WIMGCTL.H

//=--------------------------------------------------------------------------= 
// WImgCtl.H 
//=--------------------------------------------------------------------------= 
// Copyright 1995 - 1998 Microsoft Corporation.  All Rights Reserved. 
// 
// THIS CODE AND INFORMATION IS PROVIDED "AS IS" WITHOUT WARRANTY OF  
// ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING BUT NOT LIMITED TO  
// THE IMPLIED WARRANTIES OF MERCHANTABILITY AND/OR FITNESS FOR A  
// PARTICULAR PURPOSE. 
//=--------------------------------------------------------------------------= 
// 
// class declaration for the WebImage control. 
// 
#ifndef _WEBIMAGECONTROL_H_ 
 
#include "IPServer.H" 
#include "CtrlObj.H" 
#include "Internet.h" 
#include "WImgInterfaces.H" 
#include "Dispids.H" 
 
 
#include "DibCls.H" 
 
typedef struct tagWEBIMAGECTLSTATE { 
 
    // TOOD: put state variables here, and probably get rid of fGarbage, unless 
    // you have a real need for it 
    // 
    VARIANT_BOOL fGarbage; 
 
} WEBIMAGECTLSTATE; 
 
//=--------------------------------------------------------------------------= 
// CWebImageControl 
//=--------------------------------------------------------------------------= 
// our control. 
// 
class CWebImageControl :       public CInternetControl,  
                                                                        public IWebImage,  
public ISupportErrorInfo { 
 
  public: 
    // IUnknown methods 
    // 
    DECLARE_STANDARD_UNKNOWN(); 
 
    // IDispatch methods 
    // 
    DECLARE_STANDARD_DISPATCH(); 
 
    // ISupportErrorInfo methods 
    // 
    DECLARE_STANDARD_SUPPORTERRORINFO(); 
 
    // IWebImage methods 
    // 
    // TODO: copy over the method declarations from WebImageInterfaces.H 
    //       don't forget to remove the PURE from them. 
    // 
    STDMETHOD(get_Image)(THIS_ BSTR FAR* path) ; 
    STDMETHOD(put_Image)(THIS_ BSTR path) ; 
    STDMETHOD_(void, AboutBox)(THIS) ; 
    STDMETHOD(Scramble)(THIS) ; 
 
    // OLE Control stuff follows: 
    // 
    CWebImageControl(IUnknown *pUnkOuter); 
    virtual ~CWebImageControl(); 
 
    // static creation function.  all controls must have one of these! 
    // 
    static IUnknown *Create(IUnknown *); 
 
  private: 
    // overridables that the control must implement. 
    // 
    STDMETHOD(LoadBinaryState)(IStream *pStream); 
    STDMETHOD(SaveBinaryState)(IStream *pStream); 
    STDMETHOD(LoadTextState)(IPropertyBag *pPropertyBag, IErrorLog *pErrorLog); 
    STDMETHOD(SaveTextState)(IPropertyBag *pPropertyBag, BOOL fWriteDefault); 
    STDMETHOD(OnDraw)(DWORD dvAspect, HDC hdcDraw, LPCRECTL prcBounds, LPCRECTL prcWBounds, HDC hicTargetDev, BOOL fOptimize); 
    virtual LRESULT WindowProc(UINT msg, WPARAM wParam, LPARAM lParam); 
    virtual BOOL    RegisterClassData(void); 
 
    virtual HRESULT InternalQueryInterface(REFIID, void **); 
    virtual void    BeforeCreateWindow(void); 
 
    virtual BOOL    AfterCreateWindow(void); 
 
//Internet specific callbacks: 
// 
///OnData is called asynchronously as data for an object or property arrives... 
virtual HRESULT OnData( DISPID id, DWORD grfBSCF,IStream * bitstrm, DWORD amount ); 
 
//OnProgess is called to allow you to present progess indication UI 
virtual HRESULT OnProgress( DISPID, ULONG progress, ULONG themax, ULONG, LPCWSTR); 
 
 
    // private state information. 
    // 
 
HRESULT SetBmpPath(const char *psz); 
HRESULT SetBmpPath(IStream *); 
    HRESULT UpdateImage(); 
 
enum bmpDownloadStates 
{ 
bdsNoBitsYet, 
bdsGotFileHeader, 
        bdsGotBitmapInfo, 
bdsGettingBits, 
bdsBitsAreDone 
}; 
 
 
HDCm_dc; 
bmpDownloadStatesm_state; 
CDibFile *m_dibFile; 
CDibSection *m_dib; 
 
// Actual properties 
char *m_bmpPath; 
 
}; 
 
 
// TODO: if you have an array of verbs, then add an extern here with the name 
//       of it, so that you can include it in the DEFINE_CONTROLOBJECT. 
//       ie.  extern VERBINFO m_WebImageCustomVerbs []; 
// 
extern const GUID    *rgWebImagePropPages []; 
DEFINE_CONTROLOBJECT(WebImage, 
    &CLSID_WebImage, 
    "WebImageCtl", 
    CWebImageControl::Create, 
    1, 
    &IID_IWebImage, 
    "WebImage.HLP", 
    &DIID_DWebImageEvents, 
    OLEMISC_SETCLIENTSITEFIRST|OLEMISC_ACTIVATEWHENVISIBLE|OLEMISC_RECOMPOSEONRESIZE|OLEMISC_CANTLINKINSIDE|OLEMISC_INSIDEOUT, 
    0, 
    RESID_TOOLBOX_BITMAP, 
    "WebImageWndClass", 
    1, 
    rgWebImagePropPages, 
    0, 
    NULL); 
 
 
 
#define _WEBIMAGECONTROL_H_ 
#endif // _WEBIMAGECONTROL_H_