关于镂空图片的制作问题

[riusksk]

我想用C语言来制作出镂空图片，图片如下，我想去掉图中的粉红色。
http://hiphotos.baidu.com/combojiang/pic/item/eeb88d2cc004c2fb8b13993b.jpg
代码虽然编译通过，但图片依然未镂空，不知道错在何处了，望大牛指点一下。
资源中的rgn文件是用老外写的一个工具生成的：http://www.codeproject.com/KB/GDI/rgncreator.aspx，我把它放在资源中来加载。
工程文件已随附牛上传，源代码如下：
#include "windows.h"

/************************************************************/
#define ButtonID 1000
#define RANGE 103
#define IDB_BITMAP1 102
#define PictureW 300
#define PictureH 300

HWND g_hwndButton;
HWND g_hWnd;
HRSRC g_RsrcHand;
HGLOBAL g_RsrcPoint;
DWORD g_RsrcSize;


HINSTANCE g_hInstance;
char ClassName[]="cws_class";
char DisplayName[] = "custom windows shape";
char RsrcType[] = "RGN";
char ButtonClassName[] = "button";
char ButtonText[] = "Click Me!";
char Text[] = "good bye...";

LRESULT CALLBACK WindowProc( HWND hwnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam
)

{
PAINTSTRUCT ps;
HDC hdc;
switch(uMsg)
{
case WM_CREATE:
g_RsrcHand = FindResource(g_hInstance,RANGE,RsrcType);
g_RsrcPoint = LoadResource(g_hInstance,g_RsrcHand);
g_RsrcSize = SizeofResource(g_hInstance,g_RsrcHand);
g_RsrcPoint = LockResource(g_RsrcPoint);

SetWindowRgn(hwnd,ExtCreateRegion(NULL,g_RsrcSize,(const struct _RGNDATA *)g_RsrcPoint),TRUE);
g_hwndButton = CreateWindowEx(NULL,ButtonClassName,ButtonText,
WS_CHILD|WS_VISIBLE|BS_DEFPUSHBUTTON,
150,185,100,25,hwnd,(HMENU)ButtonID,g_hInstance,NULL);

break;
case WM_COMMAND:
if(LOWORD(wParam) == ButtonID)
{
MessageBox(hwnd,Text,DisplayName,MB_OK);
SendMessage(hwnd,WM_DESTROY,NULL,NULL);
}
break;
case WM_LBUTTONDOWN:
SendMessage(hwnd,WM_NCLBUTTONDOWN,HTCAPTION,lParam);
break;
case WM_DESTROY:
PostQuitMessage(NULL);
break;
default:
return DefWindowProc(hwnd,uMsg,wParam,lParam);
}
return 0;
}

int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
WNDCLASSEX wc;
MSG msg;
g_hInstance = hInstance;
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = CS_HREDRAW | CS_VREDRAW |CS_BYTEALIGNWINDOW;
wc.lpfnWndProc = WindowProc;
wc.cbClsExtra = NULL;
wc.cbWndExtra = NULL;
wc.hInstance = hInstance;
wc.hbrBackground = CreatePatternBrush(LoadBitmap(hInstance,IDB_BITMAP1));
wc.lpszMenuName = NULL;
wc.lpszClassName = ClassName;

wc.hIcon = NULL;
wc.hCursor = LoadCursor(NULL,IDC_CROSS);
wc.hIconSm = NULL;
RegisterClassEx(&wc);

g_hWnd = CreateWindowEx(WS_EX_LEFT,
ClassName,
DisplayName,
WS_POPUP,
(GetSystemMetrics(SM_CXSCREEN) - PictureW)/2,
(GetSystemMetrics(SM_CYSCREEN) - PictureH)/2,
PictureW,
PictureH,
NULL,
NULL,
hInstance,
NULL
);

ShowWindow(g_hWnd,SW_SHOWNORMAL);
UpdateWindow(g_hWnd);

while(GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}

[riusksk]

不知道如何上传附件啊

[riusksk]

附件下载地址：http://d.download.csdn.net/down/2033735/riusksk

[xsc2001]

给你两个函数吧，我都是用这两个函数，还不错。

void SetupRegion(CDC *pDC, CBitmap &cBitmap, COLORREF TransColor)
{
	CDC memDC;
	//创建与传入DC兼容的临时DC
	memDC.CreateCompatibleDC(pDC);

	CBitmap *pOldMemBmp=NULL;
	//将位图选入临时DC
	pOldMemBmp=memDC.SelectObject(&cBitmap);

	CRgn wndRgn;
	//创建总的窗体区域，初始region为0
	wndRgn.CreateRectRgn(0,0,0,0);


	BITMAP bit;   
	cBitmap.GetBitmap (&bit);//取得位图参数，这里要用到位图的长和宽     

	int y;
	for(y=0;y<=bit.bmHeight  ;y++)
	{
		CRgn rgnTemp; //保存临时region

		int iX = 0;
		do
		{
			//跳过透明色找到下一个非透明色的点.
			while (iX <= bit.bmWidth  && memDC.GetPixel(iX, y) == TransColor)
				iX++;

			//记住这个起始点
			int iLeftX = iX;

			//寻找下个透明色的点
			while (iX <= bit.bmWidth  && memDC.GetPixel(iX, y) != TransColor)
				++iX;

			//创建一个包含起点与重点间高为1像素的临时“region”
			rgnTemp.CreateRectRgn(iLeftX, y, iX, y+1);

			//合并到主"region".
			wndRgn.CombineRgn(&wndRgn, &rgnTemp, RGN_OR);

			//删除临时"region",否则下次创建时和出错
			rgnTemp.DeleteObject();
		}while(iX <bit.bmWidth );
		iX = 0;
	}

	if(pOldMemBmp)
		memDC.SelectObject(pOldMemBmp);

	CWnd * pWnd = pDC->GetWindow();
	pWnd->SetWindowRgn(wndRgn,TRUE);    
	pWnd->SetForegroundWindow();    

}

void SetupCoverRegion(CDC *pDC, CBitmap &cBitmap, COLORREF TransColor)
{
	CDC memDC;
	//创建与传入DC兼容的临时DC
	memDC.CreateCompatibleDC(pDC);

	CBitmap *pOldMemBmp=NULL;
	//将位图选入临时DC
	pOldMemBmp=memDC.SelectObject(&cBitmap);

	CRgn wndRgn;
	//创建总的窗体区域，初始region为0
	wndRgn.CreateRectRgn(0,0,0,0);


	BITMAP bit;   
	cBitmap.GetBitmap (&bit);//取得位图参数，这里要用到位图的长和宽     

	int y;
	for(y=0;y<=bit.bmHeight  ;y++)
	{
		CRgn rgnTemp; //保存临时region

		int iX = 0;
		do
		{
			//跳过透明色找到下一个非透明色的点.
			while (iX <= bit.bmWidth  && memDC.GetPixel(iX, y) == TransColor)
				iX++;

			//记住这个起始点
			int iLeftX = iX;

			//寻找下个透明色的点
			if(iX > 10 && iX < bit.bmWidth - 60 && y <= bit.bmHeight - 15)
				iX = bit.bmWidth - 60;
			while (iX <= bit.bmWidth  && memDC.GetPixel(iX, y) != TransColor)
				++iX;

			//创建一个包含起点与重点间高为1像素的临时“region”
			rgnTemp.CreateRectRgn(iLeftX, y, iX, y+1);

			//合并到主"region".
			wndRgn.CombineRgn(&wndRgn, &rgnTemp, RGN_OR);

			//删除临时"region",否则下次创建时和出错
			rgnTemp.DeleteObject();
		}while(iX <bit.bmWidth );
		iX = 0;
	}

	if(pOldMemBmp)
		memDC.SelectObject(pOldMemBmp);

	CWnd * pWnd = pDC->GetWindow();
	
	int iSize = wndRgn.GetRegionData(NULL, sizeof(RGNDATA));
	RGNDATA* pData = (RGNDATA*)calloc(iSize, 1);
	pData->rdh.dwSize = iSize;
	int iSize2 = wndRgn.GetRegionData(pData, iSize);

	
	FILE *f;
	f = fopen("e:\\abc.rgn", "wb");
	fwrite(pData, sizeof(BYTE), iSize, f);
	fclose(f);
	free(pData);

	pWnd->SetWindowRgn(wndRgn,TRUE);
	pWnd->SetForegroundWindow();
}

[riusksk]

谢谢xsc2001兄弟，可否直接给个实例代码

[riusksk]

[Quote=引用 3 楼 xsc2001 的回复:]
给你两个函数吧，我都是用这两个函数，还不错……

[/Quote]
函数编译未通过，我创建的是C源文件，而非cpp文件，把上面的CDC、CBitmap那些类改为HDC、HBITMAP也不行，不知道哪位能给个完整的C代码，谢谢

[sjdev]

是纯粹的把粉红色去掉，还是做个去掉粉红色后剩余部分的形状？

[riusksk]

去掉粉红色后剩余部分的形状