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Hi Guys,
I have tried to do a seach but I may be asking the wrong thing. Basically I am trying to find information on how do you make an application window look not like a standard window.
Applications I can think of off the top of my head that are like this is Windows Media Player, QuickTime Player.
Thanks for any info you can provide!
SetWindowRgn() is how you can accomplish this. Basically you create a bitmap that serves as the dialog window. I actually came across this great function on the web a long time back that simplifies the whole thing for you... I'll post it...
Here's the function:
Then call this somewhere in your initialization:Code:HRGN DIBToRgn(HBITMAP hBmp, COLORREF BkColor, BOOL Direct)
{
// use to return the handle of the HGRN
HRGN hRgn = NULL;
#define MAX_ALLOC_RECTS 100
//the difference of the color
COLORREF Tolerance=0x00101010;
if (hBmp)
{
//creat the dib to save the dc
HDC hMemDC = CreateCompatibleDC(NULL);
if (hMemDC)
{
BITMAP bm;
//get the info of the bitmap
GetObject(hBmp, sizeof(bm), &bm);
BITMAPINFOHEADER BmpInfoh = { //the struct of the bitmap
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;
};
//design a void point to point to the bitmap
LPVOID pBit32;
//creat a DIB
HBITMAP hDib32 = CreateDIBSection(hMemDC,
(BITMAPINFO *)&BmpInfoh,
DIB_RGB_COLORS, &pBit32, NULL, 0);
if (hDib32)
{
//copy dib to DC
HBITMAP hOldib32 = (HBITMAP)SelectObject(hMemDC, hDib32);
// create a DC to save orgin bitmap
HDC hDC = CreateCompatibleDC(hMemDC);
if (hDC)
{
BITMAP bm32;
// get the new 34 bit Dib size
GetObject(hDib32, sizeof(bm32), &bm32);
//make sure the 32Dib's every line pilex's is 4 's times
while (bm32.bmWidthBytes % 4)
bm32.bmWidthBytes++;
//copy the orginal dib to DC
HBITMAP holdBmp = (HBITMAP)SelectObject(hDC, hBmp);
//copy dib to memory DC
BitBlt(hMemDC, 0, 0, bm.bmWidth, bm.bmHeight, hDC, 0, 0, SRCCOPY);
DWORD MaxRects = MAX_ALLOC_RECTS;
SYSTEM_INFO Sysinfo;
//get memory size
GetSystemInfo(&Sysinfo);
//make a stack which can chang big
//alloct memory
HANDLE hRcData=HeapCreate(HEAP_GENERATE_EXCEPTIONS,Sysinfo.dwPageSize, 0);
RGNDATA * pRcData=(RGNDATA*)HeapAlloc(hRcData,HEAP_ZERO_MEMORY,
sizeof(RGNDATAHEADER)+sizeof(RECT)*MaxRects);
//fill the the RGNDATA struck
pRcData->rdh.dwSize = sizeof(RGNDATAHEADER);
pRcData->rdh.iType = RDH_RECTANGLES;
pRcData->rdh.nCount = pRcData->rdh.nRgnSize = 0;
SetRect(&pRcData->rdh.rcBound, MAXLONG, MAXLONG, 0, 0);
BYTE hr,hg,hb,lr,lg,lb;
switch(BkColor)
{
case RGB(255,255,255): //if the bkcolor is white
hr = GetRValue(BkColor);
hg = GetGValue(BkColor);
hb = GetBValue(BkColor);
lr = min(0xff, hr - GetRValue(Tolerance));
lg = min(0xff, hg - GetGValue(Tolerance));
lb = min(0xff, hb - GetBValue(Tolerance));
break;
case RGB(0,0,0): //if the bkcolor is black
lr = GetRValue(BkColor);
lg = GetGValue(BkColor);
lb = GetBValue(BkColor);
hr = min(0xff, lr + GetRValue(Tolerance));
hg = min(0xff, lg + GetGValue(Tolerance));
hb = min(0xff, lb + GetBValue(Tolerance));
break;
default: //if the bkcolor is other color
Tolerance=0x111111;
lr =max(0, GetRValue(BkColor)-GetRValue(Tolerance));
lg = max(0,GetGValue(BkColor)-GetGValue(Tolerance));
lb = max(0,GetBValue(BkColor)-GetBValue(Tolerance));
hr=min(0xff,GetRValue(BkColor)+GetRValue(Tolerance));
hg=min(0xff,GetGValue(BkColor)+GetGValue(Tolerance));
hb=min(0xff,GetBValue(BkColor)+GetBValue(Tolerance));
break;
}
// Get the bit point and do the search
BYTE *pBits = (BYTE *)bm32.bmBits + (bm32.bmHeight - 1) * bm32.bmWidthBytes;
for (int y = 0; y < bm.bmHeight; y++)
{
for (int x = 0; x < bm.bmWidth; x++)
{
int x0 = x;
DWORD *pColor = (DWORD *)pBits + x;
BYTE dr,dg,db;
while (x < bm.bmWidth)
{
dr=GetRValue(*pColor);
dg=GetGValue(*pColor);
db=GetBValue(*pColor);
if ((dr>= lr && dr<= hr)&&(dg>=lg&&dg<=hg)&&(db>=lb&&db<=hb))
{
if(Direct)
break;
else
{
pColor++;
x++;
}
}
else if(Direct)
{
pColor++;
x++;
}
else
break;
}
if (x > x0)
{
if (pRcData->rdh.nCount >= MaxRects)
{
MaxRects += MAX_ALLOC_RECTS;
//re alloc the stack
pRcData=(RGNDATA*)HeapReAlloc(
hRcData,HEAP_ZERO_MEMORY,pRcData,
sizeof(RGNDATAHEADER)+sizeof(RECT)*MaxRects);
}
RECT *pr = (RECT *)&pRcData->Buffer;
SetRect(&pr[pRcData->rdh.nCount], x0, y, x, y+1);
pRcData->rdh.rcBound.left = x0;
pRcData->rdh.rcBound.top = y;
pRcData->rdh.rcBound.right = x;
pRcData->rdh.rcBound.bottom = y+1;
pRcData->rdh.nCount++;
if (pRcData->rdh.nCount == 3000)
{
HRGN tmphRgn = ExtCreateRegion(NULL,
sizeof(RGNDATAHEADER) + (sizeof(RECT) * MaxRects),
pRcData);
if (hRgn)
{
CombineRgn(hRgn, hRgn, tmphRgn, RGN_OR);
DeleteObject(tmphRgn);
}
else
hRgn = tmphRgn;
pRcData->rdh.nCount = 0;
SetRect(&pRcData->rdh.rcBound,
MAXLONG, MAXLONG, 0, 0);
}
}
}
// search next line
pBits -= bm32.bmWidthBytes;
}
HRGN tmphRgn = ExtCreateRegion(NULL,
sizeof(RGNDATAHEADER) + (sizeof(RECT) * MaxRects), pRcData);
if (hRgn)
{
CombineRgn(hRgn, hRgn, tmphRgn, RGN_OR);
DeleteObject(tmphRgn);
}
else
hRgn = tmphRgn;
// make a rect ,use this rect xor to the BkColor
//then we can get the rect we want
if(!Direct)
{
HRGN hRect=CreateRectRgn(0,0,bm.bmWidth,bm.bmHeight);
if(hRect)
{
CombineRgn(hRgn,hRgn,hRect,RGN_XOR);
DeleteObject(hRect);
}
else
return NULL;
}
//release the memory
HeapFree(hRcData,HEAP_NO_SERIALIZE,pRcData);
SelectObject(hDC, holdBmp);
DeleteDC(hDC);
DeleteObject(holdBmp);
}
SelectObject(hMemDC,hOldib32);
DeleteDC(hMemDC);
DeleteObject(hOldib32);
DeleteObject(hDib32);
}
else
DeleteDC(hMemDC);
}
}
return hRgn;
}
Also look into overriding OnEraseBkgnd() and OnNcHitTest():Code:m_hBmp = (HBITMAP)LoadImage(AfxGetApp()->m_hInstance, MAKEINTRESOURCE(IDB_MAIN), IMAGE_BITMAP, 0, 0,L R_CREATEDIBSECTION);
m_hClientRgn = CreateEllipticRgn(33, 34, 34, 35);
m_hWndRgn = DIBToRgn(m_hBmp, 0xff00ff, FALSE);
if(m_hWndRgn)
SetWindowRgn(m_hWndRgn,TRUE);
Hope this helps.Code:BOOL CSkinTestDlg::OnEraseBkgnd(CDC* pDC)
{
if(m_hBmp)
{
BITMAP bm;
GetObject(m_hBmp,sizeof(bm),&bm);
HDC hMemdc=CreateCompatibleDC(pDC->m_hDC);
if(hMemdc)
{
HBITMAP hOldBmp=(HBITMAP)SelectObject(hMemdc,m_hBmp);
if(hOldBmp)
{
BitBlt(pDC->m_hDC,0,0,bm.bmWidth,bm.bmHeight,hMemdc,0,0,SRCCOPY);
SelectObject(hMemdc,hOldBmp);
DeleteDC(hMemdc);
DeleteObject(hOldBmp);
return TRUE;
}
else
DeleteDC(hMemdc);
}
}
return CDialog::OnEraseBkgnd(pDC);
}
UINT CSkinTestDlg::OnNcHitTest(CPoint point)
{
return HTCAPTION;//always say our mouse is on the caption (title bar) area
}
Additionally, it may interest you to search for the CButtonST class (try google). It's a CButton derived class that displays flat buttons with a bitmap that can change when your mouse is over it. Neat stuff.
WOW!
Thanks a ton I didn't expect this much info! :)
You're welcome. ;)
Does this help?
Does this help?
This is how I've always done it:
******************************
HRGN hrgn;
//Create a region of the shape you want to use
hrgn = CreateEllipticRgn(Variables for region size and curve);
SetWindowRgn(hwnd, hrgn, 1);
******************************
Now your window will be the shape and size of the region you defined!! That easy!!
Of course there's a lot more to explore here. But that should be an experience best left to your very capable self!!
I think I found this solution (if memory serves) on Flipcode.com
I hope it helps you!!
Cheers!