552 lines
16 KiB
C
552 lines
16 KiB
C
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/*
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* BUSY.C
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*
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* Implements the OleUIBusy function which invokes the "Server Busy"
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* dialog.
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*
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* Copyright (c)1992 Microsoft Corporation, All Right Reserved
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*/
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#define STRICT 1
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#include "ole2ui.h"
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#include "common.h"
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#include "utility.h"
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#include "busy.h"
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#include <ctype.h> // for tolower() and toupper()
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#ifndef WIN32
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#include <toolhelp.h>
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#endif
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/*
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* OleUIBusy
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*
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* Purpose:
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* Invokes the standard OLE "Server Busy" dialog box which
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* notifies the user that the server application is not receiving
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* messages. The dialog then asks the user to either cancel
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* the operation, switch to the task which is blocked, or continue
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* waiting.
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*
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* Parameters:
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* lpBZ LPOLEUIBUSY pointing to the in-out structure
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* for this dialog.
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*
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* Return Value:
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* OLEUI_BZERR_HTASKINVALID : Error
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* OLEUI_BZ_SWITCHTOSELECTED : Success, user selected "switch to"
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* OLEUI_BZ_RETRYSELECTED : Success, user selected "retry"
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* OLEUI_CANCEL : Success, user selected "cancel"
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*/
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STDAPI_(UINT) OleUIBusy(LPOLEUIBUSY lpOBZ)
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{
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UINT uRet = 0;
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HGLOBAL hMemDlg=NULL;
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#if !defined( WIN32 )
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// BUGBUG32: this is not yet ported to NT
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uRet=UStandardValidation((LPOLEUISTANDARD)lpOBZ, sizeof(OLEUIBUSY)
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, &hMemDlg);
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// Error out if the standard validation failed
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if (OLEUI_SUCCESS!=uRet)
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return uRet;
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// Validate HTASK
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if (!IsTask(lpOBZ->hTask))
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uRet = OLEUI_BZERR_HTASKINVALID;
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// Error out if our secondary validation failed
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if (OLEUI_ERR_STANDARDMIN <= uRet)
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{
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if (NULL!=hMemDlg)
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FreeResource(hMemDlg);
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return uRet;
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}
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// Invoke the dialog.
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uRet=UStandardInvocation(BusyDialogProc, (LPOLEUISTANDARD)lpOBZ,
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hMemDlg, MAKEINTRESOURCE(IDD_BUSY));
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#endif
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return uRet;
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}
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/*
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* BusyDialogProc
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*
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* Purpose:
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* Implements the OLE Busy dialog as invoked through the OleUIBusy function.
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*
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* Parameters:
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* Standard
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*
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* Return Value:
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* Standard
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*
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*/
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BOOL CALLBACK EXPORT BusyDialogProc(HWND hDlg, UINT iMsg, WPARAM wParam, LPARAM lParam)
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{
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LPBUSY lpBZ;
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UINT uRet = 0;
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//Declare Win16/Win32 compatible WM_COMMAND parameters.
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COMMANDPARAMS(wID, wCode, hWndMsg);
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//This will fail under WM_INITDIALOG, where we allocate it.
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lpBZ=(LPBUSY)LpvStandardEntry(hDlg, iMsg, wParam, lParam, &uRet);
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//If the hook processed the message, we're done.
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if (0!=uRet)
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return (BOOL)uRet;
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//Process the temination message
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if (iMsg==uMsgEndDialog)
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{
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BusyCleanup(hDlg);
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StandardCleanup(lpBZ, hDlg);
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EndDialog(hDlg, wParam);
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return TRUE;
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}
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// Process our special "close" message. If we get this message,
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// this means that the call got unblocked, so we need to
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// return OLEUI_BZ_CALLUNBLOCKED to our calling app.
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if (iMsg == uMsgCloseBusyDlg)
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{
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SendMessage(hDlg, uMsgEndDialog, OLEUI_BZ_CALLUNBLOCKED, 0L);
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return TRUE;
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}
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switch (iMsg)
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{
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case WM_INITDIALOG:
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FBusyInit(hDlg, wParam, lParam);
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return TRUE;
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case WM_ACTIVATEAPP:
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{
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/* try to bring down our Busy/NotResponding dialog as if
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** the user entered RETRY.
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*/
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BOOL fActive = (BOOL)wParam;
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if (fActive) {
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// If this is the app BUSY case, then bring down our
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// dialog when switching BACK to our app
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if (lpBZ && !(lpBZ->dwFlags & BZ_NOTRESPONDINGDIALOG))
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SendMessage(hDlg,uMsgEndDialog,OLEUI_BZ_RETRYSELECTED,0L);
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} else {
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// If this is the app NOT RESPONDING case, then bring down
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// our dialog when switching AWAY to another app
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if (lpBZ && (lpBZ->dwFlags & BZ_NOTRESPONDINGDIALOG))
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SendMessage(hDlg,uMsgEndDialog,OLEUI_BZ_RETRYSELECTED,0L);
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}
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return TRUE;
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}
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case WM_COMMAND:
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switch (wID)
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{
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case IDBZ_SWITCHTO:
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{
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BOOL fNotRespondingDlg =
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(BOOL)(lpBZ->dwFlags & BZ_NOTRESPONDINGDIALOG);
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// If user selects "Switch To...", switch activation
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// directly to the window which is causing the problem.
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if (IsWindow(lpBZ->hWndBlocked))
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MakeWindowActive(lpBZ->hWndBlocked);
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else
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StartTaskManager(); // Fail safe: Start Task Manager
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// If this is the app not responding case, then we want
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// to bring down the dialog when "SwitchTo" is selected.
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// If the app is busy (RetryRejectedCall situation) then
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// we do NOT want to bring down the dialog. this is
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// the OLE2.0 user model design.
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if (fNotRespondingDlg)
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SendMessage(hDlg, uMsgEndDialog, OLEUI_BZ_SWITCHTOSELECTED, 0L);
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break;
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}
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case IDBZ_RETRY:
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SendMessage(hDlg, uMsgEndDialog, OLEUI_BZ_RETRYSELECTED, 0L);
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break;
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case IDCANCEL:
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SendMessage(hDlg, uMsgEndDialog, OLEUI_CANCEL, 0L);
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break;
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}
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break;
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}
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return FALSE;
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}
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/*
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* FBusyInit
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*
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* Purpose:
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* WM_INITIDIALOG handler for the Busy dialog box.
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*
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* Parameters:
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* hDlg HWND of the dialog
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* wParam WPARAM of the message
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* lParam LPARAM of the message
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*
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* Return Value:
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* BOOL Value to return for WM_INITDIALOG.
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*/
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BOOL FBusyInit(HWND hDlg, WPARAM wParam, LPARAM lParam)
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{
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LPBUSY lpBZ;
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LPOLEUIBUSY lpOBZ;
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HFONT hFont;
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LPTSTR lpTaskName;
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LPTSTR lpWindowName;
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HICON hIcon;
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lpBZ=(LPBUSY)LpvStandardInit(hDlg, sizeof(OLEUIBUSY), TRUE, &hFont);
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// PvStandardInit sent a termination to us already.
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if (NULL==lpBZ)
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return FALSE;
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// Our original structure is in lParam
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lpOBZ = (LPOLEUIBUSY)lParam;
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// Copy it to our instance of the structure (in lpBZ)
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lpBZ->lpOBZ=lpOBZ;
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//Copy other information from lpOBZ that we might modify.
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lpBZ->dwFlags = lpOBZ->dwFlags;
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// Set default information
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lpBZ->hWndBlocked = NULL;
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// Insert HWND of our dialog into the address pointed to by
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// lphWndDialog. This can be used by the app who called
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// OleUIBusy to bring down the dialog with uMsgCloseBusyDialog
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if (lpOBZ->lphWndDialog &&
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!IsBadWritePtr((VOID FAR *)lpOBZ->lphWndDialog, sizeof(HWND)))
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{
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*lpOBZ->lphWndDialog = hDlg;
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}
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// Update text in text box --
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// GetTaskInfo will return two pointers, one to the task name
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// (file name) and one to the window name. We need to call
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// OleStdFree on these when we're done with them. We also
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// get the HWND which is blocked in this call
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//
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// In the case where this call fails, a default message should already
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// be present in the dialog template, so no action is needed
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if (GetTaskInfo(hDlg, lpOBZ->hTask, &lpTaskName, &lpWindowName, &lpBZ->hWndBlocked))
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{
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// Build string to present to user, place in IDBZ_MESSAGE1 control
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BuildBusyDialogString(hDlg, lpBZ->dwFlags, IDBZ_MESSAGE1, lpTaskName, lpWindowName);
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OleStdFree(lpTaskName);
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OleStdFree(lpWindowName);
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}
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// Update icon with the system "exclamation" icon
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hIcon = LoadIcon(NULL, IDI_EXCLAMATION);
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SendDlgItemMessage(hDlg, IDBZ_ICON, STM_SETICON, (WPARAM)hIcon, 0L);
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// Disable/Enable controls
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if ((lpBZ->dwFlags & BZ_DISABLECANCELBUTTON) ||
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(lpBZ->dwFlags & BZ_NOTRESPONDINGDIALOG)) // Disable cancel for "not responding" dialog
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EnableWindow(GetDlgItem(hDlg, IDCANCEL), FALSE);
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if (lpBZ->dwFlags & BZ_DISABLESWITCHTOBUTTON)
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EnableWindow(GetDlgItem(hDlg, IDBZ_SWITCHTO), FALSE);
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if (lpBZ->dwFlags & BZ_DISABLERETRYBUTTON)
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EnableWindow(GetDlgItem(hDlg, IDBZ_RETRY), FALSE);
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// Call the hook with lCustData in lParam
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UStandardHook((LPVOID)lpBZ, hDlg, WM_INITDIALOG, wParam, lpOBZ->lCustData);
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// Update caption if lpszCaption was specified
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if (lpBZ->lpOBZ->lpszCaption && !IsBadReadPtr(lpBZ->lpOBZ->lpszCaption, 1)
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&& lpBZ->lpOBZ->lpszCaption[0] != '\0')
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SetWindowText(hDlg, lpBZ->lpOBZ->lpszCaption);
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return TRUE;
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}
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/*
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* BuildBusyDialogString
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*
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* Purpose:
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* Builds the string that will be displayed in the dialog from the
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* task name and window name parameters.
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*
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* Parameters:
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* hDlg HWND of the dialog
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* dwFlags DWORD containing flags passed into dialog
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* iControl Control ID to place the text string
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* lpTaskName LPSTR pointing to name of task (e.g. C:\TEST\TEST.EXE)
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* lpWindowName LPSTR for name of window
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*
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* Caveats:
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* The caller of this function MUST de-allocate the lpTaskName and
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* lpWindowName pointers itself with OleStdFree
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*
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* Return Value:
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* void
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*/
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void BuildBusyDialogString(HWND hDlg, DWORD dwFlags, int iControl, LPTSTR lpTaskName, LPTSTR lpWindowName)
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{
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LPTSTR pszT, psz1, psz2, psz3;
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UINT cch;
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LPTSTR pszDot, pszSlash;
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UINT uiStringNum;
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/*
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* We need scratch memory for loading the stringtable string,
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* the task name, and constructing the final string. We therefore
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* allocate three buffers as large as the maximum message
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* length (512) plus the object type, guaranteeing that we have enough
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* in all cases.
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*/
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cch=512;
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// Use OLE-supplied allocation
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if ((pszT = OleStdMalloc((ULONG)(3*cch))) == NULL)
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return;
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psz1=pszT;
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psz2=psz1+cch;
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psz3=psz2+cch;
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// Parse base name out of path name, use psz2 for the task
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// name to display
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// In Win32, _fstrcpy is mapped to handle UNICODE stuff
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_fstrcpy(psz2, lpTaskName);
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pszDot = _fstrrchr(psz2, TEXT('.'));
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pszSlash = _fstrrchr(psz2, TEXT('\\')); // Find last backslash in path
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if (pszDot != NULL)
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#ifdef UNICODE
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*pszDot = TEXT('\0'); // Null terminate at the DOT
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#else
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*pszDot = '\0'; // Null terminate at the DOT
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#endif
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if (pszSlash != NULL)
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psz2 = pszSlash + 1; // Nuke everything up to this point
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#ifdef LOWERCASE_NAME
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// Compile this with /DLOWERCASE_NAME if you want the lower-case
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// module name to be displayed in the dialog rather than the
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// all-caps name.
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{
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int i,l;
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// Now, lowercase all letters except first one
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l = _fstrlen(psz2);
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for(i=0;i<l;i++)
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psz2[i] = tolower(psz2[i]);
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psz2[0] = toupper(psz2[0]);
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}
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#endif
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// Check size of lpWindowName. We can reasonably fit about 80
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// characters into the text control, so truncate more than 80 chars
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if (_fstrlen(lpWindowName)> 80)
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#ifdef UNICODE
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lpWindowName[80] = TEXT('\0');
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#else
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lpWindowName[80] = '\0';
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#endif
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// Load the format string out of stringtable, choose a different
|
||
|
|
// string depending on what flags are passed in to the dialog
|
||
|
|
if (dwFlags & BZ_NOTRESPONDINGDIALOG)
|
||
|
|
uiStringNum = IDS_BZRESULTTEXTNOTRESPONDING;
|
||
|
|
else
|
||
|
|
uiStringNum = IDS_BZRESULTTEXTBUSY;
|
||
|
|
|
||
|
|
if (LoadString(ghInst, uiStringNum, psz1, cch) == 0)
|
||
|
|
return;
|
||
|
|
|
||
|
|
// Build the string. The format string looks like this:
|
||
|
|
// "This action cannot be completed because the '%s' application
|
||
|
|
// (%s) is [busy | not responding]. Choose \"Switch To\" to activate '%s' and
|
||
|
|
// correct the problem."
|
||
|
|
|
||
|
|
wsprintf(psz3, psz1, (LPSTR)psz2, (LPTSTR)lpWindowName, (LPTSTR)psz2);
|
||
|
|
SetDlgItemText(hDlg, iControl, (LPTSTR)psz3);
|
||
|
|
OleStdFree(pszT);
|
||
|
|
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* BusyCleanup
|
||
|
|
*
|
||
|
|
* Purpose:
|
||
|
|
* Performs busy-specific cleanup before termination.
|
||
|
|
*
|
||
|
|
* Parameters:
|
||
|
|
* hDlg HWND of the dialog box so we can access controls.
|
||
|
|
*
|
||
|
|
* Return Value:
|
||
|
|
* None
|
||
|
|
*/
|
||
|
|
void BusyCleanup(HWND hDlg)
|
||
|
|
{
|
||
|
|
return;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* GetTaskInfo()
|
||
|
|
*
|
||
|
|
* Purpose: Gets information about the specified task and places the
|
||
|
|
* module name, window name and top-level HWND for the task in the specified
|
||
|
|
* pointers
|
||
|
|
*
|
||
|
|
* NOTE: The two string pointers allocated in this routine are
|
||
|
|
* the responsibility of the CALLER to de-allocate.
|
||
|
|
*
|
||
|
|
* Parameters:
|
||
|
|
* hWnd HWND who called this function
|
||
|
|
* htask HTASK which we want to find out more info about
|
||
|
|
* lplpszTaskName Location that the module name is returned
|
||
|
|
* lplpszWindowName Location where the window name is returned
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
BOOL GetTaskInfo(HWND hWnd, HTASK htask, LPTSTR FAR* lplpszTaskName, LPTSTR FAR*lplpszWindowName, HWND FAR*lphWnd)
|
||
|
|
{
|
||
|
|
BOOL fRet = FALSE;
|
||
|
|
#if !defined( WIN32 )
|
||
|
|
TASKENTRY te;
|
||
|
|
#endif
|
||
|
|
HWND hwndNext;
|
||
|
|
LPTSTR lpszTN = NULL;
|
||
|
|
LPTSTR lpszWN = NULL;
|
||
|
|
HWND hwndFind = NULL;
|
||
|
|
|
||
|
|
// Clear out return values in case of error
|
||
|
|
*lplpszTaskName = NULL;
|
||
|
|
*lplpszWindowName = NULL;
|
||
|
|
|
||
|
|
#if !defined( WIN32 )
|
||
|
|
te.dwSize = sizeof(TASKENTRY);
|
||
|
|
if (TaskFindHandle(&te, htask))
|
||
|
|
#endif
|
||
|
|
{
|
||
|
|
// Now, enumerate top-level windows in system
|
||
|
|
hwndNext = GetWindow(hWnd, GW_HWNDFIRST);
|
||
|
|
while (hwndNext)
|
||
|
|
{
|
||
|
|
// See if we can find a non-owned top level window whose
|
||
|
|
// hInstance matches the one we just got passed. If we find one,
|
||
|
|
// we can be fairly certain that this is the top-level window for
|
||
|
|
// the task which is blocked.
|
||
|
|
//
|
||
|
|
// REVIEW: Will this filter hold true for InProcServer DLL-created
|
||
|
|
// windows?
|
||
|
|
//
|
||
|
|
if ((hwndNext != hWnd) &&
|
||
|
|
#if !defined( WIN32 )
|
||
|
|
(GetWindowWord(hwndNext, GWW_HINSTANCE) == (WORD)te.hInst) &&
|
||
|
|
#else
|
||
|
|
((HTASK) GetWindowThreadProcessId(hwndNext,NULL) == htask) &&
|
||
|
|
#endif
|
||
|
|
(IsWindowVisible(hwndNext)) &&
|
||
|
|
!GetWindow(hwndNext, GW_OWNER))
|
||
|
|
{
|
||
|
|
// We found our window! Alloc space for new strings
|
||
|
|
if ((lpszTN = OleStdMalloc(OLEUI_CCHPATHMAX_SIZE)) == NULL)
|
||
|
|
return TRUE; // continue task window enumeration
|
||
|
|
|
||
|
|
if ((lpszWN = OleStdMalloc(OLEUI_CCHPATHMAX_SIZE)) == NULL)
|
||
|
|
return TRUE; // continue task window enumeration
|
||
|
|
|
||
|
|
// We found the window we were looking for, copy info to
|
||
|
|
// local vars
|
||
|
|
GetWindowText(hwndNext, lpszWN, OLEUI_CCHPATHMAX);
|
||
|
|
#if !defined( WIN32 )
|
||
|
|
LSTRCPYN(lpszTN, te.szModule, OLEUI_CCHPATHMAX);
|
||
|
|
#else
|
||
|
|
/* WIN32 NOTE: we are not able to get a module name
|
||
|
|
** given a thread process id on WIN32. the best we
|
||
|
|
** can do is use the window title as the module/app
|
||
|
|
** name.
|
||
|
|
*/
|
||
|
|
LSTRCPYN(lpszTN, lpszWN, OLEUI_CCHPATHMAX);
|
||
|
|
#endif
|
||
|
|
hwndFind = hwndNext;
|
||
|
|
|
||
|
|
fRet = TRUE;
|
||
|
|
goto OKDone;
|
||
|
|
}
|
||
|
|
|
||
|
|
hwndNext = GetWindow(hwndNext, GW_HWNDNEXT);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
OKDone:
|
||
|
|
|
||
|
|
// OK, everything was successful. Set string pointers to point to
|
||
|
|
// our data.
|
||
|
|
|
||
|
|
*lplpszTaskName = lpszTN;
|
||
|
|
*lplpszWindowName = lpszWN;
|
||
|
|
*lphWnd = hwndFind;
|
||
|
|
|
||
|
|
return fRet;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* StartTaskManager()
|
||
|
|
*
|
||
|
|
* Purpose: Starts Task Manager. Used to bring up task manager to
|
||
|
|
* assist in switching to a given blocked task.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
StartTaskManager()
|
||
|
|
{
|
||
|
|
WinExec("taskman.exe", SW_SHOW);
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* MakeWindowActive()
|
||
|
|
*
|
||
|
|
* Purpose: Makes specified window the active window.
|
||
|
|
*
|
||
|
|
*/
|
||
|
|
|
||
|
|
void MakeWindowActive(HWND hWndSwitchTo)
|
||
|
|
{
|
||
|
|
// Move the new window to the top of the Z-order
|
||
|
|
SetWindowPos(hWndSwitchTo, HWND_TOP, 0, 0, 0, 0,
|
||
|
|
SWP_NOSIZE | SWP_NOMOVE);
|
||
|
|
|
||
|
|
// If it's iconic, we need to restore it.
|
||
|
|
if (IsIconic(hWndSwitchTo))
|
||
|
|
ShowWindow(hWndSwitchTo, SW_RESTORE);
|
||
|
|
}
|