//?CheckComboBox.cpp?
//
//?Written?by?Magnus?Egelberg?（magnus.egelberg@lundalogik.se）
//
//?Copyright?（C）?1999?Lundalogik?AB?Sweden.?All?rights?reserved.
//?
//

#include?“stdafx.h“
#include?“CheckCombo.h“
#include?“CheckComboBox.h“

#ifdef?_DEBUG
#define?new?DEBUG_NEW
#undef?THIS_FILE
static?char?THIS_FILE[]?=?__FILE__;
#endif

static?WNDPROC?m_pWndProc?=?0;
static?CCheckComboBox?*m_pComboBox?=?0;


BEGIN_MESSAGE_MAP（CCheckComboBox?CComboBox）
	//{{AFX_MSG_MAP（CCheckComboBox）
	ON_MESSAGE（WM_CTLCOLORLISTBOX?OnCtlColorListBox）
	ON_MESSAGE（WM_GETTEXT?OnGetText）
	ON_MESSAGE（WM_GETTEXTLENGTH?OnGetTextLength）
	ON_CONTROL_REFLECT（CBN_DROPDOWN?ondropDown）
	//}}AFX_MSG_MAP
END_MESSAGE_MAP（）


//
//?The?subclassed?COMBOLBOX?message?handler
//
extern?“C“?LRESULT?FAR?PASCAL?ComboBoxListBoxProc（HWND?hWnd?UINT?nMsg?WPARAM?wParam?LPARAM?lParam）
{

	switch?（nMsg）?{

		
		case?WM_RBUTTONDOWN:?{
			//?If?you?want?to?select?all/unselect?all?using?the
			//?right?button?remove?this?ifdef.?Personally?I?don‘t?really?like?it
			#if?FALSE

				if?（m_pComboBox?!=?0）?{
					INT?nCount?=?m_pComboBox->GetCount（）;
					INT?nSelCount?=?0;

					for?（INT?i?=?0;?i?						if?（m_pComboBox->GetCheck（i））
							nSelCount++;
					}


					m_pComboBox->SelectAll（nSelCount?!=?nCount）;

					//?Make?sure?to?invalidate?this?window?as?well
					InvalidateRect（hWnd?0?FALSE）;
					m_pComboBox->GetParent（）->SendMessage（WM_COMMAND?MAKELONG（GetWindowLong（m_pComboBox->m_hWnd?GWL_ID）?CBN_SELCHANGE）?（LPARAM）m_pComboBox->m_hWnd）;

				}
			#endif

			break;
		}

		//?Make?the?combobox?always?return?-1?as?the?current?selection.?This
		//?causes?the?lpDrawItemStruct->itemID?in?DrawItem（）?to?be?-1
		//?when?the?always-visible-portion?of?the?combo?is?drawn
		case?LB_GETCURSEL:?{
			return?-1;
		}


		case?WM_CHAR:?{
			if?（wParam?==?VK_SPACE）?{
				//?Get?the?current?selection
				INT?nIndex?=?CallWindowProcA（m_pWndProc?hWnd?LB_GETCURSEL?wParam?lParam）;

				CRect?rcItem;
				SendMessage（hWnd?LB_GETITEMRECT?nIndex?（LONG）（VOID?*）&rcItem）;
				InvalidateRect（hWnd?rcItem?FALSE）;

				//?Invert?the?check?mark
				m_pComboBox->SetCheck（nIndex?!m_pComboBox->GetCheck（nIndex））;

				//?Notify?that?selection?has?changed
				m_pComboBox->GetParent（）->SendMessage（WM_COMMAND?MAKELONG（GetWindowLong（m_pComboBox->m_hWnd?GWL_ID）?CBN_SELCHANGE）?（LPARAM）m_pComboBox->m_hWnd）;
				return?0;
			}

			break;
		}


		case?WM_LBUTTONDOWN:?{

			CRect?rcClient;
			GetClientRect（hWnd?rcClient）;

			CPoint?pt;
			pt.x?=?LOWORD（lParam）;
			pt.y?=?HIWORD（lParam）;


			if?（PtInRect（rcClient?pt））?{
				INT?nItemHeight?=?SendMessage（hWnd?LB_GETITEMHEIGHT?0?0）;
				INT?nTopIndex???=?SendMessage（hWnd?LB_GETTOPINDEX?0?0）;

				//?Compute?which?index?to?check/uncheck
				INT?nIndex?=?nTopIndex?+?pt.y?/?nItemHeight;

				CRect?rcItem;
				SendMessage（hWnd?LB_GETITEMR

?屬性????????????大小?????日期????時(shí)間???名稱(chēng)
-----------?---------??----------?-----??----
?????目錄???????????0??2018-01-09?15:37??CheckComboBox重繪\
?????目錄???????????0??2018-01-09?15:36??CheckComboBox重繪\CheckComboBox\
?????目錄???????????0??2018-01-09?15:37??CheckComboBox重繪\CheckComboBox1\
?????文件???????25672??2017-12-25?16:08??CheckComboBox重繪\CheckComboBox1\CheckComboBox.cpp
?????文件????????2967??2017-10-30?10:11??CheckComboBox重繪\CheckComboBox1\CheckComboBox.h
?????文件????????6513??2018-01-09?15:38??CheckComboBox重繪\CheckComboBox1\截圖.jpg
?????目錄???????????0??2018-01-09?15:40??CheckComboBox重繪\CheckComboBox2\
?????文件???????26637??2017-12-26?18:13??CheckComboBox重繪\CheckComboBox2\CheckComboCtrl.cpp
?????文件????????2882??2017-12-26?18:17??CheckComboBox重繪\CheckComboBox2\CheckComboCtrl.h
?????文件????????7298??2018-01-09?15:39??CheckComboBox重繪\CheckComboBox2\截圖.jpg
?????文件????????9920??2017-12-25?14:06??CheckComboBox重繪\CheckComboBox\CheckComboBox.cpp
?????文件????????1800??1999-11-16?13:29??CheckComboBox重繪\CheckComboBox\CheckComboBox.h
?????文件???????11628??2018-01-09?15:34??CheckComboBox重繪\CheckComboBox\截圖.jpg