How to resolve a dialog box to maximize the cover task bar

Problem Description : The General dialog box uses ShowWindow (sw_showmaximized) to maximize the window, but if the dialog box is set to no border, the dialog box will cover the taskbar.

Workaround :

Workaround One:

int Sx=getsystemmetrics (sm_cxfullscreen); Get the size of the screen-wide
int Sy=getsystemmetrics (sm_cyfullscreen); Get high
MoveWindow (0,0,sx,sy); Move window

Workaround Two:

CRect M_rcworkarea;
SystemParametersInfo (Spi_getworkarea, 0, &m_rcworkarea, 0);
MoveWindow (&m_rcworkarea); Move window

How to resolve a dialog box to maximize the cover task bar