带图标的edit类.rar_edit 例子_edit图标_图标 Edit_图标Edit_编辑框

/* ========================================================================== CIconEdit Author : Johan Rosengren, Abstrakt Mekanik AB Date : 2004-03-09 Purpose : The class represents an editbox with an icon to the left Description : The class sets the edit rect of the editbox, and adds a CStatic derived control painting the icon to the left of the text. Usage : As a CEdit. The class can be instantiated both dynamically and from a dialog template. The edit box must have the ES_MULTILINE style set (as the edit rect will not work otherwise). The icon can either be set as an icon handle, with CIconEdit::SetIcon(HICON icon), or directly from the application resources with CIconEdit::SetIcon(UINT iconres). In the latter case, the icon will be loaded and deleted by the class, in the former, the caller must delete it. Note that SetWindowPlacement will destroy the edit rect, if the control needs to be moved or resized, MoveWindow or SetWindowPos should be used instead. ========================================================================*/ #include "stdafx.h" #include "IconEdit.h" #ifdef _DEBUG #define new DEBUG_NEW #undef THIS_FILE static char THIS_FILE[] = __FILE__; #endif ///////////////////////////////////////////////////////////////////////////// // CIconEdit CIconEdit::CIconEdit() /*============================================================ Function : CIconEdit::CIconEdit Description : constructor Return : void Parameters : none Usage : ============================================================*/ { m_internalIcon = NULL; m_icon.m_hWnd = NULL; } CIconEdit::~CIconEdit() /*============================================================ Function : CIconEdit::~CIconEdit Description : Return : destructor - Parameters : Usage : ============================================================*/ { // Clean up if( m_internalIcon ) ::DestroyIcon( m_internalIcon ); } BEGIN_MESSAGE_MAP(CIconEdit, CEdit) ON_MESSAGE(WM_SETFONT, OnSetFont) ON_WM_SIZE() END_MESSAGE_MAP() void CIconEdit::PreSubclassWindow() /*============================================================ Function : CIconEdit::PreSubclassWindow Description : This function is called before the control is subclassed for a control on a dialog template, and during creation for dynamically created controls. Return : void Parameters : Usage : ============================================================*/ { // We must have a multiline edit // to be able to set the edit rect ASSERT( GetStyle() & ES_MULTILINE ); // We set the edit rect Prepare(); } ///////////////////////////////////////////////////////////////////////////// // CIconEdit implementation void CIconEdit::SetIcon( HICON icon ) /*============================================================ Function : CIconEdit::SetIcon Description : Sets a new icon and updates the control Return : void Parameters : HICON icon - Handle to the icon Usage : The caller must destroy the icon ============================================================*/ { // Update the icon control m_icon.SetIcon( icon ); } void CIconEdit::SetIcon( UINT iconres ) /*============================================================ Function : CIconEdit::SetIcon Description : Sets a new icon and updates the control Return : void Parameters : UINT iconres - Resource id of the icon Usage : The class will load and destroy the icon. ============================================================*/ { if( !m_icon.m_hWnd ) { // If the icon window doesn't exist, // we create it CRect editRect; GetRect( &editRect ); CRect clientRect; GetClientRect( &clientRect ); CRect iconRect( 0, 0, editRect.left, clientRect.Height() ); if(m_icon.m_hWnd==NULL) m_icon.Create("", WS_CHILD | WS_VISIBLE, iconRect, this, 1 ); } // If we already have an icon, we destroy it if( m_internalIcon ) ::DestroyIcon( m_internalIcon ); // Loading the new icon m_internalIcon = ( HICON ) ::LoadImage( AfxGetResourceHandle(), MAKEINTRESOURCE( iconres ), IMAGE_ICON, 16, 16, LR_DEFAULTCOLOR ); ASSERT( m_internalIcon != NULL ); // Update the icon control m_icon.SetIcon( m_internalIcon ); } ///////////////////////////////////////////////////////////////////////////// // CIconEdit implementation void CIconEdit::Prepare() /*============================================================ Function : CIconEdit::Prepare Description : Sets the edit rect of the control Return : void Parameters : none Usage : Internal function. Call as soon as the edit rect needs to be (re)established ============================================================*/ { // Creating the edit rect int width = GetSystemMetrics( SM_CXSMICON ); CRect editRect; GetRect( &editRect ); editRect.left += width + 6; SetRect( &editRect ); } LRESULT CIconEdit::OnSetFont( WPARAM wParam, LPARAM lParam ) /*============================================================ Function : CIconEdit::OnSetFont Description : Mapped to WM_SETFONT Return : LRESULT - Parameters : WPARAM wParam - From Windows LPARAM lParam - From Windows Usage : Called from Windows ============================================================*/ { DefWindowProc( WM_SETFONT, wParam, lParam ); // We reset the edit rect Prepare(); return 0; } void CIconEdit::OnSize( UINT nType, int cx, int cy ) /*============================================================ Function : CIconEdit::OnSize Description : Mapped to WM_SIZE Return : void Parameters : UINT nType - From Windows int cx - From Windows int cy - From Windows Usage : Called from Windows ============================================================*/ { CEdit::OnSize( nType, cx, cy ); // We reset the edit rect Prepare(); } ///////////////////////////////////////////////////////////////////////////// // CIconWnd CIconWnd::CIconWnd() /*============================================================ Function : CIconWnd::CIconWnd Description : constructor Return : void Parameters : Usage : ============================================================*/ { m_icon = NULL; } CIconWnd::~CIconWnd() /*============================================================ Function : CIconWnd::~CIconWnd Description : destructor Return : void Parameters : none Usage : ============================================================*/ { } BEGIN_MESSAGE_MAP(CIconWnd, CStatic) ON_WM_PAINT() ON_WM_ERASEBKGND() END_MESSAGE_MAP() ///////////////////////////////////////////////////////////////////////////// // CIconWnd message handlers void CIconWnd::OnPaint() /*============================================================ Function : CIconWnd::OnPaint Description : Mapped to WM_PAINT. Draws the icon with the small icon size (regardless of original) Return : void Parameters : none Usage : Called from Windows ============================================================*/ { CPaintDC dc( this ); if( m_icon ) { CRect rect; GetClientRect( &rect ); // Clearing the background dc.FillSolidRect( rect, dc.GetBkColor() ); // Drawing the icon int width = GetSystemMetrics( SM_CXSMICON ); int height = GetSystemMetrics( SM_CYSMICON ); ::DrawIconEx( dc.m_hDC, 1, 1, m_icon, width, height, 0, NULL, DI_NORMAL ); } } BOOL CIconWnd::OnEraseBkgnd( CDC* ) /*====================================