Using this simple tip, you can block your application to be executable only once per windows sessions. To run application again, Windows must be restarted before. Continue reading
Category Archives: System
How to detect clipboard change
Detecting clipboard change is very similar to detecting system time change. We will detect WM_DRAWCLIPBOARD system message. Continue reading
How to detect system time change
If the user changes the system time either with Date and Time properties dialog box or using command line, we can detect this by catching WM_TIMECHANGE system message. Here is how. Continue reading
Get Process Memory Info
If you want to know how many bytes of memory is using your process, here is simple example. Continue reading
Get a unique name for temporary file
Using GetTempFileName, we can create a unique name for temporary file. It’s useful when your application is using temporary files and you want to save them into default TEMP folder and use a “random” filename. Continue reading
How to detect application associated with file
To get full path to application associated with any file type, we need standard ShellAPI unit and the rest will do the FindExecutable function. Continue reading
How to minimize application with modal window
When you minimize modal window, this window is “hidden” behind (or below) application main form. Using this simple trick, we can minimize also the main application window together with modal “child” window. Continue reading
Detecting Windows boot-up state using GetSystemMetrics function
Using GetSystemMetrics function, we can detect how the system is started. Continue reading
Get user name of currently logged in user
This simple function will return name of currently logged in user. Continue reading
Delete file to Recycle Bin
This short tip will show you how to delete file to Recycle Bin. We need ShellAPI unit and the rest is very simple. Continue reading