77 lines
3.4 KiB
C++
77 lines
3.4 KiB
C++
//
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// メッセージフィルタリングサポートクラス
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//
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#include "DebugOut.h"
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#include "App.h"
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#include "Wnd.h"
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#include "WndHook.h"
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// Instance
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CWndHook WndHook;
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BOOL CWndHook::m_bMsgFiltering = FALSE;
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BOOL CWndHook::m_bMsgFilter = FALSE;
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HHOOK CWndHook::m_hOldMsgFilter = NULL;
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// メッセージフィルタフックの初期化(ウインドウが初期化されてから呼び出す事)
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void CWndHook::Initialize()
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{
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m_hOldMsgFilter = ::SetWindowsHookEx( WH_MSGFILTER, (HOOKPROC)MessageFilterProc, NULL, ::GetCurrentThreadId() );
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}
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void CWndHook::Release()
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{
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if( m_hOldMsgFilter ) {
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::UnhookWindowsHookEx( m_hOldMsgFilter );
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m_hOldMsgFilter = NULL;
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}
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}
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// メッセージフィルタ処理(ダイアログは普通では来ないメッセージがあるため)
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LRESULT CALLBACK CWndHook::MessageFilterProc( INT code, WPARAM wParam, LPARAM lParam )
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{
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if( code < 0 ) {
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return ::CallNextHookEx( m_hOldMsgFilter, code, wParam, lParam );
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}
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if( m_bMsgFiltering && code == MSGF_DIALOGBOX ) {
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// 既にフィルタリング中か？
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if( m_bMsgFilter )
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return FALSE;
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m_bMsgFilter = TRUE;
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LPMSG lpMsg = (LPMSG)lParam;
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if( lpMsg->message >= WM_KEYFIRST && lpMsg->message <= WM_KEYLAST ) {
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if( WalkPreTranslateTree( lpMsg ) ) {
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m_bMsgFilter = FALSE;
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return 1L;
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}
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}
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m_bMsgFilter = FALSE;
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}
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return ::CallNextHookEx( m_hOldMsgFilter, code, wParam, lParam );
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// return FALSE;
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}
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BOOL CWndHook::WalkPreTranslateTree( MSG* lpMsg )
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{
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// メインフレームウインドウ
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HWND hWndStop = CApp::GetHWnd();
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// PreTranslateMessageを辿る
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for( HWND hWnd = lpMsg->hwnd; hWnd != NULL; hWnd = ::GetParent(hWnd) ) {
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if( hWnd == hWndStop )
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break;
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CWnd* pWnd = (CWnd*)::GetWindowLong( hWnd, GWL_USERDATA );
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if( pWnd ) {
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if( pWnd->PreTranslateMessage( lpMsg ) )
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return TRUE;
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}
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if( hWnd == hWndStop )
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break;
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}
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return FALSE;
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}
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