实现一个类似360的button

通过改写一个buttonst类，实现360效果的button。

主要可以完成：frame，hover,face效果，并且支持menu,tooltips

1）派生新的类QButton.添加虚函数，设置自绘style

void QButton::PreSubclassWindow() {// TODO: Add your specialized code here and/or call the base classUINT nBS;nBS = GetButtonStyle();// Set initial control typem_nTypeStyle = nBS & BS_TYPEMASK;// Check if this is a checkboxif (nBS & BS_CHECKBOX) m_bIsCheckBox = TRUE;// Set initial default state flagif (m_nTypeStyle == BS_DEFPUSHBUTTON){// Set default state for a default buttonm_bIsDefault = TRUE;// Adjust style for default buttonm_nTypeStyle = BS_PUSHBUTTON;} // If// You should not set the Owner Draw before this call// (don't use the resource editor "Owner Draw" or// ModifyStyle(0, BS_OWNERDRAW) before calling PreSubclassWindow() )ASSERT(m_nTypeStyle != BS_OWNERDRAW);// Switch to owner-drawModifyStyle(BS_TYPEMASK, BS_OWNERDRAW, SWP_FRAMECHANGED);CButton::PreSubclassWindow();}

2)添加一些控制的变量

void QButton::DrawItem(LPDRAWITEMSTRUCT lpDIS) {// TODO: Add your code to draw the specified itemCDC* pDC = CDC::FromHandle(lpDIS->hDC);CRect rc = lpDIS->rcItem;CBitmap bitmap;bitmap.CreateCompatibleBitmap(pDC, rc.Width(), rc.Height());CDC memdc;memdc.CreateCompatibleDC(pDC);memdc.SelectObject(bitmap);PaintBk(&memdc);memdc.SelectObject(GetStockObject(NULL_BRUSH));memdc.Rectangle(rc);if(m_bIsCheckBox){m_bIsPressed = (lpDIS->itemState & ODS_SELECTED) || (m_nCheck != 0);}else{m_bIsPressed = (lpDIS->itemState & ODS_SELECTED);}m_bIsFocused = (lpDIS->itemState & ODS_FOCUS);m_bIsDisabled = (lpDIS->itemState & ODS_DISABLED);if(m_bIsDisabled){if(m_pImage_disable != NULL)m_pImage_disable->Draw(memdc.m_hDC, rc);}else{if(m_bIsPressed){if(m_pImage_pressed != NULL){m_pImage_face->Draw(memdc.m_hDC, rc);CRect rc2;rc2 = rc;rc2.OffsetRect(2,2);m_pImage_pressed->Draw(memdc.m_hDC, rc);}}else if(m_bIsHovering){//draw hover imageif(m_pImage_hover != NULL && m_pImage_face != NULL){m_pImage_face->Draw(memdc.m_hDC, rc);m_pImage_hover->Draw(memdc.m_hDC, rc);}}else{if(m_pImage_face != NULL){m_pImage_face->Draw(memdc.m_hDC, rc);}}}pDC->BitBlt(0, 0, rc.Width(), rc.Height(), &memdc, 0, 0, SRCCOPY);TRACE("m_bIsPressed = %d\n", m_bIsPressed);}

直接用memdc绘制，frame,hover,face

3)使用cximage来加载png图片资源

BOOL QButton::LoadDisablePng(UINT nID, LPCTSTR cType){if(m_pImage_disable != NULL)delete m_pImage_disable;m_pImage_disable = new CxImage;return m_pImage_disable->LoadResource(FindResource(NULL,MAKEINTRESOURCE(nID),cType), CXIMAGE_FORMAT_PNG);}

4）添加mouse hover等支持。

5）测试程序

OnInitDialog(){m_btn.LoadFacePng(IDR_PNG8,"PNG");   m_btn.LoadPressPng(IDR_PNG10,"PNG"); // m_btn.LoadDisablePng(IDR_PNG10,"PNG");  m_btn.LoadHoverPng(IDR_PNG9,"PNG");m_btn.SetTooltipText("Hunter lv Tool tips!", TRUE);m_btn.SetMenu(IDR_MENU1, this->m_hWnd, TRUE);////QButton m_btn}

6)需要自己编译cximage的库，然后添加库文件，头文件就可以直接使用。