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Can a console have more than one screen buffer?
A console can have multiple screen buffers. The active screen buffer is the one that is displayed on the screen. The system creates a screen buffer whenever it creates a new console.
How to determine the cursor position in a screen buffer?
To determine the current cursor position in the coordinate system of a screen buffer, use GetConsoleScreenBufferInfo. You can use SetConsoleCursorPosition to set the cursor position and, thereby, control the placement of text that is written or echoed by the high-level I/O functions.
What is the appearance of the screen buffer?
Cursor Appearance and Position. A screen buffer’s cursor can be visible or hidden. When it is visible, its appearance can vary, ranging from completely filling a character cell to appearing as a horizontal line at the bottom of the cell.
How to set the appearance of the cursor on the console?
To set the appearance and visibility of the cursor, use the SetConsoleCursorInfo function. Characters written by the high-level console I/O functions are written at the current cursor location, advancing the cursor to the next location.
What are the handles of the input buffer?
During console creation, the system creates these handles. Initially, STDIN is a handle to the console’s input buffer, and STDOUT and STDERR are handles of the console’s active screen buffer. However, the SetStdHandle function can redirect the standard handles by changing the handle associated with STDIN, STDOUT, or STDERR.
How are handles used in a console process?
c A console process uses handles to access the input and screen buffers of its console. A process can use the GetStdHandle, CreateFile, or CreateConsoleScreenBuffer function to open one of these handles.
What should the return value of createconsolescreenbuffer be?
The type of console screen buffer to create. The only supported screen buffer type is CONSOLE_TEXTMODE_BUFFER. Reserved; should be NULL. If the function succeeds, the return value is a handle to the new console screen buffer. If the function fails, the return value is INVALID_HANDLE_VALUE.