typedef struct {
int wStructSize;
int x;
int y;
int dx;
int dy;
int wMax;
char rgchMember[2];
} HELPWININFO;
The HELPWININFO structure contains the size and position of a secondary help window. An application can set this size by calling the WinHelp function with the HELP_SETWINPOS value.
wStructSize
Specifies the size of the HELPWININFO structure.
x
Specifies the x-coordinate of the upper-left corner of the window.
y
Specifies the y-coordinate of the upper-left corner of the window.
dx
Specifies the width of the window.
dy
Specifies the height of the window.
wMax
Specifies whether the window should be maximized or set to the given position and dimensions. If this value is 1, the window is maximized. If it is zero, the size and position of the window are determined by the x, y, dx, and dy members.
rgchMember
Specifies the name of the window.
Microsoft Windows Help divides the display into 1024 units in both the x- and y-directions. To create a secondary window that fills the upper-left quadrant of the display, for example, an application would specify zero for the x and y members and 512 for the dx and dy members.