The problem that the program interface cannot be minimized by clicking the taskbar icon of the program

Generally, click the icon in the task bar of the program to respond to the Message wm_syscommand, and then intercept the message (NID & 0xfff0) = SC _minimize IN THE onsyscommand () message function.

Then

Showwindow (sw_hide); // hide the current window
Shell_policyicon (nim_add, & m_policydata); // register the taskbar Information

The window can be minimized.

However, I do not know why my program cannot respond to the onsyscommand message.

Just add the upper and lower sentences in initdialog,

Modifystyle (0, ws_sysmenu | ws_minimizebox, 0 );

Recall that the entire problem was caused by not adding a minimized menu to the window when creating the program window.

Therefore, modifystyle (0, ws_sysmenu | ws_minimizebox, 0) is used. After the minimal system menu is added, the system can respond to the wm_syscommand message.