291 lines
7.7 KiB
C++
291 lines
7.7 KiB
C++
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//+----------------------------------------------------------------------------
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//
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// File: tooltip.cpp
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//
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// Module: CMDIAL32.DLL
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//
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// Synopsis: This module contains the code for the implementing balloon tips.
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//
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// Copyright (c) 1996-2000 Microsoft Corporation
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//
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// Author: markcl Created Header 11/2/00
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//
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//+----------------------------------------------------------------------------
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#include "cmmaster.h"
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WNDPROC CBalloonTip::m_pfnOrgBalloonWndProc = NULL;
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//+----------------------------------------------------------------------------
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//
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// Function: CBalloonTip::CBalloonTip
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//
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// Synopsis: Balloon tip constructor
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//
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// Arguments: nothing
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//
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// Returns: nothing
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//
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// History: markcl Created Header 10/31/00
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//
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//+----------------------------------------------------------------------------
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CBalloonTip::CBalloonTip()
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{
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// Nothing to do
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}
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//+----------------------------------------------------------------------------
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//
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// Function: CBalloonTip::DisplayBallonTip
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//
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// Synopsis: Displays a balloon tip
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//
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// Arguments: LLPOINT lppoint - pointer to a POINT struct with the coordinates for displaying
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// int iIcon - type of icon to display in the balloon tip
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// LPCTSTR lpszTitle - Title of the balloon tip window
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// LPTSTR lpszBalloonMsg - Message to display in the balloon tip
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// HWND hWndParent - handle to the parent window
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//
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// Returns: nothing
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//
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// History: markcl Created Header 10/31/00
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//
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//+----------------------------------------------------------------------------
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BOOL CBalloonTip::DisplayBalloonTip(LPPOINT lppoint, UINT iIcon, LPCTSTR lpszTitle, LPTSTR lpszBalloonMsg, HWND hWndParent)
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{
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//
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// If we don't have a message or a position, we don't display the balloon tip.
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//
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if (NULL == lpszBalloonMsg || NULL == lppoint)
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{
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MYDBGASSERT(lpszBalloonMsg && lppoint);
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return FALSE;
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}
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//
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// Comctl32.dll must be 5.80 or greater to use balloon tips. We check the dll version
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// by calling DllGetVersion in comctl32.dll.
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//
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HINSTANCE hComCtl = LoadLibraryExA("comctl32.dll", NULL, 0);
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CMASSERTMSG(hComCtl, TEXT("LoadLibrary - comctl32 failed for Balloon Tips"));
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if (hComCtl != NULL)
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{
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typedef HRESULT (*DLLGETVERSIONPROC)(DLLVERSIONINFO* lpdvi);
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DLLGETVERSIONPROC fnDllGetVersion = (DLLGETVERSIONPROC) GetProcAddress(hComCtl,"DllGetVersion");
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MYDBGASSERT(fnDllGetVersion);
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if (NULL == fnDllGetVersion)
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{
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//
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// DllGetVersion does not exist in Comctl32.dll. This mean the version is too old so we need to fail.
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//
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FreeLibrary(hComCtl);
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return FALSE;
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}
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else
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{
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DLLVERSIONINFO dvi;
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ZeroMemory(&dvi, sizeof(dvi));
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dvi.cbSize = sizeof(dvi);
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HRESULT hResult = (*fnDllGetVersion)(&dvi);
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FreeLibrary(hComCtl);
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if (SUCCEEDED(hResult))
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{
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//
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// Take the version returned and compare it to 5.80.
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//
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if (MAKELONG(dvi.dwMinorVersion,dvi.dwMajorVersion) < MAKELONG(80,5))
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{
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CMTRACE2(TEXT("COMCTL32.DLL version - %d.%d"),dvi.dwMajorVersion,dvi.dwMinorVersion);
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CMTRACE1(TEXT("COMCTL32.DLL MAKELONG - %li"),MAKELONG(dvi.dwMinorVersion,dvi.dwMajorVersion));
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CMTRACE1(TEXT("Required minimum MAKELONG - %li"),MAKELONG(80,5));
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// Wrong DLL version
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return FALSE;
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}
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}
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else
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{
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CMASSERTMSG(FALSE, TEXT("Call to DllGetVersion in comctl32.dll failed."));
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return FALSE;
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}
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}
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}
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//
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// Hide any existing balloon tips before trying to display a new one.
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//
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if (m_hwndTT && m_bTTActive)
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{
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HideBalloonTip();
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}
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//
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// Create the Balloon ToolTip window
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//
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m_hwndTT = CreateWindowExU(NULL,TOOLTIPS_CLASS, TEXT("CM Balloon Tip Window"),
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WS_POPUP | TTS_BALLOON, CW_USEDEFAULT, CW_USEDEFAULT,
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CW_USEDEFAULT, CW_USEDEFAULT, hWndParent, NULL, g_hInst, NULL);
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if (m_hwndTT)
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{
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m_ti.cbSize = sizeof(m_ti);
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m_ti.uFlags = TTF_TRACK;
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m_ti.hwnd = hWndParent;
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m_ti.hinst = g_hInst;
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SendMessageU(m_hwndTT,TTM_ADDTOOL,0,(LPARAM) (LPTOOLINFO) &m_ti);
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SendMessageU(m_hwndTT,TTM_SETMAXTIPWIDTH,0,200);
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}
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else
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{
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MYDBGASSERT(m_hwndTT);
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return FALSE;
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}
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//
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// Subclass the edit control
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//
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m_pfnOrgBalloonWndProc = (WNDPROC)SetWindowLongU(m_hwndTT, GWLP_WNDPROC, (LONG_PTR)SubClassBalloonWndProc);
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//
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// Save the this pointer with the window
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//
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SetWindowLongU(m_hwndTT, GWLP_USERDATA, (LONG_PTR)this);
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//
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// Set the balloon message
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//
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m_ti.lpszText = lpszBalloonMsg;
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SendMessageU(m_hwndTT,TTM_UPDATETIPTEXT,0,(LPARAM) (LPTOOLINFO) &m_ti);
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//
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// If we got a title, then add it
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//
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if (lpszTitle)
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{
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//
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// confirm we have a valid icon
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//
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if (iIcon > 3)
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{
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iIcon = TTI_NONE; // TTI_NONE = No icon
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}
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SendMessageU(m_hwndTT,TTM_SETTITLE,(WPARAM) iIcon,(LPARAM) lpszTitle);
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}
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//
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// Set the position
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//
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SendMessageU(m_hwndTT,TTM_TRACKPOSITION,0,(LPARAM) (DWORD) MAKELONG(lppoint->x,lppoint->y));
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//
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// Show balloon tip window
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//
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SendMessageU(m_hwndTT,TTM_TRACKACTIVATE,(WPARAM) TRUE,(LPARAM) (LPTOOLINFO) &m_ti);
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// Set active state
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m_bTTActive = TRUE;
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return TRUE;
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}
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//+----------------------------------------------------------------------------
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//
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// Function: CBalloonTip::HideBallonTip
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//
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// Synopsis: Hides a balloon tip
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//
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// Arguments: nothing
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//
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// Returns: nothing
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//
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// History: markcl Created Header 10/31/00
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//
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//+----------------------------------------------------------------------------
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BOOL CBalloonTip::HideBalloonTip()
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{
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// check active state && handle
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if(m_hwndTT && m_bTTActive)
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{
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// hide window
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SendMessageU(m_hwndTT,TTM_TRACKACTIVATE,(WPARAM) FALSE,(LPARAM) (LPTOOLINFO) &m_ti);
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m_bTTActive = FALSE;
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// force a repaint on parent window
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InvalidateRect(m_ti.hwnd,NULL,NULL);
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// destroy window
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DestroyWindow(m_hwndTT);
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m_hwndTT = NULL;
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return TRUE;
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}
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else
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{
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return FALSE;
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}
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}
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//+----------------------------------------------------------------------------
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//
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// Function: CBalloonTip::SubClassBalloonWndProc
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//
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// Synopsis: Subclassed wnd proc to trap the mouse button clicks on the balloon tip window
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//
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// Arguments: standard win32 window proc params
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//
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// Returns: standard win32 window proc return value
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//
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// History: markcl created 11/2/00
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//
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//+----------------------------------------------------------------------------
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LRESULT CALLBACK CBalloonTip::SubClassBalloonWndProc(HWND hwnd, UINT uMsg,
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WPARAM wParam, LPARAM lParam)
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{
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if ((uMsg == WM_LBUTTONDOWN) || (uMsg == WM_RBUTTONDOWN))
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{
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//
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// Get the object pointer saved by SetWindowLong
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//
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CBalloonTip* pBalloonTip = (CBalloonTip*)GetWindowLongU(hwnd, GWLP_USERDATA);
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MYDBGASSERT(pBalloonTip);
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if (pBalloonTip)
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{
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pBalloonTip->HideBalloonTip();
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}
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}
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//
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// Call the original window procedure for default processing.
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//
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return CallWindowProcU(m_pfnOrgBalloonWndProc, hwnd, uMsg, wParam, lParam);
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}
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