The bottom margin for the contents of this style box. Increasing this value reduces the space available to the contents from the bottom.
If this value is negative, it is ignored and a child-specific margin is used instead. For example for StyleBoxFlat the border thickness (if any) is used instead.
It is up to the code using this style box to decide what these contents are: for example, a Button respects this content margin for the textual contents of the button.
getMargin should be used to fetch this value as consumer instead of reading these properties directly. This is because it correctly respects negative values and the fallback mentioned above.
The bottom margin for the contents of this style box. Increasing this value reduces the space available to the contents from the bottom. If this value is negative, it is ignored and a child-specific margin is used instead. For example for StyleBoxFlat the border thickness (if any) is used instead. It is up to the code using this style box to decide what these contents are: for example, a Button respects this content margin for the textual contents of the button. getMargin should be used to fetch this value as consumer instead of reading these properties directly. This is because it correctly respects negative values and the fallback mentioned above.