Bitmap
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]Bitmap class
Represents a GDI+ bitmap image. Objects of this class should only be allocated using System::MakeObject() function. Never create instance of this type on stack or using operator new, as it will result in runtime errors and/or assertion faults. Always wrap this class into System::SmartPtr pointer and use this pointer to pass it to functions as argument.
class Bitmap : public System::Drawing::Image
Methods
| Method | Description |
|---|---|
| bool BeginPixelProcessing(bool) | Enables pixel processing mode. |
| Bitmap(const SharedPtr<Image>&) | Constructs a new Bitmap object from the specified existing image. |
| Bitmap(const SharedPtr<System::IO::Stream>&, bool) | Constructs a new Bitmap object from the specified stream. |
| Bitmap(const String&) | Constructs a new Bitmap object from the specified file. |
| Bitmap(const String&, bool) | Constructs a new Bitmap object from the specified file. |
| Bitmap(int, int, Imaging::PixelFormat) | Constructs a new Bitmap object that represents a bitmap image with the specified width, height, pixel format and pixel data. |
| Bitmap(const SharedPtr<Image>&, const Size&) | Constructs a new Bitmap object from the specified existing image, scaled to the specified size. |
| Bitmap(const SharedPtr<Image>&, int, int) | Constructs a new Bitmap object from the specified existing image with width and height scaled to the specified values. |
| SharedPtr<Image> Clone() override | Creates a copy of the current object. |
| SharedPtr<Bitmap> Clone(Rectangle, Imaging::PixelFormat) | Creates a Bitmap object that represents a copy of a region of the bitmap image represented by the current object. |
| SharedPtr<Bitmap> Clone(RectangleF, Imaging::PixelFormat) | Creates a Bitmap object that represents a copy of a region of the bitmap image represented by the current object. |
| ArrayPtr<uint8_t> ComputeHash() | Computes the SHA1 hash value. |
| static SharedPtr<Bitmap> ConvertToARGBImage(const SharedPtr<Bitmap>&) | Creates a copy of the specified bitmap image with pixel format changed to Format32bppArgb. |
| void Dispose() override | Releases all resources aquired by the current object. |
| bool EndPixelProcessing(bool) | Disables pixel processing mode. |
| virtual bool Equals(ptr) | Compares objects using C# Object.Equals semantics. |
| static std::enable_if<IsSmartPtr<T1>::value&&IsSmartPtr<T2>::value, bool>::type Equals(T1 const&, T2 const&) | Compares reference type objects in C# style. |
| static std::enable_if<!IsSmartPtr<T1>::value&&!IsSmartPtr<T2>::value, bool>::type Equals(T1 const&, T2 const&) | Compares value type objects in C# style. |
| static bool Equals(float const&, float const&) | Emulates C#-style floating point comparison where two NaNs are considered equal even though according to IEC 60559:1989 NaN is not equal to any value, including NaN. |
| static bool Equals(double const&, double const&) | Emulates C#-style floating point comparison where two NaNs are considered equal even though according to IEC 60559:1989 NaN is not equal to any value, including NaN. |
| virtual bool FastCast(const Details::FastRttiBase&, void **) const | For internal purposes only. |
| static SharedPtr<Image> FromFile(const String&, bool) | Creates an Image object from the specified file. |
| static SharedPtr<Bitmap> FromHbitmap(IntPtr) | Constructs a Bitmap object from the specified GDI bitmap. |
| static SharedPtr<Image> FromStream(const SharedPtr<System::IO::Stream>&, bool, bool) | Creates an Image object from the specified stream. |
| virtual int32_t get_Flags() const | Returns a bit-wise combination of ImageFlags enum values that represents the attributes of the image. |
| ArrayPtr<Guid> get_FrameDimensionsList() const | Returns an array of GUIDs that represent the dimensions of frames within the image represented by the current object. |
| int get_Height() const override | Returns the height of the image in pixels. |
| float get_HorizontalResolution() const | Returns the horizontal resolution of the image represented by the current object in pixels per inch. |
| Imaging::ColorPalettePtr get_Palette() const override | Returns the color palette used by the image represented by the current object. |
| Imaging::PixelFormat get_PixelFormat() const override | Returns the pixel format of the image represented by the current object. |
| virtual ArrayPtr<int> get_PropertyIdList() const | Gets IDs of the property items stored in this image. |
| virtual ArrayPtr<SharedPtr<Imaging::PropertyItem>> get_PropertyItems() const | Gets all the property items(pieces of metadata) stored in this image. |
| Imaging::ImageFormatPtr get_RawFormat() const override | Returns the file format of the image represented by the current object. |
| Size get_Size() const | Returns a Size object that represents the width and height of the image in pixels. |
| virtual System::SharedPtr<System::Object> get_Tag() const | Gets an object that provides additional data about the image. |
| float get_VerticalResolution() const | Returns the vertical resolution of the image represented by the current object in pixels per inch. |
| int get_Width() const override | Returns the width of the image in pixels. |
| RectangleF GetBounds(GraphicsUnit&) | Returns the image bounds in the specified measurement units. |
| Detail::SmartPtrCounter * GetCounter() | Gets reference counter data structure associated with the object. |
| int GetFrameCount(const Imaging::FrameDimensionPtr&) | Returns the number of frames of the specified frame dimension. |
| virtual int32_t GetHashCode() const | Analog of C# Object.GetHashCode() method. Enables hashing of custom objects. |
| IntPtr GetHbitmap() | Creates a GDI bitmap object from the bitmap represented by the current object. |
| Color GetPixel(int, int) | Returns the color of the specified pixel. |
| static int GetPixelFormatSize(Imaging::PixelFormat) | Returns the number of bits used to represent the color depth in the specified pixel format. |
| const SkBitmap * GetSkBitmap() const override | Returns a raw pointer to the underlying SkBitmap object. |
| SharedPtr<Image> GetThumbnailImage(int, int, Image::GetThumbnailImageAbort, IntPtr) | Gets a thumbnail for this System::Drawing::Image object. |
| virtual const TypeInfo& GetType() const | Gets actual type of object. Analog of C# System.Object.GetType() call. |
| virtual bool Is(const TypeInfo&) const | Check if object represents an instance of type described by targetType. Analog of C# ‘is’ operator. |
| static bool IsAlphaPixelFormat(Imaging::PixelFormat) | Determines if the specified pixel format contains alpha information. |
| bool IsMultiImage() const override | Returns whether the original format is a multi-image. |
| void Lock() | Implements C# lock() statement locking. Call directly or use LockContext sentry object. |
| Imaging::BitmapDataPtr LockBits(const Rectangle&, Imaging::ImageLockMode, Imaging::PixelFormat) | Locks a Bitmap into system memory. |
| Imaging::BitmapDataPtr LockBits(const Rectangle&, Imaging::ImageLockMode, Imaging::PixelFormat, const Imaging::BitmapDataPtr&) | Locks a Bitmap into system memory. |
| void MakeTransparent(Color) | Changes the color of all pixels with the specified color to transparent. |
| virtual ptr MemberwiseClone() const | Analog of C# Object.MemberwiseClone() method. Enables cloning custom types. |
| Object() | Creates object. Initializes all internal data structures. |
| Object(Object const&) | Copy constructor. Doesn’t copy anything, really, just initializes new object and enables copy constructing subclasses. |
| Object& operator=(Object const&) | Assignment operator. Doesn’t copy anything, really, just initializes new object and enables copy constructing subclasses. |
| void PremultipleColors() | Premultiplies the colors of the pixels of the image represented by the current object. |
| static bool ReferenceEquals(ptr const&, ptr const&) | Compares objects by reference. |
| static std::enable_if<!IsSmartPtr<T>::value, bool>::type ReferenceEquals(T const&, T const&) | Compares objects by reference. |
| static std::enable_if<!IsSmartPtr<T>::value, bool>::type ReferenceEquals(T const&, std::nullptr_t) | Reference-compares value type object with nullptr. |
| bool ReferenceEquals(String const&, std::nullptr_t) | Specialization of Object::ReferenceEquals for case of string and nullptr. |
| bool ReferenceEquals(String const&, String const&) | Specialization of Object::ReferenceEquals for case of strings. |
| int RemovedSharedRefs(int) | Decreases shared reference count by specified value. |
| void RotateFlip(RotateFlipType) override | Rotates image to multiple of 90 degrees and flips. |
| void Save(const String&) | Saves the image represented by the current object to the specified file in PNG format. |
| void Save(const String&, const Imaging::ImageFormatPtr&) | Saves the image represented by the current object to the specified file in the specified format. |
| void Save(const SharedPtr<System::IO::Stream>&, const Imaging::ImageFormatPtr&) | Saves the image represented by the current object to the specified stream in the specified format. |
| void Save(const String&, const Imaging::ImageCodecInfoPtr&, const Imaging::EncoderParametersPtr&) | Saves the image represented by the current object to the specified file using the specified encoder and encoder parameters. |
| void Save(const SharedPtr<System::IO::Stream>&, const Imaging::ImageCodecInfoPtr&, const Imaging::EncoderParametersPtr&) | Saves the image represented by the current object to the specified stream using the specified encoder and encoder parameters. |
| void SaveAdd(const Imaging::EncoderParametersPtr&) | Adds a frame to the file or stream specified in a previous call to the Save() method. |
| void SaveAdd(const SharedPtr<Image>&, const Imaging::EncoderParametersPtr&) | Adds a frame to the file or stream specified in a previous call to the Save() method. |
| int SelectActiveFrame(const Imaging::FrameDimensionPtr&, int) | Selects the specified frame. |
| void set_Palette(Imaging::ColorPalettePtr) override | Sets the color palette used by the image represented by the current object. |
| virtual void set_Tag(const System::SharedPtr<System::Object>) | Sets an object that provides additional data about the image. |
| void SetPixel(int, int, Color) | Sets the color of the specified pixel in the bitmap image represented by the current object. |
| void SetResolution(float, float) | Sets the resolution of the image. |
| virtual void SetTemplateWeakPtr(uint32_t) | Set n’th template argument a weak pointer (rather than shared). Allows switching pointers in containers to weak mode. |
| int SharedCount() const | Gets current value of shared reference counter. |
| Object * SharedRefAdded() | Increments shared reference count. Shouldn’t be called directly; instead, use smart pointers or ThisProtector. |
| int SharedRefRemovedSafe() | Decrements and returns shared reference count. Shouldn’t be called directly; instead, use smart pointers or ThisProtector. |
| virtual String ToString() const | Analog of C# Object.ToString() method. Enables converting custom objects to string. |
| static const TypeInfo& Type() | Implements C# typeof(System.Object) construct. |
| void Unlock() | Implements C# lock() statement unlocking. Call directly or use LockContext sentry object. |
| void UnlockBits(const Imaging::BitmapDataPtr&) | Unlocks the specified bitmap from system memory. |
| Detail::SmartPtrCounter * WeakRefAdded() | Increments weak reference count. Shouldn’t be called directly; instead, use smart pointers or ThisProtector. |
| void WeakRefRemoved() | Decrements weak reference count. Shouldn’t be called directly; instead, use smart pointers or ThisProtector. |
| virtual ~Object() | Destroys object. Frees all internal data structures. |
See Also
- Class Image
- Namespace System::Drawing
- Library Aspose.Slides