Source code of Windows XP (NT5)
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100 lines
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/*
* PIDLButton header
*/
namespace DirectUI
{
// Class definition
class PIDLButton : public Button
{
public:
static HRESULT Create(OUT Element** ppElement) { return Create(NULL, AE_MouseAndKeyboard, ppElement); }
static HRESULT Create(LPITEMIDLIST pidl, OUT Element** ppElement) { return Create(pidl, AE_MouseAndKeyboard, ppElement); }
static HRESULT Create(LPITEMIDLIST pidl, UINT nActive, OUT Element** ppElement);
static void SetImageSize(int nImageSize) { s_nImageSize = nImageSize; }
// System events
virtual void OnPropertyChanged(PropertyInfo* ppi, int iIndex, Value* pvOld, Value* pvNew);
virtual void OnEvent(Event* pEvent);
virtual void OnInput(InputEvent* pie);
HRESULT OnContextMenu(POINT *ppt);
LRESULT OnMenuMessage(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam);
HRESULT Initialize(LPITEMIDLIST pidl, UINT nActive);
HRESULT InvokePidl();
/*
* Message exchanged with host to handle IContextMenu2 and IContextMenu3
*/
enum {
PBM_SETMENUFORWARD = WM_USER + 1 // WM_USER is used by DirectUI
};
// Property definitions
// ClassInfo accessors (static and virtual instance-based)
static IClassInfo* Class;
virtual IClassInfo* GetClassInfo() { return Class; }
virtual HRESULT Register();
PIDLButton() { };
protected:
virtual ~PIDLButton();
HWNDElement *GetHWNDHost()
{
if (!_peHost)
{
Element *pe = GetRoot();
if (pe && pe->GetClassInfo()->IsSubclassOf(HWNDElement::Class))
{
_peHost = reinterpret_cast<HWNDElement *>(pe);
}
}
return _peHost;
}
HWND GetHWND()
{
HWNDElement *phe = GetHWNDHost();
if (phe)
{
return phe->GetHWND();
}
return NULL;
}
/*
* Custom commands we add to the context menu.
*/
enum {
// none yet
IDM_QCM_MIN = 0x0100,
IDM_QCM_MAX = 0x7FFF,
};
private:
LPITEMIDLIST _pidl;
static int s_nImageSize;
// Caching host information
HWNDElement * _peHost;
//
// Context menu handling
//
IContextMenu2 * _pcm2Pop; /* Currently popped-up context menu */
IContextMenu3 * _pcm3Pop; /* Currently popped-up context menu */
};
} // namespace DirectUI