void CWndShadow::Update(HWND hParent)
{
//int ShadSize = 5;
//int Multi = 100 / ShadSize;
RECT WndRect;
GetWindowRect(hParent, &WndRect);
int nShadWndWid = WndRect.right - WndRect.left + m_nSize * 2;
int nShadWndHei = WndRect.bottom - WndRect.top + m_nSize * 2;
// Create the alpha blending bitmap
BITMAPINFO bmi; // bitmap header
ZeroMemory(&bmi, sizeof(BITMAPINFO));
bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi.bmiHeader.biWidth = nShadWndWid;
bmi.bmiHeader.biHeight = nShadWndHei;
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biBitCount = 32; // four 8-bit components
bmi.bmiHeader.biCompression = BI_RGB;
bmi.bmiHeader.biSizeImage = nShadWndWid * nShadWndHei * 4;
BYTE *pvBits; // pointer to DIB section
HBITMAP hbitmap = CreateDIBSection(NULL, &bmi, DIB_RGB_COLORS, (void **)&pvBits, NULL, 0);
ZeroMemory(pvBits, bmi.bmiHeader.biSizeImage);
MakeShadow((UINT32 *)pvBits, hParent, &WndRect);
HDC hMemDC = CreateCompatibleDC(NULL);
HBITMAP hOriBmp = (HBITMAP)SelectObject(hMemDC, hbitmap);
POINT ptDst = { WndRect.left + m_nxOffset - m_nSize, WndRect.top + m_nyOffset - m_nSize };
POINT ptSrc = { 0, 0 };
SIZE WndSize = { nShadWndWid, nShadWndHei };
BLENDFUNCTION blendPixelFunction = { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
MoveWindow(m_hWnd, ptDst.x, ptDst.y, nShadWndWid, nShadWndHei, FALSE);
BOOL bRet = s_UpdateLayeredWindow(m_hWnd, NULL, &ptDst, &WndSize, hMemDC,
&ptSrc, 0, &blendPixelFunction, ULW_ALPHA);
_ASSERT(bRet); // something was wrong....
// Delete used resources
SelectObject(hMemDC, hOriBmp);
DeleteObject(hbitmap);
DeleteDC(hMemDC);
}
void CWndShadow::Update(HWND hParent)
{
//int ShadSize = 5;
//int Multi = 100 / ShadSize;
RECT WndRect;
GetWindowRect(hParent, &WndRect);
int nShadWndWid = 0;
int nShadWndHei = 0;
if(m_pShadowImage != NULL)
{
// 九宫格方式,计算阴影窗口总的宽度和高度
nShadWndWid = WndRect.right - WndRect.left + m_nShadowWLT + m_nShadowWRB;
nShadWndHei = WndRect.bottom - WndRect.top + m_nShadowHLT + m_nShadowHRB;
}else
{
// 算法阴影方式,计算阴影窗口总的宽度和高度
nShadWndWid = WndRect.right - WndRect.left + m_nSize * 2;
nShadWndHei = WndRect.bottom - WndRect.top + m_nSize * 2;
}
// Create the alpha blending bitmap
BITMAPINFO bmi; // bitmap header
ZeroMemory(&bmi, sizeof(BITMAPINFO));
bmi.bmiHeader.biSize = sizeof(BITMAPINFOHEADER);
bmi.bmiHeader.biWidth = nShadWndWid;
bmi.bmiHeader.biHeight = nShadWndHei;
bmi.bmiHeader.biPlanes = 1;
bmi.bmiHeader.biBitCount = 32; // four 8-bit components
bmi.bmiHeader.biCompression = BI_RGB;
bmi.bmiHeader.biSizeImage = nShadWndWid * nShadWndHei * 4;
BYTE *pvBits; // pointer to DIB section
HBITMAP hbitmap = CreateDIBSection(NULL, &bmi, DIB_RGB_COLORS, (void **)&pvBits, NULL, 0);
HDC hMemDC = CreateCompatibleDC(NULL);
HBITMAP hOriBmp = (HBITMAP)SelectObject(hMemDC, hbitmap);
if(m_pShadowImage != NULL)
{
// 九宫格方式画阴影图片
Graphics graphics(hMemDC);
CRect rcTemp(0, 0, nShadWndWid, nShadWndHei);
DrawImageFrameMID(graphics, m_pShadowImage, rcTemp,
0, 0, m_pShadowImage->GetWidth(), m_pShadowImage->GetHeight(),
m_nShadowWLT, m_nShadowHLT, m_nShadowWRB+1, m_nShadowHRB+1);
}else
{
// 画算法阴影
ZeroMemory(pvBits, bmi.bmiHeader.biSizeImage);
MakeShadow((UINT32 *)pvBits, hParent, &WndRect);
}
// 计算阴影窗口偏移位置
POINT ptDst;
if(m_pShadowImage != NULL)
{
ptDst.x = WndRect.left - m_nShadowWLT;
ptDst.y = WndRect.top - m_nShadowHLT;
}
else
{
ptDst.x = WndRect.left + m_nxOffset - m_nSize;
ptDst.y = WndRect.top + m_nyOffset - m_nSize;
}
POINT ptSrc = {0, 0};
SIZE WndSize = {nShadWndWid, nShadWndHei};
BLENDFUNCTION blendPixelFunction= { AC_SRC_OVER, 0, 255, AC_SRC_ALPHA };
MoveWindow(m_hWnd, ptDst.x, ptDst.y, nShadWndWid, nShadWndHei, FALSE);
BOOL bRet= s_UpdateLayeredWindow(m_hWnd, NULL, &ptDst, &WndSize, hMemDC,
&ptSrc, 0, &blendPixelFunction, ULW_ALPHA);
_ASSERT(bRet); // something was wrong....
// Delete used resources
SelectObject(hMemDC, hOriBmp);
DeleteObject(hbitmap);
DeleteDC(hMemDC);
}
