Source code of Windows XP (NT5)
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416 lines
13 KiB

#include "stdafx.h"
#include "hostutil.h"
#define DEFAULT_BALLOON_TIMEOUT (10*1000) // 10 seconds
LRESULT CALLBACK BalloonTipSubclassProc(
HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam,
UINT_PTR uIdSubclass, DWORD_PTR dwRefData)
{
switch (uMsg)
{
case WM_TIMER:
// Our autodismiss timer
if (uIdSubclass == wParam)
{
KillTimer(hwnd, wParam);
DestroyWindow(hwnd);
return 0;
}
break;
// On a settings change, recompute our size and margins
case WM_SETTINGCHANGE:
MakeMultilineTT(hwnd);
break;
case WM_NCDESTROY:
RemoveWindowSubclass(hwnd, BalloonTipSubclassProc, uIdSubclass);
break;
}
return DefSubclassProc(hwnd, uMsg, wParam, lParam);
}
//
// A "fire and forget" balloon tip. Tell it where to go, what font
// to use, and what to say, and it pops up and times out.
//
HWND CreateBalloonTip(HWND hwndOwner, int x, int y, HFONT hf,
UINT idsTitle, UINT idsText)
{
DWORD dwStyle = TTS_ALWAYSTIP | TTS_BALLOON | TTS_NOPREFIX;
HWND hwnd = CreateWindowEx(0, TOOLTIPS_CLASS, NULL, dwStyle,
0, 0, 0, 0,
hwndOwner, NULL,
_Module.GetModuleInstance(), NULL);
if (hwnd)
{
MakeMultilineTT(hwnd);
TCHAR szBuf[MAX_PATH];
TOOLINFO ti;
ti.cbSize = sizeof(ti);
ti.hwnd = hwndOwner;
ti.uId = reinterpret_cast<UINT_PTR>(hwndOwner);
ti.uFlags = TTF_IDISHWND | TTF_SUBCLASS | TTF_TRACK;
ti.hinst = _Module.GetResourceInstance();
// We can't use MAKEINTRESOURCE because that allows only up to 80
// characters for text, and our text can be longer than that.
ti.lpszText = szBuf;
if (LoadString(_Module.GetResourceInstance(), idsText, szBuf, ARRAYSIZE(szBuf)))
{
SendMessage(hwnd, TTM_ADDTOOL, 0, reinterpret_cast<LPARAM>(&ti));
if (idsTitle &&
LoadString(_Module.GetResourceInstance(), idsTitle, szBuf, ARRAYSIZE(szBuf)))
{
SendMessage(hwnd, TTM_SETTITLE, TTI_INFO, reinterpret_cast<LPARAM>(szBuf));
}
SendMessage(hwnd, TTM_TRACKPOSITION, 0, MAKELONG(x, y));
if (hf)
{
SetWindowFont(hwnd, hf, FALSE);
}
SendMessage(hwnd, TTM_TRACKACTIVATE, TRUE, reinterpret_cast<LPARAM>(&ti));
// Set the autodismiss timer
if (SetWindowSubclass(hwnd, BalloonTipSubclassProc, (UINT_PTR)hwndOwner, 0))
{
SetTimer(hwnd, (UINT_PTR)hwndOwner, DEFAULT_BALLOON_TIMEOUT, NULL);
}
}
}
return hwnd;
}
// Make the tooltip control multiline (infotip or balloon tip).
// The size computations are the same ones that comctl32 uses
// for listview and treeview infotips.
void MakeMultilineTT(HWND hwndTT)
{
HWND hwndOwner = GetWindow(hwndTT, GW_OWNER);
HDC hdc = GetDC(hwndOwner);
if (hdc)
{
int iWidth = MulDiv(GetDeviceCaps(hdc, LOGPIXELSX), 300, 72);
int iMaxWidth = GetDeviceCaps(hdc, HORZRES) * 3 / 4;
SendMessage(hwndTT, TTM_SETMAXTIPWIDTH, 0, min(iWidth, iMaxWidth));
static const RECT rcMargin = {4, 4, 4, 4};
SendMessage(hwndTT, TTM_SETMARGIN, 0, (LPARAM)&rcMargin);
ReleaseDC(hwndOwner, hdc);
}
}
CPropBagFromReg::CPropBagFromReg(HKEY hk)
{
_cref = 1;
_hk = hk;
};
CPropBagFromReg::~CPropBagFromReg()
{
RegCloseKey(_hk);
}
STDMETHODIMP CPropBagFromReg::QueryInterface(REFIID riid, PVOID *ppvObject)
{
if (IsEqualIID(riid, IID_IPropertyBag))
*ppvObject = (IPropertyBag *)this;
else if (IsEqualIID(riid, IID_IUnknown))
*ppvObject = this;
else
{
*ppvObject = NULL;
return E_NOINTERFACE;
}
AddRef();
return S_OK;
}
ULONG CPropBagFromReg::AddRef(void)
{
return ++_cref; // on the stack
}
ULONG CPropBagFromReg::Release(void)
{
if (--_cref)
return _cref;
delete this;
return 0;
}
STDMETHODIMP CPropBagFromReg::Read(LPCOLESTR pszPropName, VARIANT *pVar, IErrorLog *pErrorLog)
{
VARTYPE vtDesired = pVar->vt;
WCHAR szTmp[100];
DWORD cb = sizeof(szTmp);
DWORD dwType;
if (ERROR_SUCCESS == RegQueryValueExW(_hk, pszPropName, NULL, &dwType, (LPBYTE)szTmp, &cb) && (REG_SZ==dwType))
{
// TODO - use dwType to set the vt properly
pVar->bstrVal = SysAllocString(szTmp);
if (pVar->bstrVal)
{
pVar->vt = VT_BSTR;
return VariantChangeTypeForRead(pVar, vtDesired);
}
else
return E_OUTOFMEMORY;
}
else
return E_INVALIDARG;
}
HRESULT CreatePropBagFromReg(LPCTSTR pszKey, IPropertyBag**pppb)
{
HRESULT hr = E_OUTOFMEMORY;
*pppb = NULL;
// Try current user 1st, if that fails, fall back to localmachine
HKEY hk;
if (ERROR_SUCCESS == RegOpenKeyEx(HKEY_CURRENT_USER, pszKey, NULL, KEY_ENUMERATE_SUB_KEYS | KEY_QUERY_VALUE, &hk)
|| ERROR_SUCCESS == RegOpenKeyEx(HKEY_LOCAL_MACHINE, pszKey, NULL, KEY_ENUMERATE_SUB_KEYS | KEY_QUERY_VALUE, &hk))
{
CPropBagFromReg* pcpbfi = new CPropBagFromReg(hk);
if (pcpbfi)
{
hr = pcpbfi->QueryInterface(IID_IPropertyBag, (void**) pppb);
pcpbfi->Release();
}
else
{
RegCloseKey(hk);
}
}
return hr;
};
BOOL RectFromStrW(LPCWSTR pwsz, RECT *pr)
{
pr->left = StrToIntW(pwsz);
pwsz = StrChrW(pwsz, L',');
if (!pwsz)
return FALSE;
pr->top = StrToIntW(++pwsz);
pwsz = StrChrW(pwsz, L',');
if (!pwsz)
return FALSE;
pr->right = StrToIntW(++pwsz);
pwsz = StrChrW(pwsz, L',');
if (!pwsz)
return FALSE;
pr->bottom = StrToIntW(++pwsz);
return TRUE;
}
LRESULT HandleApplyRegion(HWND hwnd, HTHEME hTheme,
PSMNMAPPLYREGION par, int iPartId, int iStateId)
{
if (hTheme)
{
RECT rc;
GetWindowRect(hwnd, &rc);
// Map to caller's coordinates
MapWindowRect(NULL, par->hdr.hwndFrom, &rc);
HRGN hrgn;
if (SUCCEEDED(GetThemeBackgroundRegion(hTheme, NULL, iPartId, iStateId, &rc, &hrgn)) && hrgn)
{
// Replace our window rectangle with the region
HRGN hrgnRect = CreateRectRgnIndirect(&rc);
if (hrgnRect)
{
// We want to take par->hrgn, subtract hrgnRect and add hrgn.
// But we want to do this with a single operation to par->hrgn
// so we don't end up with a corrupted region on low memory failure.
// So we do
//
// par->hrgn ^= hrgnRect ^ hrgn.
//
// If hrgnRect ^ hrgn == NULLREGION then the background
// does not want to customize the rectangle so we can just
// leave par->hrgn alone.
int iResult = CombineRgn(hrgn, hrgn, hrgnRect, RGN_XOR);
if (iResult != ERROR && iResult != NULLREGION)
{
CombineRgn(par->hrgn, par->hrgn, hrgn, RGN_XOR);
}
DeleteObject(hrgnRect);
}
DeleteObject(hrgn);
}
}
return 0;
}
//****************************************************************************
//
// CAccessible - Most of this class is just forwarders
#define ACCESSIBILITY_FORWARD(fn, typedargs, args) \
HRESULT CAccessible::fn typedargs \
{ \
return _paccInner->fn args; \
}
ACCESSIBILITY_FORWARD(get_accParent,
(IDispatch **ppdispParent),
(ppdispParent))
ACCESSIBILITY_FORWARD(GetTypeInfoCount,
(UINT *pctinfo),
(pctinfo))
ACCESSIBILITY_FORWARD(GetTypeInfo,
(UINT itinfo, LCID lcid, ITypeInfo **pptinfo),
(itinfo, lcid, pptinfo))
ACCESSIBILITY_FORWARD(GetIDsOfNames,
(REFIID riid, OLECHAR **rgszNames, UINT cNames,
LCID lcid, DISPID *rgdispid),
(riid, rgszNames, cNames, lcid, rgdispid))
ACCESSIBILITY_FORWARD(Invoke,
(DISPID dispidMember, REFIID riid, LCID lcid, WORD wFlags,
DISPPARAMS *pdispparams, VARIANT *pvarResult,
EXCEPINFO *pexcepinfo, UINT *puArgErr),
(dispidMember, riid, lcid, wFlags,
pdispparams, pvarResult,
pexcepinfo, puArgErr))
ACCESSIBILITY_FORWARD(get_accChildCount,
(long *pChildCount),
(pChildCount))
ACCESSIBILITY_FORWARD(get_accChild,
(VARIANT varChildIndex, IDispatch **ppdispChild),
(varChildIndex, ppdispChild))
ACCESSIBILITY_FORWARD(get_accName,
(VARIANT varChild, BSTR *pszName),
(varChild, pszName))
ACCESSIBILITY_FORWARD(get_accValue,
(VARIANT varChild, BSTR *pszValue),
(varChild, pszValue))
ACCESSIBILITY_FORWARD(get_accDescription,
(VARIANT varChild, BSTR *pszDescription),
(varChild, pszDescription))
ACCESSIBILITY_FORWARD(get_accRole,
(VARIANT varChild, VARIANT *pvarRole),
(varChild, pvarRole))
ACCESSIBILITY_FORWARD(get_accState,
(VARIANT varChild, VARIANT *pvarState),
(varChild, pvarState))
ACCESSIBILITY_FORWARD(get_accHelp,
(VARIANT varChild, BSTR *pszHelp),
(varChild, pszHelp))
ACCESSIBILITY_FORWARD(get_accHelpTopic,
(BSTR *pszHelpFile, VARIANT varChild, long *pidTopic),
(pszHelpFile, varChild, pidTopic))
ACCESSIBILITY_FORWARD(get_accKeyboardShortcut,
(VARIANT varChild, BSTR *pszKeyboardShortcut),
(varChild, pszKeyboardShortcut))
ACCESSIBILITY_FORWARD(get_accFocus,
(VARIANT *pvarFocusChild),
(pvarFocusChild))
ACCESSIBILITY_FORWARD(get_accSelection,
(VARIANT *pvarSelectedChildren),
(pvarSelectedChildren))
ACCESSIBILITY_FORWARD(get_accDefaultAction,
(VARIANT varChild, BSTR *pszDefaultAction),
(varChild, pszDefaultAction))
ACCESSIBILITY_FORWARD(accSelect,
(long flagsSelect, VARIANT varChild),
(flagsSelect, varChild))
ACCESSIBILITY_FORWARD(accLocation,
(long *pxLeft, long *pyTop, long *pcxWidth, long *pcyHeight, VARIANT varChild),
(pxLeft, pyTop, pcxWidth, pcyHeight, varChild))
ACCESSIBILITY_FORWARD(accNavigate,
(long navDir, VARIANT varStart, VARIANT *pvarEndUpAt),
(navDir, varStart, pvarEndUpAt))
ACCESSIBILITY_FORWARD(accHitTest,
(long xLeft, long yTop, VARIANT *pvarChildAtPoint),
(xLeft, yTop, pvarChildAtPoint))
ACCESSIBILITY_FORWARD(accDoDefaultAction,
(VARIANT varChild),
(varChild));
ACCESSIBILITY_FORWARD(put_accName,
(VARIANT varChild, BSTR szName),
(varChild, szName))
ACCESSIBILITY_FORWARD(put_accValue,
(VARIANT varChild, BSTR pszValue),
(varChild, pszValue));
LRESULT CALLBACK CAccessible::s_SubclassProc(
HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam,
UINT_PTR uIdSubclass, DWORD_PTR dwRefData)
{
CAccessible *self = reinterpret_cast<CAccessible *>(dwRefData);
switch (uMsg)
{
case WM_GETOBJECT:
if (lParam == OBJID_CLIENT) {
HRESULT hr;
// Create the accessibility object for the inner listview if we haven't already
// We forward nearly all calls to the inner IAccessible.
if (!self->_paccInner)
{
hr = CreateStdAccessibleObject(hwnd, (DWORD)lParam, IID_PPV_ARG(IAccessible, &self->_paccInner));
} else {
hr = S_OK;
}
if (SUCCEEDED(hr))
{
return LresultFromObject(IID_IAccessible, wParam, SAFECAST(self, IAccessible *));
} else {
return hr;
}
};
break;
case WM_NCDESTROY:
RemoveWindowSubclass(hwnd, s_SubclassProc, 0);
break;
}
return DefSubclassProc(hwnd, uMsg, wParam, lParam);
}
HRESULT CAccessible::GetRoleString(DWORD dwRole, BSTR *pbsOut)
{
*pbsOut = NULL;
WCHAR szBuf[MAX_PATH];
if (GetRoleTextW(dwRole, szBuf, ARRAYSIZE(szBuf)))
{
*pbsOut = SysAllocString(szBuf);
}
return *pbsOut ? S_OK : E_OUTOFMEMORY;
}
HRESULT CAccessible::CreateAcceleratorBSTR(TCHAR tch, BSTR *pbsOut)
{
TCHAR sz[2] = { tch, 0 };
*pbsOut = SysAllocString(sz);
return *pbsOut ? S_OK : E_OUTOFMEMORY;
}