Specifies the block progression and layout orientation.
HRESULT value = object.put_msBlockProgression( v);HRESULT value = object.get_msBlockProgression(* p);
Default. Top-to-bottom block flow. Layout is horizontal.
Right-to-left block flow. Layout is vertical.
Bottom-to-top block flow. Layout is horizontal.
Left-to-right block flow. Layout is vertical.
tb | rl | bt | lr
|Applies To||All elements|
There are no standards that apply here.
In vertical layout, text lines are rotated 90° clockwise. Images are not rotated, but tables are. Box layout in vertical orientations is exactly analogous to layout in the horizontal orientation: width, height, top, bottom, right, and left do not rotate with the text.
Only one block progression is active at a time; these values cannot be combined. See IHTMLCSSStyleDeclaration::writingMode for additive block progression values.
This property is based on the block-progression property of the CSS3 Text Layout module.
Minimum supported client
Windows XP with SP2
Minimum supported server
Windows Server 2003