public HResult ExtractAndDrawThumbnail(IntPtr hdc, uint iconSize, out WTS_CACHEFLAGS flags, User32.RECT iconBounds, out bool retrieved, bool isHidden, bool isRefresh = false) { HResult res = HResult.S_OK; ISharedBitmap bmp = null; flags = WTS_CACHEFLAGS.WTS_DEFAULT; WTS_THUMBNAILID thumbId = new WTS_THUMBNAILID(); try { retrieved = false; res = ThumbnailCache.GetThumbnail(this._Item.ComInterface, iconSize, isRefresh ? (WTS_FLAGS.WTS_FORCEEXTRACTION | WTS_FLAGS.WTS_SCALETOREQUESTEDSIZE) : (WTS_FLAGS.WTS_INCACHEONLY | WTS_FLAGS.WTS_SCALETOREQUESTEDSIZE), out bmp, flags, thumbId); IntPtr hBitmap = IntPtr.Zero; if (bmp != null) { bmp.GetSharedBitmap(out hBitmap); retrieved = true; int width; int height; Gdi32.ConvertPixelByPixel(hBitmap, out width, out height); Gdi32.NativeDraw(hdc, hBitmap, iconBounds.Left + (iconBounds.Right - iconBounds.Left - width) / 2, iconBounds.Top + (iconBounds.Bottom - iconBounds.Top - height) / 2, width, height, isHidden); Gdi32.DeleteObject(hBitmap); } } finally { if (bmp != null) { Marshal.ReleaseComObject(bmp); } } return(res); }
public Boolean RefreshThumbnail(uint iconSize, out WTS_CACHEFLAGS flags) { ISharedBitmap bmp = null; WTS_CACHEFLAGS cacheFlags = WTS_CACHEFLAGS.WTS_DEFAULT; WTS_THUMBNAILID thumbId = new WTS_THUMBNAILID(); Boolean result = false; try { if (ThumbnailCache.GetThumbnail(this.shellItemNative, iconSize, WTS_FLAGS.WTS_FORCEEXTRACTION | WTS_FLAGS.WTS_SCALETOREQUESTEDSIZE, out bmp, cacheFlags, thumbId) != HResult.WTS_E_FAILEDEXTRACTION) { result = true; } } finally { if (bmp != null) { Marshal.ReleaseComObject(bmp); } } flags = cacheFlags; return(result); }
public HResult ExtractAndDrawThumbnail(IntPtr hdc, uint iconSize, out WTS_CACHEFLAGS flags, User32.RECT iconBounds, out bool retrieved, bool isHidden, bool isRefresh = false) { HResult res = HResult.S_OK; ISharedBitmap bmp = null; flags = WTS_CACHEFLAGS.WTS_DEFAULT; WTS_THUMBNAILID thumbId = new WTS_THUMBNAILID(); try { retrieved = false; res = ThumbnailCache.GetThumbnail(this._Item.ComInterface, iconSize, isRefresh ? (WTS_FLAGS.WTS_FORCEEXTRACTION | WTS_FLAGS.WTS_SCALETOREQUESTEDSIZE) : (WTS_FLAGS.WTS_INCACHEONLY | WTS_FLAGS.WTS_SCALETOREQUESTEDSIZE), out bmp, flags, thumbId); IntPtr hBitmap = IntPtr.Zero; if (bmp != null) { bmp.GetSharedBitmap(out hBitmap); retrieved = true; int width; int height; Gdi32.ConvertPixelByPixel(hBitmap, out width, out height); Gdi32.NativeDraw(hdc, hBitmap, iconBounds.Left + (iconBounds.Right - iconBounds.Left - width) / 2, iconBounds.Top + (iconBounds.Bottom - iconBounds.Top - height) / 2, width, height, isHidden); Gdi32.DeleteObject(hBitmap); } } finally { if (bmp != null) Marshal.ReleaseComObject(bmp); } return res; }
public Boolean RefreshThumbnail(uint iconSize, out WTS_CACHEFLAGS flags) { ISharedBitmap bmp = null; WTS_CACHEFLAGS cacheFlags = WTS_CACHEFLAGS.WTS_DEFAULT; WTS_THUMBNAILID thumbId = new WTS_THUMBNAILID(); Boolean result = false; try { if (ThumbnailCache.GetThumbnail(this.shellItemNative, iconSize, WTS_FLAGS.WTS_FORCEEXTRACTION | WTS_FLAGS.WTS_SCALETOREQUESTEDSIZE, out bmp, cacheFlags, thumbId) != HResult.WTS_E_FAILEDEXTRACTION) { result = true; } } finally { if (bmp != null) Marshal.ReleaseComObject(bmp); } flags = cacheFlags; return result; }