NewFrameBuffer builds a fresh frame buffer.
()
| 44 | |
| 45 | // NewFrameBuffer builds a fresh frame buffer. |
| 46 | func NewFrameBuffer() (io.Writer, error) { |
| 47 | handle, _, err := createConsoleScreenBuffer.Call( |
| 48 | uintptr(syscall.GENERIC_READ|syscall.GENERIC_WRITE), |
| 49 | uintptr(0), |
| 50 | uintptr(0), |
| 51 | uintptr(consoleTextModeBuffer), |
| 52 | uintptr(0), |
| 53 | uintptr(0), |
| 54 | ) |
| 55 | if handle == 0 { |
| 56 | return nil, fmt.Errorf("unable to create screen buffer: %v", err) |
| 57 | } |
| 58 | fb := &FrameBuffer{ |
| 59 | handle: syscall.Handle(handle), |
| 60 | } |
| 61 | errno, _, err := setConsoleActiveScreenBuffer.Call(handle) |
| 62 | if errno == 0 { |
| 63 | return nil, fmt.Errorf("couldn't activate console screen buffer: %v", err) |
| 64 | } |
| 65 | showCursor(fb.handle, false) |
| 66 | return fb, nil |
| 67 | } |
| 68 | |
| 69 | // Write draws the character buffer to the screen frame buffer. |
| 70 | func (fb FrameBuffer) Write(p []byte) (int, error) { |
no test coverage detected