C / C++ / MFC

Mark Salsbery wrote:

It would be silly to wrap GDI+ classes in MFC classes

Bitmap bmp(LPCTSTR(FilePath));  <font color="Red"><-- what's this?  A WCHAR * is expected here, not a LPCTSTR</font>
HBITMAP hBmp;
bmp.GetHBITMAP(Color::Black, &hBmp);
CBitmap *pBmp=new CBitmap;
pBmp->Attach(hBmp);  <font color="Red">//<-- attaching more permanent than FromHandle()!  Check the docs!</font>

Mark Salsbery
Microsoft MVP - Visual C++

<br />
#include "gdiplus.h"<br />
#pragma comment(lib,"gdiplus.lib")<br />
using namespace Gdiplus;<br />

followait wrote:

Bitmap bmp(LPCTSTR(FilePath));

Mark Salsbery
Microsoft MVP - Visual C++

<br />
CString FilePath=ff.GetFilePath();<br />
WCHAR *p=FilePath.AllocSysString();<br />
Bitmap bmp(p);<br />
::SysFreeString(p);<br />
Color clr(255,0,0,0);<br />
HBITMAP hBmp;<br />
bmp.GetHBITMAP(clr,&hBmp);<br />
CBitmap *pBmp=new CBitmap;<br />
pBmp->Attach(hBmp);<br />

keyto wrote:

Please Explain me in detail

// CMyDialogBar dialog

IMPLEMENT_DYNAMIC(CMyDialogBar, CDialogBar)

CMyDialogBar::CMyDialogBar()
    : CDialogBar()
{

}

CMyDialogBar::~CMyDialogBar()
{
}

void CMyDialogBar::DoDataExchange(CDataExchange* pDX)
{
    CDialogBar::DoDataExchange(pDX);
    DDX_Control(pDX, IDC_COMBO1, m_ComboBox);
    DDX_Control(pDX, IDC_PROGRESS1, m_ProgressCtrl);
}

CSize CMyDialogBar::CalcFixedLayout(BOOL bStretch, BOOL bHorz)
{
    CSize size = CDialogBar::CalcFixedLayout(bStretch, bHorz);

    if (!IsFloating())
    {
        CRect rect;
        GetParentOwner()->GetClientRect(&rect);
        if (bHorz)
            size.cx = rect.Width();
        else
            size.cy = rect.Height();
    }

    return size;
}


BEGIN_MESSAGE_MAP(CMyDialogBar, CDialogBar)
    ON_WM_CREATE()
    ON_MESSAGE(WM_INITDIALOG,&CMyDialogBar::HandleInitDialog)
END_MESSAGE_MAP()


// CMyDialogBar message handlers

LRESULT CMyDialogBar::HandleInitDialog(WPARAM wParam, LPARAM lParam)
{
    LRESULT lRet = CDialogBar::HandleInitDialog(wParam, lParam);

    UpdateData(FALSE);

    m_ComboBox.SetWindowText(_T("Test"));

    m_ProgressCtrl.SetRange(0, 100);
    m_ProgressCtrl.SetPos(50);

    return lRet;
}

int CMyDialogBar::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
    if (CDialogBar::OnCreate(lpCreateStruct) == -1)
        return -1;

    return 0;
}

Mark Salsbery
Microsoft MVP - Visual C++

bob16972 wrote:

would it be more efficient to make the methods non-static and simply require the parameters in a constructor

Mark Salsbery
Microsoft MVP - Visual C++