222 lines
4.5 KiB
C++
222 lines
4.5 KiB
C++
/*++
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Copyright (c) 2001 Microsoft Corporation
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Module Name:
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WPS2000.cpp
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Abstract:
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This in in fact NT user bug, see whistler bug 359407's attached mail for
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detail. The problem is NT user's MSGFILTER hook is not dbcs-enabled, the dbcs
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char code sent to ANSI edit control actually got reverted, 2nd byte first
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followed by first byte. The code path seems only hit when edit control is
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ANSI window and used in OLE server.
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Notes:
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This is an app specific shim.
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History:
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06/02/2001 xiaoz Created
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--*/
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#include "precomp.h"
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IMPLEMENT_SHIM_BEGIN(WPS2000)
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#include "ShimHookMacro.h"
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APIHOOK_ENUM_BEGIN
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APIHOOK_ENUM_ENTRY(CreateDialogIndirectParamA)
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APIHOOK_ENUM_END
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//
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// Global windowproc for subclassed Edit Control
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//
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WNDPROC g_lpWndProc = NULL;
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//
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// CONSTANT for how we were being launched
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//
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#define EMBEDDIND_STATUS_UNKOWN 0 // We have not checked whether how we were launched
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#define EMBEDDIND_STATUS_YES 1 // We were launched as an OLE object
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#define EMBEDDIND_STATUS_NO 2 // We were launched as stand-alone exe file
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//
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// Global variable to keep our status
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//
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UINT g_nEmbeddingObject =EMBEDDIND_STATUS_UNKOWN;
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/*++
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The subclassed edit windowproc that we use to exchange the 1st byte and 2nd byte
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of a DBCS char
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--*/
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LRESULT
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CALLBACK
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WindowProcA(
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HWND hWnd,
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UINT uMsg,
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WPARAM wParam,
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LPARAM lParam
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)
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{
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BYTE bHi,bLo;
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//
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// If it' not a WM_IME_CHAR message, ignore it
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//
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if (uMsg == WM_IME_CHAR)
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{
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//
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// Exchange the 1st byte with 2nd byte
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//
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bHi = HIBYTE(wParam);
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bLo = LOBYTE(wParam);
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wParam = bLo*256 + bHi;
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}
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return CallWindowProcA(g_lpWndProc, hWnd, uMsg, wParam, lParam);
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}
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/*++
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Enumerate the control on the dlg and if is editbox, subclass it.
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--*/
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BOOL
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CALLBACK
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EnumChildProc(
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HWND hwnd,
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LPARAM lParam
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)
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{
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CString cstrEdit(L"Edit");
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WCHAR szClassName[MAX_PATH];
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WNDPROC lpWndProc;
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GetClassName(hwnd, szClassName, MAX_PATH);
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//
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// Only care Edit Control
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//
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if (!cstrEdit.CompareNoCase(szClassName))
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{
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//
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// There are 3 Edit Control on thsi speficic dlg,all standard one
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// having same WinProc Address
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//
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lpWndProc = (WNDPROC) GetWindowLongPtrA(hwnd, GWLP_WNDPROC);
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if (lpWndProc)
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{
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g_lpWndProc = lpWndProc;
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SetWindowLongPtrA(hwnd, GWLP_WNDPROC, (LONG_PTR)WindowProcA);
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LOGN(eDbgLevelWarning, "Edit Control Sub-Classed");
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}
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}
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return TRUE;
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}
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/*++
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Check commandline for a sub-string "-Embedding".
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--*/
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UINT GetAppLaunchMethod()
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{
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WCHAR *pwstrCmdLine;
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//
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// If we have not check this, then do it
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//
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if (g_nEmbeddingObject == EMBEDDIND_STATUS_UNKOWN)
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{
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CString cStrCmdLineRightPart;
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CString cStrCmdLine = GetCommandLine();
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CString cstrEmbeded(L"-Embedding");
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cStrCmdLineRightPart = cStrCmdLine.Right(cstrEmbeded.GetLength());
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if (cStrCmdLineRightPart.CompareNoCase(cstrEmbeded))
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{
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g_nEmbeddingObject = EMBEDDIND_STATUS_NO;
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}
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else
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{
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g_nEmbeddingObject = EMBEDDIND_STATUS_YES;
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}
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}
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return (g_nEmbeddingObject);
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}
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/*++
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Hook CreateDialogIndirectParamA to find this specific dlg and subclass
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edit control on it
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--*/
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HWND
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APIHOOK(CreateDialogIndirectParamA)(
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HINSTANCE hInstance,
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LPCDLGTEMPLATE lpTemplate,
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HWND hWndParent,
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DLGPROC lpDialogFunc,
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LPARAM lParamInit
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)
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{
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HWND hDlg;
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WCHAR wszCaption[MAX_PATH];
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WCHAR wszTitle[] = { (WCHAR)0x6587, (WCHAR)0x672c, (WCHAR)0x8f93, (WCHAR)0x5165, (WCHAR)0x0000 };
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CString cstrCaption;
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hDlg = ORIGINAL_API(CreateDialogIndirectParamA)(hInstance, lpTemplate,
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hWndParent, lpDialogFunc, lParamInit);
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//
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// If dlg can not be created or not launched as OLE server, ignore it
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//
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if (!hDlg || (EMBEDDIND_STATUS_YES != GetAppLaunchMethod()))
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{
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goto End;
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}
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//
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// Try to get caption and see if that's the dlg we are interested
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//
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if (!GetWindowText(hDlg, wszCaption, MAX_PATH))
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{
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goto End;
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}
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cstrCaption = wszCaption;
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if (!cstrCaption.CompareNoCase(wszTitle))
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{
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EnumChildWindows(hDlg, EnumChildProc, NULL);
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}
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End:
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return hDlg;
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}
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/*++
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Register hooked functions
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--*/
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HOOK_BEGIN
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APIHOOK_ENTRY(USER32.DLL, CreateDialogIndirectParamA)
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HOOK_END
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IMPLEMENT_SHIM_END
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