Re: Marquee Progess Bar - C / C++ / MFC Discussion Boards

How to add copy and paste functionality for CListCtrl

yvanc8-Apr-10 4:31

8-Apr-10 4:31

Hello, I have been working on an MFC project that looks like a registry editor which have a treeview on the left side and listview on the right side. Once the user sets focus on one item in the listview and clicks ctrl+c, how do we add a functionality to copy the listview item text into the clipboard? please help.

Re: How to add copy and paste functionality for CListCtrl

eusto8-Apr-10 7:48

eusto

8-Apr-10 7:48

see CWnd::PreTranslateMessage
and use GetKeyState for VK_CONTROL to see if Ctrl key is pressed

Marquee Progess Bar

JM22518-Apr-10 3:40

JM2251

8-Apr-10 3:40

Hi,

How to put marquee progress bar in win32 under windows XP.

Re: Marquee Progess Bar

Nuri Ismail8-Apr-10 4:05

Nuri Ismail

8-Apr-10 4:05

Create your progress bar with PBS_MARQUEE[^] style.
You can start and stop the animation, and control its speed using PBM_SETMARQUEE[^] message. Smile | :)

Re: Marquee Progess Bar

Cool_Dev8-Apr-10 4:20

Cool_Dev

8-Apr-10 4:20

In win32

//Set Marquee Style to Progress Bar
SetWindowLongPtr(hwndProgressBar, GWL_STYLE, PBS_MARQUEE); 
//Turn On Marque
SendMessage(hwndProgressBar, PBM_SETMARQUEE, (WPARAM)TRUE, (LPARAM)100/*interval*/);

Marquee style needs additional requirements. If it doesn't work, try additional resource manifests.
Build Requirements for Windows Vista Common Controls

Manifest Resources

Re: Marquee Progess Bar

JM22518-Apr-10 20:31

JM2251

8-Apr-10 20:31

I am getting compilation error:

C2065: 'PBS_MARQUEE' : undeclared identifier

I written the code the InitDialog()

HWND hwndProgress=GetDlgItem(m_hwnd,IDC_PROGRESS1);
SetWindowLongPtr(hwndProgress, GWL_STYLE, PBS_MARQUEE);

My application is win32. Please suggest??

Re: Marquee Progess Bar

Emilio Garavaglia8-Apr-10 21:48

Emilio Garavaglia

8-Apr-10 21:48

Check your SDK version and the value asigned to the WINVER symbol.
May be the definition of that constant is disabled by a old WINVER number

2 bugs found.
> recompile ...
65534 bugs found.
D'Oh! | :doh:

Re: Marquee Progess Bar

Cool_Dev8-Apr-10 22:26

Cool_Dev

8-Apr-10 22:26

as emilo told, you can see those values in CommCtrl.h as

#if (_WIN32_WINNT >= 0x0501)
#define PBS_MARQUEE             0x08
#endif       // _WIN32_WINNT >= 0x0501

#if (_WIN32_WINNT >= 0x0501)
#define PBM_SETMARQUEE          (WM_USER+10)
#endif      // _WIN32_WINNT >= 0x0501

so check your source code (probably in targetver.h) for #define _WIN32_WINNT and check the value.

Also, you can try defining those values manually in your code as

#define PBS_MARQUEE 0x08
#define PBM_SETMARQUEE (WM_USER+10)

Re: Marquee Progess Bar

Emilio Garavaglia9-Apr-10 3:04

Emilio Garavaglia

9-Apr-10 3:04

err... this should be said to the OP not to myself

2 bugs found.
> recompile ...
65534 bugs found.
D'Oh! | :doh:

Re: Marquee Progess Bar

Cool_Dev9-Apr-10 3:42

Cool_Dev

9-Apr-10 3:42

he might have seen it already Smile | :)

How to assign Drive Letter to a volume?

Madan Chauhan8-Apr-10 2:21

Madan Chauhan

8-Apr-10 2:21

Hi all,

There is a volume in my hard drive that currently does not has any drive letter. I need to assign a drive letter to this volume. Please suggest me some way to do so.

If a volume has any drive letter already then I can change it's drive letter by getting it's GUID and assign any other drive letter easily. But if the volume does not has any drive letter then how can I get its GUID to assign a drive letter.

If there is any other way to do this please suggest me.

Thanks & Regards
Madan

Re: How to assign Drive Letter to a volume?

Adam Roderick J8-Apr-10 2:31

Adam Roderick J

8-Apr-10 2:31

If you are asking not related to API, then just check this article from microsoft.
It will help you do that [^]

Величие не Бога может быть недооценена.

Re: How to assign Drive Letter to a volume?

KarstenK8-Apr-10 3:08

KarstenK

8-Apr-10 3:08

i wrote an article about it: A Quick Drive Manager[^]

Press F1 for help or google it.
Greetings from Germany

How could I run one of my class member Functions in a new thread:

m_code8-Apr-10 2:09

m_code

8-Apr-10 2:09

How could I run one of my class member Functions in a new thread:
ex:

class e
{
	...
public:
	void myMainLoopFunc(void){...}
};

I want to run myMainLoopFunc in a new thread what should I do?

Re: How could I run one of my class member Functions in a new thread:

Adam Roderick J8-Apr-10 2:20

Adam Roderick J

8-Apr-10 2:20

I think you should get familiar with AfxBeginThread([^])

And its usage, surely u will understand how to do that by understanding about AfxBeginThread.
well here is a code. Make the myMainLooFunc with the specified function signature and static(To know why, check the msdn for more help).

class e
{
	...
public:
	static UINT myMainLoopFunc(LPVOID kodata)
        {
         ...
        }
};

Величие не Бога может быть недооценена.

Re: How could I run one of my class member Functions in a new thread:

Cool_Dev8-Apr-10 2:24

Cool_Dev

8-Apr-10 2:24

pass the class instance to thread proc as argument and call function from there

e *pE = ...   //assign running instance of e. assign this pointer if from inside the class e.
AfxBeginThread(fnThreadProc, p);

//Thread proc definition
UINT fnThreadProc(LPVOID lpParam)
{
  E *pE = (*pE)lpParam;
  pE->myMainLoopFunc(); //call any public function in class e.
}

Re: How could I run one of my class member Functions in a new thread:

m_code8-Apr-10 3:03

m_code

8-Apr-10 3:03

Good idea,
But I have faced some problems.
My e class Objects just get a HWND object in their contructor argument
and draw something on it, in myMainLoopFunc() method How ever the code runs with no error But nothing drwan in the window.
But without threading it works perfectly.
Do you have any idea what's the problem.

Message Removed

8-Apr-10 3:28

Eugen Podsypalnikov

8-Apr-10 3:28

Message Removed

Re: How could I run one of my class member Functions in a new thread:

m_code8-Apr-10 3:44

m_code

8-Apr-10 3:44

sorry But i don't understand your point of view and why should i do this?

Re: How could I run one of my class member Functions in a new thread:

KarstenK8-Apr-10 3:41

KarstenK

8-Apr-10 3:41

make the HWND to the start parameter of the Threadfunc and construct in the func the new object. Sleepy | :zzz:

Press F1 for help or google it.
Greetings from Germany

Re: How could I run one of my class member Functions in a new thread:

m_code8-Apr-10 3:50

m_code

8-Apr-10 3:50

That made the same problem either, nothing is drawn in the HWND while the dawing methods executed one after another

Re: How could I run one of my class member Functions in a new thread:

KarstenK8-Apr-10 4:09

KarstenK

8-Apr-10 4:09

can you show me some code?

Press F1 for help or google it.
Greetings from Germany

CreateBitmapIndirect() doesnt create bitmap

globus0008-Apr-10 2:08

globus000

8-Apr-10 2:08

Hello
I've got the following problem with CreateBitmapIndirect(). I've got bitmap data - width, height, bits-per-pixel and array of bits. I'm trying to create HBITMAP by calling CreateBitmapIndirect, but when it's created the biBits of the BITMAP object is NULL. Here is the cpde"

int size = 0, width = 0, height = 0, planes = 0, bpp = 0, r = 0, g = 0, b = 0;
unsigned char* pBits = NULL;
CComVariant data;
hr = pIShellBmp->GetData( &width, &height, &planes, &bpp, &data ); //my interface which returns serialized bitmap
hr = pIShellBmp->GetColors( &r, &g, &b );
            if( SUCCEEDED(hr) )
            {

                CComSafeArray<BYTE> bits( data.parray );
                pBits = new unsigned char[ bits.GetCount() ]; // this is array of bits in bitmap - it's content of other BITMAP::biBits which I store in IShellBmp interface in COM server (local service)
                for( int i = 0; i < bits.GetCount(); ++i )
                {
                    pBits[i] = bits.GetAt( i );
                }

                BITMAP bmp;

                bmp.bmType = 0;
                bmp.bmBitsPixel = bpp;
                bmp.bmHeight = height;
                bmp.bmPlanes = planes;
                bmp.bmWidth = width;
                bmp.bmWidthBytes = width * bpp / 8 + (width * bpp / 8)%2;
                bmp.bmBits = pBits;


                HBITMAP hBitmap = CreateBitmapIndirect( &bmp ); // THIS IS OK - bitmap created


                BITMAPINFO bmi;
                bmi.bmiHeader.biSize = sizeof(BITMAPINFO);
                bmi.bmiHeader.biBitCount = bpp;
                bmi.bmiHeader.biClrImportant = 0;
                bmi.bmiHeader.biClrUsed = 0;
                bmi.bmiHeader.biCompression = BI_RGB;
                bmi.bmiHeader.biHeight = height;
                bmi.bmiHeader.biPlanes = planes;
                bmi.bmiHeader.biSizeImage = 0;
                bmi.bmiHeader.biWidth = width;


                if( hBitmap == NULL )
                {
                    DWORD err = GetLastError();
                    hr = E_FAIL;
                }//if
                else
                {
                    DWORD err = SetDIBits( CreateCompatibleDC(NULL), hBitmap, 0, bmp.bmHeight, pBits, &bmi, DIB_RGB_COLORS );  // This line returns 0 - ???
                    err = GetLastError(); // error code is 0
                    GetObject( hBitmap, sizeof(BITMAP), &bmp ); // bmp.bibits contains NULL - why??
                    WriteBMPFile( hBitmap, _T("c:\\received.bmp"), CreateCompatibleDC( NULL ) );
                }//else
            }//if

For some reasons the lines in bold fail and there is no error code. Can you please help me - where I'm wrong?

Re: CreateBitmapIndirect() doesnt create bitmap

KarstenK8-Apr-10 3:23

KarstenK

8-Apr-10 3:23

HBITMAP hBitmap = CreateBitmapIndirect( &bmp );
//check out
GetObject( hBitmap, sizeof(BITMAP), &bmp );
//or draw the bitmap for visual check

//isnt SetDIBits() double done
read: http://msdn.microsoft.com/en-us/library/dd144904%28VS.85%29.aspx[^]

Press F1 for help or google it.
Greetings from Germany

Re: CreateBitmapIndirect() doesnt create bitmap

Jonathan Davies8-Apr-10 5:23

Jonathan Davies

8-Apr-10 5:23

Should you be setting bmi.bmiHeader.biSizeImage before calling SetDIBits? I only say this because I found the following I'd used which uses GetDIBits to calculate it's value:

...

// Calculate the biSizeImage parameter using GetDIBits or manually if this fails
int ScanLines = GetDIBits(hMemDC,hBmp,0,B1Win.ylen,NULL,lpbmInfo,DIB_RGB_COLORS);
if(lpbmInfo->bmiHeader.biSizeImage == 0)
    lpbmInfo->bmiHeader.biSizeImage = ((((lpbmInfo->bmiHeader.biWidth * lpbmInfo->bmiHeader.biBitCount) + 31) & ~31) >> 3) * lpbmInfo->bmiHeader.biHeight;



// Copy bits from RGB888 to 24 bit DIB and inverting bitmap 
ScanLines = (int)(InControl.VideoRoi.ylen);	// SetDIBits inverts if height is -ve

// biHeight originally set -ve here
ScanLines = SetDIBits(hMemDC,hBmp,0,ScanLines,BDBoard.pcnvBuffer,lpbmInfo,DIB_RGB_COLORS);

...

Use Ctrl+Left/Right to switch messages, Ctrl+Up/Down to switch threads, Ctrl+Shift+Left/Right to switch pages.