Fill parent in Adobe Flex / MXML
I am attempting to implement a layout in Adobe Flex 4.5 / MXML where I have multiple controls in an HBox that - in total - consume all available horizontal screen estate. Some use a relative with (percentage), some an absolute width (pixels) and one is supposed to consume whatever space is still left, such as:

    +----------------------+-----------------------+------+
    |         35%          |      fill parent      | 10px |
    +----------------------+-----------------------+------+

How would I achieve this in Flex (is there something comparable to Android's layout_width="fillparent")?

Due to the fact that there are elements that have an absolute width I cannot easily calculate the width of the filler as a percentage a priori (as it varies with the screen width).

Setting the filler's width to 100% also does not work as this will shrink the 35% area below 35%.
Fill parent in Adobe Flex / MXML
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I am attempting to implement a layout in Adobe Flex 4.5 / MXML where I have multiple controls in an HBox that - in total - consume all available horizontal screen estate. Some use a relative with (percentage), some an absolute width (pixels) and one is supposed to consume whatever space is still left, such as:

    +----------------------+-----------------------+------+
    |         35%          |      fill parent      | 10px |
    +----------------------+-----------------------+------+

How would I achieve this in Flex (is there something comparable to Android's layout_width="fillparent")?

Due to the fact that there are elements that have an absolute width I cannot easily calculate the width of the filler as a percentage a priori (as it varies with the screen width).

Setting the filler's width to 100% also does not work as this will shrink the 35% area below 35%.