delphi - TButton deficiencies -



delphi - TButton deficiencies -

tbutton in delphi xe2 has style property. when property set bssplitbutton drop-down arrow displayed on right side of button:

however, drop-down area has inconveniences:

in many cases narrow, static width of drop-down area 11 pixels.

there no explicit hover indication drop-down area when mouse pointer hovers on drop-down area.

how can descendant of tbutton implemented repairs inconveniences? descendant should have dropdownwidth property , property handles , changes drop-down display when mouse hovers on drop-down area.

your descendant must phone call button_splitinfo (or send bcm_setsplitinfo) adjust split width. below run-time illustration usage, can integrate similar functionality in descendant:

procedure setbuttonsplitwidth(button: tbutton; width: integer); var info: tbuttonsplitinfo; begin if button.style = bssplitbutton begin info.mask := bcsif_size; info.size.cx := width; info.size.cy := 0; button_setsplitinfo(button.handle, info); button.invalidate; end; end;

sample result call

setbuttonsplitwidth(button2, 25);

is this:

see documentation else can do. there's no functionality modifies hovering behavior native button control. that, improve not start tbutton.

delphi delphi-xe2 split-button

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