An application sends the WM_MDITILE message to a multiple document interface (MDI) client window to arrange all of its MDI child windows in a tile format.
WM_MDITILE
wParam = (WPARAM) (UINT) fuTile; // tiling flag
lParam = 0; // not used; must be zero
Parameters
fuTile
Specifies a tiling flag. This parameter can be one of the following values:
| Value | Meaning |
| MDITILE_HORIZONTAL | Tiles MDI child windows so that they are wide rather than tall. |
| MDITILE_SKIPDISABLED | Prevents disabled MDI child windows from being tiled. |
| MDITILE_VERTICAL | Tiles MDI child windows so that they are tall rather than wide. |
Return Values
If the message succeeds, the return value is TRUE.
If the message fails, the return value is FALSE.
See Also