i did a region class:
now heres my control paint message:Code:class region { private: BYTE* Get24BitPixels(HBITMAP pBitmap, WORD *pwWidth, WORD *pwHeight) { // a bitmap object just to get bitmap width and height BITMAP bmpBmp; // pointer to original bitmap info LPBITMAPINFO pbmiInfo; // bitmap info will hold the new 24bit bitmap info BITMAPINFO bmiInfo; // width and height of the bitmap WORD wBmpWidth, wBmpHeight; // --------------------------------------------------------- // get some info from the bitmap // --------------------------------------------------------- GetObject(pBitmap, sizeof(bmpBmp),&bmpBmp); pbmiInfo = (LPBITMAPINFO)&bmpBmp; // get width and height wBmpWidth = (WORD)pbmiInfo->bmiHeader.biWidth; wBmpWidth -= (wBmpWidth%4); // width is 4 byte boundary aligned. wBmpHeight = (WORD)pbmiInfo->bmiHeader.biHeight; // copy to caller width and height parms *pwWidth = wBmpWidth; *pwHeight = wBmpHeight; // --------------------------------------------------------- // allocate width * height * 24bits pixels //BYTE *pPixels = new BYTE[wBmpWidth*wBmpHeight*3]; BYTE *pPixels = new (std::nothrow) BYTE[wBmpWidth*wBmpHeight*3]; if (pPixels==0) return NULL; // get user desktop device context to get pixels from HDC hDC = GetWindowDC(NULL); // fill desired structure bmiInfo.bmiHeader.biSize = sizeof(BITMAPINFOHEADER); bmiInfo.bmiHeader.biWidth = wBmpWidth; bmiInfo.bmiHeader.biHeight = -wBmpHeight; bmiInfo.bmiHeader.biPlanes = 1; bmiInfo.bmiHeader.biBitCount = 24; bmiInfo.bmiHeader.biCompression = BI_RGB; bmiInfo.bmiHeader.biSizeImage = wBmpWidth*wBmpHeight*3; bmiInfo.bmiHeader.biXPelsPerMeter = 0; bmiInfo.bmiHeader.biYPelsPerMeter = 0; bmiInfo.bmiHeader.biClrUsed = 0; bmiInfo.bmiHeader.biClrImportant = 0; // get pixels from the original bitmap converted to 24bits int iRes = GetDIBits(hDC,pBitmap,0,wBmpHeight,(LPVOID)pPixels,&bmiInfo,DIB_RGB_COLORS); // release the device context ReleaseDC(NULL,hDC); // if failed, cancel the operation. if (!iRes) { delete[] pPixels; return NULL; }; // return the pixel array return pPixels; } HRGN RegionbyBitmap(HBITMAP pBitmap,COLORREF clrTransparent=-1 ) { // bitmap width and height WORD wBmpWidth,wBmpHeight; // the final region and a temporary region HRGN hRgn, hTmpRgn; // 24bit pixels from the bitmap BYTE *pPixels = Get24BitPixels(pBitmap, &wBmpWidth, &wBmpHeight); if (!pPixels) return NULL; // create our working region hRgn = CreateRectRgn(0,0,wBmpWidth,wBmpHeight); if (!hRgn) { delete[] pPixels; return NULL; } // --------------------------------------------------------- // scan the bitmap // --------------------------------------------------------- if(clrTransparent==-1) clrTransparent=RGB(pPixels[0 + 2],pPixels[0 + 1],pPixels[0 + 0]); BYTE jTranspR = GetRValue(clrTransparent), jTranspG=GetGValue(clrTransparent), jTranspB=GetBValue(clrTransparent); DWORD p = 0; int xStart = 0; bool bTransp(false); hTmpRgn = CreateRectRgn(0, 0, 1, 1); for (WORD y = 0; y<wBmpHeight; y++) { for (WORD x = 0; x<wBmpWidth; x++) { BYTE jRed = pPixels[p + 2]; BYTE jGreen = pPixels[p + 1]; BYTE jBlue = pPixels[p + 0]; if(x==0 && y==0) { if ((jRed == jTranspR && jGreen == jTranspG && jBlue == jTranspB)) DebugText("pixel zero transparent"); } if ((jRed == jTranspR && jGreen == jTranspG && jBlue == jTranspB)) { if (!bTransp) { xStart = x; bTransp = true; } } else { if (bTransp) { SetRectRgn(hTmpRgn, xStart, y, x, y + 1); CombineRgn(hRgn, hRgn, hTmpRgn, RGN_XOR); bTransp = false; } } // next pixel p += 3; } if (bTransp) { SetRectRgn(hTmpRgn, xStart, y, wBmpWidth, y + 1); if(CombineRgn(hRgn, hRgn, hTmpRgn, RGN_XOR)==ERROR) DebugText("error"); bTransp = false; } } DeleteObject(hTmpRgn); delete [] pPixels; return hRgn; } HRGN hregion=NULL; public: region(HBITMAP hbitmapregion,COLORREF clrbackcolor=-1) { hregion=RegionbyBitmap(hbitmapregion,clrbackcolor); } ~region() { DeleteObject(hregion); } void frombitmap(HBITMAP hbitmapregion,COLORREF clrbackcolor) { hregion=RegionbyBitmap(hbitmapregion, clrbackcolor); } void fromrgn(HRGN fromregion) { hregion=fromregion; } operator HRGN() { return hregion; } };
- inst it's the label class instance pointer;Code:case WM_CTLCOLOR: case WM_CTLCOLORBTN: case WM_CTLCOLORDLG: case WM_ERASEBKGND: { return TRUE; } break; case WM_PAINT: { PAINTSTRUCT ps; BeginPaint(inst->hwnd, &ps); image imgLabel(inst->intWidth+1,inst->intHeight+1); SetTextColor(ps.hdc,inst->clrTextColor); //back color pen penTransparent; imgLabel.Pen(penTransparent); /*if(inst->blnTransparent==true) { if(inst->clrTextColor!=RGB(0,0,0)) imgLabel.Brush(RGB(0,0,0)); else imgLabel.Brush(RGB(50,50,50)); } else { imgLabel.Brush(inst->clrBackColor); }*/ imgLabel.Brush(inst->clrBackColor); imgLabel.DrawRectangle(0,0,imgLabel.width()+2,imgLabel.height()+2); //draw image if(inst->imgtest!=NULL) DrawHICONtoHDC( imgLabel, inst->imgtest); imgLabel.Font(inst->chFont); imgLabel.DrawText(inst->strCaption.c_str()); //NULL the window region SetWindowRgn(inst->hwnd,NULL,TRUE); if(inst->blnTransparent==true) { DebugText("transparent"); region lblRegion(imgLabel); if(SetWindowRgn(inst->hwnd,lblRegion,TRUE)==0) DebugText("error on creating the shaped control"); //TransparentBlt(ps.hdc,0,0,imgLabel.width(), imgLabel.height(), imgLabel,0,0,imgLabel.width(), imgLabel.height(),GetPixel(ps.hdc,0,0)); BitBlt(ps.hdc,0,0,imgLabel.width(), imgLabel.height(), imgLabel,0,0,SRCCOPY); } else { BitBlt(ps.hdc,0,0,imgLabel.width(), imgLabel.height(), imgLabel,0,0,SRCCOPY); } EndPaint(inst->hwnd, &ps); return 0; } break;
- imgLabel is my image class.... the image is showed, so the problem isn't my class.
my problem is the region, because isn't added to control. why?
(before was working correctly... but i did some changes and now i don't understand what is wrong)
heres how i create the window:
and heres how i create the label:Code:hwnd = CreateWindowEx(0, classname, strCaption.c_str(), WS_OVERLAPPEDWINDOW | WS_VISIBLE | WS_CLIPCHILDREN, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, CW_USEDEFAULT, parent, NULL, mod, this);
did i miss some flags on window and\or label?Code:hwnd = CreateWindowEx( 0, TEXT("CLABEL"), strCaption.c_str(), WS_VISIBLE | WS_TABSTOP | WS_CHILD | BS_NOTIFY | BS_OWNERDRAW | WS_CLIPSIBLINGS , intLeft, intTop, intWidth, intHeight, parent, NULL, mod, (LPVOID)this);
i don't get any error on region functions. but the label isn't showed on shaped way
why?
