Panel with calculator

The program is a sidebar with a simple 10-digit calculator for performing four arithmetic operations on numbers in the form with a natural decimal point position. The main features of the program are:

• Working under operating systems from Windows 2000 to 32- and 64-bit Windows 10;
• Always visible on the screen and available for use;
• quickly switch between the calculator and another program using the keyboard;
• Transferring values via the Windows clipboard.

No special installation is required: the EXE file can be run in any convenient way.

After starting, the program captures a strip on the right side of the screen, which it uses for its needs. At the bottom of the bar there is a calculator, at the top there are controls and a calendar that displays the current date.

When developing the program, the goal was to make the user of the "real" calculator experience minimal discomfort. To do this, the program implements:

• calculations with a constant;
• calculations with memory;
• Overflow and error handling.