The task is to hide and Show the console window of a C++ program. The program for the same is given below.
Note: The results of the following program can only be seen when it is executed on a console.
Example:
// C++ program to hide and show a console window #include <iostream> #include <windows.h> using namespace std;
void countdown()
{ cout << "3" << endl;
Sleep(1000);
cout << "2" << endl;
Sleep(1000);
cout << "1" << endl;
Sleep(1000);
cout << "0" << endl;
} int main()
{ countdown();
HWND window;
AllocConsole();
// You Can Find HANDLE of other windows too
window = FindWindowA( "ConsoleWindowClass" , NULL);
ShowWindow(window, 0);
countdown();
ShowWindow(window, 1);
} |
Output:
Explanation: The above program counts from 3 to 1 before the Console Window disappears. After the window has disappeared, the ShowWindow helps the program so that the Console Window reappears again after counting from 3 to 1(executing the countdown function).
The execution of the program can be understood by understanding the key functions of the program.
- #include<windows.h> – The windows.h header in C++ programming languages are specifically designed for windows and contain a very large number of windows specific functions.
- AllocConsole()- AllocConsole initializes standard input, standard output, and standard error handles for the new console.
- ShowWindow()- Sets the specified window’s show state.
- FindWindowA()– Takes string parameters and checks whose class name and window name match the specified strings