Retrieves the current input mode of a console's input buffer or the current output mode of a console screen buffer.
- hConsoleHandle [in]
A handle to the console input buffer or the console screen buffer. The handle must have the GENERIC_READ access right. For more information, see Console Buffer Security and Access Rights.
- lpMode [out]
A pointer to a variable that receives the current mode of the specified buffer.
If the hConsoleHandle parameter is an input handle, the mode can be one or more of the following values. When a console is created, all input modes except ENABLE_WINDOW_INPUT are enabled by default.
When enabled, text entered in a console window will be inserted at the current cursor location and all text following that location will not be overwritten. When disabled, all following text will be overwritten.
If the mouse pointer is within the borders of the console window and the window has the keyboard focus, mouse events generated by mouse movement and button presses are placed in the input buffer. These events are discarded by ReadFile or ReadConsole, even when this mode is enabled.
CTRL+C is processed by the system and is not placed in the input buffer. If the input buffer is being read by ReadFile or ReadConsole, other control keys are processed by the system and are not returned in the ReadFile or ReadConsole buffer. If the ENABLE_LINE_INPUT mode is also enabled, backspace, carriage return, and line feed characters are handled by the system.
This flag enables the user to use the mouse to select and edit text.
User interactions that change the size of the console screen buffer are reported in the console's input buffer. Information about these events can be read from the input buffer by applications using the ReadConsoleInput function, but not by those using ReadFile or ReadConsole.
If the hConsoleHandle parameter is a screen buffer handle, the mode can be one or more of the following values. When a screen buffer is created, both output modes are enabled by default.
Characters written by the WriteFile or WriteConsole function or echoed by the ReadFile or ReadConsole function are parsed for ASCII control sequences, and the correct action is performed. Backspace, tab, bell, carriage return, and line feed characters are processed.
When writing with WriteFile or WriteConsole or echoing with ReadFile or ReadConsole, the cursor moves to the beginning of the next row when it reaches the end of the current row. This causes the rows displayed in the console window to scroll up automatically when the cursor advances beyond the last row in the window. It also causes the contents of the console screen buffer to scroll up (discarding the top row of the console screen buffer) when the cursor advances beyond the last row in the console screen buffer. If this mode is disabled, the last character in the row is overwritten with any subsequent characters.
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero. To get extended error information, call GetLastError.
A console consists of an input buffer and one or more screen buffers. The mode of a console buffer determines how the console behaves during input or output (I/O) operations. One set of flag constants is used with input handles, and another set is used with screen buffer (output) handles. Setting the output modes of one screen buffer does not affect the output modes of other screen buffers.
The ENABLE_LINE_INPUT and ENABLE_ECHO_INPUT modes only affect processes that use ReadFile or ReadConsole to read from the console's input buffer. Similarly, the ENABLE_PROCESSED_INPUT mode primarily affects ReadFile and ReadConsole users, except that it also determines whether CTRL+C input is reported in the input buffer (to be read by the ReadConsoleInput function) or is passed to a function defined by the application.
The ENABLE_WINDOW_INPUT and ENABLE_MOUSE_INPUT modes determine whether user interactions involving window resizing and mouse actions are reported in the input buffer or discarded. These events can be read by ReadConsoleInput, but they are always filtered by ReadFile and ReadConsole.
To change a console's I/O modes, call SetConsoleMode function.
For an example, see Reading Input Buffer Events.
Minimum supported client
|Windows 2000 Professional [desktop apps only]|
Minimum supported server
|Windows 2000 Server [desktop apps only]|
- Console Functions
- Console Modes