binary data really doesn't do or mean anything.

There are other things that are not needed and the code could be greatly simplified but your basic assumptions are a tad off.

Joel Lucsy (jjlucsy@ameritech.net)

nss8-Aug-02 7:18

8-Aug-02 7:18

In this line:

memcpy((LPVOID)pByte,(LPVOID)CImage.GetBuffer(CImage.GetLength()),CImage.GetLength()+1);

if my data is stored in pImage, what shall I use inplace of CString CImage?

I have this to fill:

SAFEARRAYBOUND rgsabound[1];

rgsabound[0].cElements = CImage.GetLength() * sizeof(TCHAR) + sizeof(TCHAR)

so I dont know how to perform these operations on a char* instead of a CString. I cant do strlen on the pImage because its got lots of embedded nulls. What to do to get the length of the image char* buffer?

Thanks,
ns

nss8-Aug-02 7:40

8-Aug-02 7:40

I made some modifications (didnt use cString) and it never gets into the if to do the memcpy:

if(SafeArrayAccessData(psa,(void **)&pByte) == NOERROR)
memcpy((LPVOID)pByte,(LPVOID)pImage,size+1);
SafeArrayUnaccessData(psa);

The changes I made are:

size = fileSize;

char *pImage;

pImage = new char[size+1];

fread(pImage, size, 1, pFile);

fclose(pFile);

SAFEARRAY FAR* psa;
SAFEARRAYBOUND rgsabound[1];
rgsabound[0].lLbound = 0;
rgsabound[0].cElements = size * sizeof(TCHAR) + sizeof(TCHAR);

// create a single dimensional byte array
psa = SafeArrayCreate(VT_I1, 1, rgsabound);

// set the data of the array with data in the edit box
if(SafeArrayAccessData(psa,(void **)&pByte) == NOERROR)
memcpy((LPVOID)pByte,(LPVOID)pImage,size+1);
SafeArrayUnaccessData(psa);
        //delete pImage[];
varArray.vt = VT_ARRAY | VT_UI1;
varArray.parray = psa;

WHat can I do to get to the memcpy statement?
Thanks,
ns

Joel Lucsy8-Aug-02 12:54

Joel Lucsy

8-Aug-02 12:54

Ok, let's try a different tact:

void BlobToVariant( COleVariant &varArray )
{
  CFile  file;
  COleSafeArray safeArray;
  void *data;
  if (!file.Open( "c:\\windows\\rhododendron.bmp", CFile::modeRead ))
  {
    return;
  }
  safeArray.CreateOneDim( VT_UI1, file.GetLength() );
  safeArray.AccessData( (void*)&data );
  file.Read( data, file.GetLength() );
  file.Close();
  safeArray.UnaccessData();
  varArray = safeArray;
}
void DbClass::AddNewRecord( char *key1, char *value1 )
{
  /*...*/
  COleVariant varArray;
  BlobToVariant( varArray );
  m_pRecordset->AddNew();
  m_pRecordset->Fields->Item[ 0L ]->AppendChunk( varArray );
  m_pRecordset->Update();
  m_pRecordset->MoveLast();
  /*...*/
}

Joel Lucsy (jjlucsy@ameritech.net)

Hmmmm

nss8-Aug-02 14:22