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213
libPPUI/CEditWithButtons.h
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213
libPPUI/CEditWithButtons.h
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#pragma once
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#include <list>
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#include <string>
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#include <functional>
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#include <memory>
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#include "WTL-PP.h"
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#include "CButtonLite.h"
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class CEditWithButtons : public CEditPPHooks {
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public:
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CEditWithButtons(::ATL::CMessageMap * hookMM = nullptr, int hookMMID = 0) : CEditPPHooks(hookMM, hookMMID), m_fixedWidth() {}
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enum {
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MSG_CHECKCONDITIONS = WM_USER+13,
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MSG_CHECKCONDITIONS_MAGIC1 = 0xaec66f0c,
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MSG_CHECKCONDITIONS_MAGIC2 = 0x180c2f35,
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};
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BEGIN_MSG_MAP_EX(CEditWithButtons)
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MSG_WM_SETFONT(OnSetFont)
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MSG_WM_WINDOWPOSCHANGED(OnPosChanged)
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MSG_WM_CTLCOLORBTN(OnColorBtn)
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MESSAGE_HANDLER_EX(WM_GETDLGCODE, OnGetDlgCode)
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MSG_WM_KEYDOWN(OnKeyDown)
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MSG_WM_CHAR(OnChar)
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// MSG_WM_SETFOCUS( OnSetFocus )
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// MSG_WM_KILLFOCUS( OnKillFocus )
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MSG_WM_ENABLE(OnEnable)
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MSG_WM_SETTEXT( OnSetText )
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MESSAGE_HANDLER_EX(WM_PAINT, CheckConditionsTrigger)
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MESSAGE_HANDLER_EX(WM_CUT, CheckConditionsTrigger)
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MESSAGE_HANDLER_EX(WM_PASTE, CheckConditionsTrigger)
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MESSAGE_HANDLER_EX(MSG_CHECKCONDITIONS, OnCheckConditions)
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CHAIN_MSG_MAP(CEditPPHooks)
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END_MSG_MAP()
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void SubclassWindow( HWND wnd ) {
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CEditPPHooks::SubclassWindow( wnd );
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this->ModifyStyle(0, WS_CLIPCHILDREN);
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RefreshButtons();
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}
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typedef std::function<void () > handler_t;
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typedef std::function<bool (const wchar_t*) > condition_t;
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void AddMoreButton( std::function<void ()> f );
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void AddClearButton( const wchar_t * clearVal = L"", bool bHandleEsc = false);
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void AddButton( const wchar_t * str, handler_t handler, condition_t condition = nullptr, const wchar_t * drawAlternateText = nullptr );
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static unsigned DefaultFixedWidth() {return GetSystemMetrics(SM_CXVSCROLL) * 3 / 4;}
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void SetFixedWidth(unsigned fw = DefaultFixedWidth() ) {
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m_fixedWidth = fw;
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RefreshButtons();
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}
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CRect RectOfButton( const wchar_t * text );
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void Invalidate() {
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__super::Invalidate();
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for( auto i = m_buttons.begin(); i != m_buttons.end(); ++i ) {
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if (i->wnd != NULL) i->wnd.Invalidate();
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}
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}
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void SetShellFolderAutoComplete() {
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SetShellAutoComplete(SHACF_FILESYS_DIRS);
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}
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void SetShellFileAutoComplete() {
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SetShellAutoComplete(SHACF_FILESYS_ONLY);
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}
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void SetShellAutoComplete(DWORD flags) {
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SHAutoComplete(*this, flags);
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SetHasAutoComplete();
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}
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void SetHasAutoComplete(bool bValue = true) {
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m_hasAutoComplete = bValue;
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}
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void RefreshConditions(const wchar_t * newText = nullptr);
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private:
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LRESULT OnCheckConditions( UINT msg, WPARAM wp, LPARAM lp ) {
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if ( msg == MSG_CHECKCONDITIONS && wp == MSG_CHECKCONDITIONS_MAGIC1 && lp == MSG_CHECKCONDITIONS_MAGIC2 ) {
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this->RefreshConditions();
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} else {
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SetMsgHandled(FALSE);
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}
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return 0;
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}
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bool HaveConditions() {
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for( auto i = m_buttons.begin(); i != m_buttons.end(); ++i ) {
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if ( i->condition ) return true;
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}
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return false;
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}
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void PostCheckConditions() {
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if ( HaveConditions() ) {
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PostMessage( MSG_CHECKCONDITIONS, MSG_CHECKCONDITIONS_MAGIC1, MSG_CHECKCONDITIONS_MAGIC2 );
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}
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}
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LRESULT CheckConditionsTrigger( UINT, WPARAM, LPARAM ) {
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PostCheckConditions();
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SetMsgHandled(FALSE);
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return 0;
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}
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int OnSetText(LPCTSTR lpstrText) {
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PostCheckConditions();
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SetMsgHandled(FALSE);
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return 0;
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}
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void OnEnable(BOOL bEnable) {
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for( auto i = m_buttons.begin(); i != m_buttons.end(); ++ i ) {
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if ( i->wnd != NULL ) {
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i->wnd.EnableWindow( bEnable );
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}
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}
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SetMsgHandled(FALSE);
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}
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void OnChar(UINT nChar, UINT nRepCnt, UINT nFlags) {
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if (nChar == VK_TAB ) {
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return;
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}
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PostCheckConditions();
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SetMsgHandled(FALSE);
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}
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void OnKeyDown(UINT nChar, UINT nRepCnt, UINT nFlags) {
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if ( nChar == VK_TAB ) {
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return;
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}
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SetMsgHandled(FALSE);
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}
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bool canStealTab() {
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if (m_hasAutoComplete) return false;
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if (IsShiftPressed()) return false;
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if (m_buttons.size() == 0) return false;
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return true;
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}
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UINT OnGetDlgCode(UINT, WPARAM wp, LPARAM lp) {
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if ( wp == VK_TAB && canStealTab() ) {
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for (auto i = m_buttons.begin(); i != m_buttons.end(); ++ i ) {
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if ( i->visible ) {
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TabFocusThis(i->wnd);
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return DLGC_WANTTAB;
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}
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}
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}
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SetMsgHandled(FALSE); return 0;
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}
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void OnSetFocus(HWND) {
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this->ModifyStyleEx(0, WS_EX_CONTROLPARENT ); SetMsgHandled(FALSE);
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}
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void OnKillFocus(HWND) {
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this->ModifyStyleEx(WS_EX_CONTROLPARENT, 0 ); SetMsgHandled(FALSE);
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}
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HBRUSH OnColorBtn(CDCHandle dc, CButton button) {
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if ( (this->GetStyle() & ES_READONLY) != 0 || !this->IsWindowEnabled() ) {
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return (HBRUSH) GetParent().SendMessage( WM_CTLCOLORSTATIC, (WPARAM) dc.m_hDC, (LPARAM) m_hWnd );
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} else {
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return (HBRUSH) GetParent().SendMessage( WM_CTLCOLOREDIT, (WPARAM) dc.m_hDC, (LPARAM) m_hWnd );
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}
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}
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void OnPosChanged(LPWINDOWPOS lpWndPos) {
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Layout(); SetMsgHandled(FALSE);
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}
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struct Button_t {
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std::wstring title, titleDraw;
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handler_t handler;
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std::shared_ptr<CButtonLite> buttonImpl;
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CWindow wnd;
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bool visible;
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condition_t condition;
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};
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void OnSetFont(CFontHandle font, BOOL bRedraw) {
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CRect rc;
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if (GetClientRect(&rc)) {
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Layout(rc.Size(), font);
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}
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SetMsgHandled(FALSE);
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}
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void RefreshButtons() {
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if ( m_hWnd != NULL && m_buttons.size() > 0 ) {
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Layout();
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}
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}
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void Layout( ) {
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CRect rc;
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if (GetClientRect(&rc)) {
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Layout(rc.Size(), NULL);
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}
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}
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static bool IsShiftPressed() {
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return (GetKeyState(VK_SHIFT) & 0x8000) ? true : false;
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}
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CWindow FindDialog() {
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return GetParent();
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}
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void TabFocusThis(HWND wnd) {
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FindDialog().PostMessage(WM_NEXTDLGCTL, (WPARAM) wnd, TRUE );
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}
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void TabFocusPrevNext(bool bPrev) {
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FindDialog().PostMessage(WM_NEXTDLGCTL, bPrev ? TRUE : FALSE, FALSE);
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}
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void TabCycleButtons(HWND wnd);
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bool ButtonWantTab( HWND wnd );
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bool EvalCondition( Button_t & btn, const wchar_t * newText );
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void Layout(CSize size, CFontHandle fontSetMe);
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unsigned MeasureButton(Button_t const & button );
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unsigned m_fixedWidth;
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std::list< Button_t > m_buttons;
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bool m_hasAutoComplete = false;
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};
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