.NET IoT Libraries 2.2.0 Iot.Device.Graphics BdfFont BitmapImage BitmapImage 构造函数 属性 方法 AsByteSpan 清除 CreateBitmap CreateFromFile CreateFromStream Dispose GetDrawingApi GetPixel RegisterImageFactory SaveToFile SaveToStream SetPixel
示例代码 importandroid.graphics.Bitmap;importandroid.os.Environment;importjava.io.File;importjava.io.FileNotFoundException;importjava.io.FileOutputStream;importjava.io.IOException;publicclassImageUtil{publicstaticvoidsaveBitmapToFile(Bitmapbitmap){FileOutputStreamoutputStream=null;try{Filefile=newFile(Envir...
publicvoidsaveBitmap(Bitmapbitmap,StringfilePath){ByteArrayOutputStreamstream=newByteArrayOutputStream();bitmap.compress(Bitmap.CompressFormat.JPEG,100,stream);byte[]byteArray=stream.toByteArray();try{FileOutputStreamfos=newFileOutputStream(filePath);fos.write(byteArray);fos.close();}catch(IOExcepti...
static bool SaveBitmapToFile(HBITMAP bitmap, const string& filename); //保存位图到文件 private: static WORD GetBitmapBitCount(); //计算位图文件每个像素所占字节数 static void ProcessPalette(HBITMAP hBitmap, const BITMAP& bitmap, DWORD paletteSize, LPBITMAPINFOHEADER lpBmpInfoHeader); //处...
I am trying to write a sample that take screenshot of my computer and save it to bmp file. When i debug i saw that the biCompression member of BITMAPINFOHEADER is BI_BITFIELDS and biBitCount is 32 and my sample code is:unsigned int cx = GetSystemMetrics(SM_CXSCREEN), cy = ...
File saveFile=newFile(cacheDirectory, name); boolean saved=false; FileOutputStream os=null;try{ Log.d("FileCache","Saving File To Cache"+saveFile.getPath()); os=newFileOutputStream(saveFile); bitmap.compress(CompressFormat.PNG,100, os); ...
(Context context,Bitmap mBitmap){String savePath;File filePic;if(Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED)){savePath=SD_PATH;}else{savePath=context.getApplicationContext().getFilesDir().getAbsolutePath()+IN_PATH;}try{filePic=newFile(savePath+generateFileName()+"....
Encodes a bitmap image to a specifiedStream. C# publicvirtualvoidSave(System.IO.Stream stream); Parameters stream Stream Identifies the file stream that this bitmap is encoded to. Exceptions InvalidOperationException The bitmap has already been encoded. ...
下面是创建编码器对象的部分示例。 此示例假定你选择了一个具有Windows.Storage.Pickers.FileSavePicker 的文件。 有关选择文件、创建编码器和对图像进行编码的完整说明,请参阅映像 C# privateasyncvoidSaveSoftwareBitmapToFile(SoftwareBitmap softwareBitmap, StorageFile outputFile){using(IRandomAccessStream stream =aw...
title=Write%20the%20content%20of%20a%20canvas%20to%20a%20file&referringTitle=Home上有一个将...