191 lines
5.9 KiB
C++
191 lines
5.9 KiB
C++
// --------------------------------------------------------------------------
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// Module Name: Tooltip.cpp
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//
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// Copyright (c) 2000, Microsoft Corporation
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//
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// Class that implements displaying a tooltip balloon.
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//
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// History: 2000-06-12 vtan created
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// --------------------------------------------------------------------------
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#include "shellprv.h"
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#include "Tooltip.h"
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BOOL IsBiDiLocalizedSystem( void );
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// --------------------------------------------------------------------------
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// CTooltip::CTooltip
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//
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// Arguments: hInstance = HINSTANCE of hosting process/DLL.
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// hwndParent = HWND of the parenting window.
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//
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// Returns: <none>
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//
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// Purpose: Constructor for CTooltip. Creates a tooltip window and
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// prepares it for display.
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//
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// History: 2000-06-12 vtan created
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// --------------------------------------------------------------------------
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CTooltip::CTooltip (HINSTANCE hInstance, HWND hwndParent) :
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_hwnd(NULL),
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_hwndParent(hwndParent)
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{
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DWORD dwExStyle;
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if (((GetWindowLongA(hwndParent, GWL_EXSTYLE) & WS_EX_LAYOUTRTL) != 0) || IsBiDiLocalizedSystem())
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{
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dwExStyle = WS_EX_LAYOUTRTL;
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}
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else
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{
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dwExStyle = 0;
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}
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_hwnd = CreateWindowEx(dwExStyle,
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TOOLTIPS_CLASS,
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NULL,
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WS_POPUP | TTS_NOPREFIX | TTS_ALWAYSTIP | TTS_BALLOON,
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CW_USEDEFAULT,
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CW_USEDEFAULT,
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CW_USEDEFAULT,
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CW_USEDEFAULT,
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hwndParent,
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NULL,
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hInstance,
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NULL);
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if (_hwnd != NULL)
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{
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TBOOL(SetWindowPos(_hwnd, HWND_TOPMOST, 0, 0, 0, 0, SWP_NOMOVE | SWP_NOSIZE | SWP_NOACTIVATE));
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(LRESULT)SendMessage(_hwnd, CCM_SETVERSION, COMCTL32_VERSION, 0);
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TOOLINFO toolInfo = { 0 };
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toolInfo.cbSize = sizeof(toolInfo);
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toolInfo.uFlags = TTF_TRANSPARENT | TTF_TRACK;
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toolInfo.uId = PtrToUint(_hwnd);
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(LRESULT)SendMessage(_hwnd, TTM_ADDTOOL, 0, reinterpret_cast<LPARAM>(&toolInfo));
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(LRESULT)SendMessage(_hwnd, TTM_SETMAXTIPWIDTH, 0, 300);
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}
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}
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// --------------------------------------------------------------------------
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// CTooltip::~CTooltip
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//
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// Arguments: <none>
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//
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// Returns: <none>
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//
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// Purpose: Destructor for the CTooltip class. This destroys the tooltip
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// window created. If the parent of the tooltip window is
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// destroyed before this is invoked user32!DestroyWindow will
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// cause the trace to fire. The object's lifetime must be
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// carefully managed by the user of this class.
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//
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// History: 2000-06-12 vtan created
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// --------------------------------------------------------------------------
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CTooltip::~CTooltip (void)
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{
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if (_hwnd != NULL)
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{
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TBOOL(DestroyWindow(_hwnd));
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_hwnd = NULL;
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}
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}
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// --------------------------------------------------------------------------
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// CTooltip::SetPosition
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//
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// Arguments: lPosX = X position of the balloon tip window (screen).
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// lPosY = Y position of the balloon tip window (screen).
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//
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// Returns: <none>
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//
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// Purpose: Positions the tooltip window at the given screen co-ordinates.
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// If the parameters are defaulted then this positions the
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// tooltip relative to the parent.
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//
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// History: 2000-06-12 vtan created
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// --------------------------------------------------------------------------
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void CTooltip::SetPosition (LONG lPosX, LONG lPosY) const
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{
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if ((lPosX == LONG_MIN) && (lPosY == LONG_MIN))
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{
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RECT rc;
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TBOOL(GetWindowRect(_hwndParent, &rc));
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lPosX = (rc.left + rc.right) / 2;
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lPosY = rc.bottom;
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}
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(LRESULT)SendMessage(_hwnd, TTM_TRACKPOSITION, 0, MAKELONG(lPosX, lPosY));
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}
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// --------------------------------------------------------------------------
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// CTooltip::SetCaption
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//
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// Arguments: dwIcon = Icon type to set for the tooltip caption.
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// pszCaption = Caption of the tooltip.
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//
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// Returns: <none>
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//
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// Purpose: Sets the tooltip caption.
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//
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// History: 2000-06-12 vtan created
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// --------------------------------------------------------------------------
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void CTooltip::SetCaption (DWORD dwIcon, const TCHAR *pszCaption) const
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{
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(LRESULT)SendMessage(_hwnd, TTM_SETTITLE, dwIcon, reinterpret_cast<LPARAM>(pszCaption));
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}
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// --------------------------------------------------------------------------
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// CTooltip::SetText
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//
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// Arguments: pszText = Content of the actual tooltip.
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//
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// Returns: <none>
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//
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// Purpose: Sets the tooltip text.
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//
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// History: 2000-06-12 vtan created
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// --------------------------------------------------------------------------
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void CTooltip::SetText (const TCHAR *pszText) const
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{
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TOOLINFO toolInfo = { 0 };
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toolInfo.cbSize = sizeof(toolInfo);
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toolInfo.uId = PtrToUint(_hwnd);
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toolInfo.lpszText = const_cast<TCHAR*>(pszText);
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(LRESULT)SendMessage(_hwnd, TTM_UPDATETIPTEXT, 0, reinterpret_cast<LPARAM>(&toolInfo));
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}
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// --------------------------------------------------------------------------
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// CTooltip::Show
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//
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// Arguments: <none>
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//
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// Returns: <none>
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//
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// Purpose: Shows the tooltip window.
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//
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// History: 2000-06-12 vtan created
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// --------------------------------------------------------------------------
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void CTooltip::Show (void) const
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{
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TOOLINFO toolInfo = { 0 };
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toolInfo.cbSize = sizeof(toolInfo);
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toolInfo.uId = PtrToUint(_hwnd);
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(LRESULT)SendMessage(_hwnd, TTM_TRACKACTIVATE, TRUE, reinterpret_cast<LPARAM>(&toolInfo));
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}
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