CRgnbutton.cpp文件/ RgnButton.cpp : implementation file
//#include "stdafx.h"
#include "RgnButton.h"#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif/////////////////////////////////////////////////////////////////////////////
// CRgnButtonCRgnButton::CRgnButton()
{
ToleranceColor=0x101010;
TransparentColor=0x0;
}
/*
CRgnButton::CRgnButton(UINT nBmpID, COLORREF cTransparentColor , COLORREF cTolerance)
{
ToleranceColor=cTolerance;
TransparentColor=cTransparentColor;
if(LoadPicture(nBmpID))
AttachRgn(BitmapToRgn(TransparentColor,ToleranceColor));
}
*/
CRgnButton::~CRgnButton()
{
}
BEGIN_MESSAGE_MAP(CRgnButton, CButton)
//{{AFX_MSG_MAP(CRgnButton)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////
// CRgnButton message handlers
//#include "stdafx.h"
#include "RgnButton.h"#ifdef _DEBUG
#define new DEBUG_NEW
#undef THIS_FILE
static char THIS_FILE[] = __FILE__;
#endif/////////////////////////////////////////////////////////////////////////////
// CRgnButtonCRgnButton::CRgnButton()
{
ToleranceColor=0x101010;
TransparentColor=0x0;
}
/*
CRgnButton::CRgnButton(UINT nBmpID, COLORREF cTransparentColor , COLORREF cTolerance)
{
ToleranceColor=cTolerance;
TransparentColor=cTransparentColor;
if(LoadPicture(nBmpID))
AttachRgn(BitmapToRgn(TransparentColor,ToleranceColor));
}
*/
CRgnButton::~CRgnButton()
{
}
BEGIN_MESSAGE_MAP(CRgnButton, CButton)
//{{AFX_MSG_MAP(CRgnButton)
//}}AFX_MSG_MAP
END_MESSAGE_MAP()/////////////////////////////////////////////////////////////////////////////
// CRgnButton message handlers
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HRGN CRgnButton::BitmapToRgn(UINT nID,COLORREF cTransparentColor,COLORREF cTolerance)
{
HRGN hRgn = NULL;
//if(hbmp)
m_RgnBitmap=new CBitmap;
if (m_RgnBitmap->m_hObject)//get bitmap.handle
{
// Create a memory DC inside which we will scan the bitmap content
HDC hMemDC = CreateCompatibleDC(NULL);
if (hMemDC)
{
// Get bitmap size
BITMAP bm;
// GetObject(hBmp, sizeof(bm), &bm);
m_RgnBitmap->GetObject(sizeof(BITMAP),&bm);
// Create a 32 bits depth bitmap and select it into the memory DC
BITMAPINFOHEADER RGB32BITSBITMAPINFO = {
sizeof(BITMAPINFOHEADER), // biSize
bm.bmWidth, // biWidth;
bm.bmHeight, // biHeight;
1, // biPlanes;
32, // biBitCount
BI_RGB, // biCompression;
0, // biSizeImage;
0, // biXPelsPerMeter;
0, // biYPelsPerMeter;
0, // biClrUsed;
0 // biClrImportant;
};
VOID * pbits32;
HBITMAP hbm32 = CreateDIBSection(hMemDC, (BITMAPINFO *)&RGB32BITSBITMAPINFO, DIB_RGB_COLORS, &pbits32, NULL, 0);
if (hbm32)
{
HBITMAP holdBmp = (HBITMAP)SelectObject(hMemDC, hbm32); // Create a DC just to copy the bitmap into the memory DC
HDC hDC = CreateCompatibleDC(hMemDC);
if (hDC)
{
// Get how many bytes per row we have for the bitmap bits (rounded up to 32 bits)
BITMAP bm32;
GetObject(hbm32, sizeof(bm32), &bm32);
while (bm32.bmWidthBytes % 4)
bm32.bmWidthBytes++; // Copy the bitmap into the memory DC
HBITMAP holdBmp = (HBITMAP)SelectObject(hDC, (HBITMAP)m_RgnBitmap->m_hObject);
BitBlt(hMemDC, 0, 0, bm.bmWidth, bm.bmHeight, hDC, 0, 0, SRCCOPY); // For better performances, we will use the ExtCreateRegion() function to create the
// region. This function take a RGNDATA structure on entry. We will add rectangles by
// amount of ALLOC_UNIT number in this structure.
#define ALLOC_UNIT 100
DWORD maxRects = ALLOC_UNIT;
HANDLE hData = GlobalAlloc(GMEM_MOVEABLE, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects));
RGNDATA *pData = (RGNDATA *)GlobalLock(hData);
pData->rdh.dwSize = sizeof(RGNDATAHEADER);
pData->rdh.iType = RDH_RECTANGLES;
pData->rdh.nCount = pData->rdh.nRgnSize = 0;
SetRect(&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0); // Keep on hand highest and lowest values for the "transparent" pixels
BYTE lr = GetRValue(cTransparentColor);
BYTE lg = GetGValue(cTransparentColor);
BYTE lb = GetBValue(cTransparentColor);
BYTE hr = min(0xff, lr + GetRValue(cTolerance));
BYTE hg = min(0xff, lg + GetGValue(cTolerance));
BYTE hb = min(0xff, lb + GetBValue(cTolerance));
//BYTE mr=lr-GetRValue(cTolerance);
//BYTE mg=lg-GetGValue(cTolerance);
//BYTE mb=lb-GetBValue(cTolerance); // Scan each bitmap row from bottom to top (the bitmap is inverted vertically)
BYTE *p32 = (BYTE *)bm32.bmBits + (bm32.bmHeight - 1) * bm32.bmWidthBytes;
for (int y = 0; y < bm.bmHeight; y++)
{
// Scan each bitmap pixel from left to right
for (int x = 0; x < bm.bmWidth; x++)
{
// Search for a continuous range of "non transparent pixels"
int x0 = x;
LONG *p = (LONG *)p32 + x;
while (x < bm.bmWidth)
{
BYTE b = GetRValue(*p);
if (b >= lr && b <= hr)
{
b = GetGValue(*p);
if (b >= lg && b <= hg)
{
b = GetBValue(*p);
if (b >= lb && b <= hb)
// This pixel is "transparent"
break;
}
}
p++;
x++;
} if (x > x0)
{
// Add the pixels (x0, y) to (x, y+1) as a new rectangle in the region
if (pData->rdh.nCount >= maxRects)
{
GlobalUnlock(hData);
maxRects += ALLOC_UNIT;
hData = GlobalReAlloc(hData, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects), GMEM_MOVEABLE);
pData = (RGNDATA *)GlobalLock(hData);
}
RECT *pr = (RECT *)&pData->Buffer;
SetRect(&pr[pData->rdh.nCount], x0, y, x, y+1);
if (x0 < pData->rdh.rcBound.left)
pData->rdh.rcBound.left = x0;
if (y < pData->rdh.rcBound.top)
pData->rdh.rcBound.top = y;
if (x > pData->rdh.rcBound.right)
pData->rdh.rcBound.right = x;
if (y+1 > pData->rdh.rcBound.bottom)
pData->rdh.rcBound.bottom = y+1;
pData->rdh.nCount++; // On Windows98, ExtCreateRegion() may fail if the number of rectangles is too
// large (ie: > 4000). Therefore, we have to create the region by multiple steps.
if (pData->rdh.nCount == 2000)
{
HRGN h = ExtCreateRegion(NULL, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects), pData);
if (hRgn)
{
CombineRgn(hRgn, hRgn, h, RGN_OR);
DeleteObject(h);
}
else
hRgn = h;
pData->rdh.nCount = 0;
SetRect(&pData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
}
}
} // Go to next row (remember, the bitmap is inverted vertically)
p32 -= bm32.bmWidthBytes;
} // Create or extend the region with the remaining rectangles
HRGN h = ExtCreateRegion(NULL, sizeof(RGNDATAHEADER) + (sizeof(RECT) * maxRects), pData);
if (hRgn)
{
CombineRgn(hRgn, hRgn, h, RGN_OR);
DeleteObject(h);
}
else
hRgn = h; // Clean up
SelectObject(hDC, holdBmp);
DeleteDC(hDC);
} DeleteObject(SelectObject(hMemDC, holdBmp));
} DeleteDC(hMemDC);
}
}
m_RgnBitmap->DeleteObject();
return hRgn;
}COLORREF CRgnButton::SetToleColor(COLORREF cToleranceColor)
{
this->ToleranceColor=cToleranceColor;
return cToleranceColor;
}COLORREF CRgnButton::SetTranColor(COLORREF cTransparentColor)
{
this->TransparentColor=cTransparentColor;
return cTransparentColor;
}
/*
BOOL CRgnButton::LoadPicture(UINT nID)
{
if(m_RgnBitmap->LoadBitmap(nID))
return TRUE;
else
return FALSE;
}void CRgnButton::AttachRgn(HRGN hrgn)
{
m_hRgn=hrgn;
}
*/
void CRgnButton::DrawItem(LPDRAWITEMSTRUCT lpDrawItemStruct,UINT nID)
{
// TODO: Add your code to draw the specified item
RECT Rect;
Rect=lpDrawItemStruct->rcItem; CDC *pDC=CDC::FromHandle(lpDrawItemStruct->hDC);
BITMAP bm;
m_RgnBitmap->GetObject(sizeof(BITMAP),&bm);
CDC memDC;
memDC.CreateCompatibleDC(pDC);
HRGN rgn;
rgn=BitmapToRgn(nID,TransparentColor,ToleranceColor);
if(rgn)
AfxMessageBox("No Rigon Found",1,NULL);
else
SetWindowRgn(rgn,TRUE); pDC->BitBlt(0,0,bm.bmWidth,bm.bmHeight,&memDC,0,0,SRCCOPY);
memDC.DeleteDC();}
/***************
BOOL CRgnButton::Create(LPCTSTR lpszCaption,DWORD dwStyle,const RECT &rect,CWnd *pParentWnd,UINT nID,UINT nBmpID)
{
LoadPicture(nBmpID);
AttachRgn(BitmapToRgn(TransparentColor,ToleranceColor));
return CButton::Create(lpszCaption,dwStyle,rect,pParentWnd,nID);}
**************************/void CRgnButton::PreSubclassWindow()
{
// TODO: Add your specialized code here and/or call the base class
CButton::PreSubclassWindow();
ModifyStyle(0,BS_OWNERDRAW);
//SetWindowRgn(m_hRgn,TRUE);}
析构函数又没有
是不是象
CBitmap *m_RgnBitmap;
这样的成员引起问题呢?
还有我保证那个BitmapToRgn函数是正确的,应为我在对话框里已经实现了
这个功能是不是要在析构函数中用 delete m_RgnBitmap;
????
我是在对话框里静态画了个Cbutton 然后把它设为 CRgnButton的对象
并且我在对话框的WM_DRAWITEM里调用了CRgnButton的drawitem函数没反应然后我在对话框里动态创建了一个CRgnButton,在对话框的初始化函数里
调用create函数
然后rgnbutton.showwindow(SW_SHOW);可是依然没反应:(哪位大哥能不能把这代码拷下去,自己创建个对话框程序,调试一下???如果分不够,再加!!!
绝对给分
pDC->BitBlt(0,0,bm.bmWidth,bm.bmHeight,&memDC,0,0,SRCCOPY);语句前后加入如下
::SelectClipRgn(pDC -> GetSafeHdc(), hRgn);
pDC->BitBlt(0,0,bm.bmWidth,bm.bmHeight,&memDC,0,0,SRCCOPY);
::SelectClipRgn(pDC -> GetSafeHdc(), NULL);
应该就可以了,你做的东西,前段时间我就做好了,但我的只是16色的,你做的好想是32位色,比我的好,我要学习一下.
pDC->BitBlt(0,0,bm.bmWidth,bm.bmHeight,&memDC,0,0,SRCCOPY);语句前后加入如下
::SelectClipRgn(pDC -> GetSafeHdc(), hRgn);
pDC->BitBlt(0,0,bm.bmWidth,bm.bmHeight,&memDC,0,0,SRCCOPY);
::SelectClipRgn(pDC -> GetSafeHdc(), NULL);
应该就可以了,你做的东西,前段时间我就做好了,但我的只是16色的,你做的好想是32位色,比我的好,我要学习一下.