TScrollBarInfo似乎有信息,但用下面的代码返回false,不知道哪里错了var
Info: TScrollBarInfo;
begin
ZeroMemory(@Info, SizeOf(TScrollBarInfo));
if windows.GetScrollBarInfo(ScrollBox.Handle, OBJID_HSCROLL, info) then
beep;
Info: TScrollBarInfo;
begin
ZeroMemory(@Info, SizeOf(TScrollBarInfo));
if windows.GetScrollBarInfo(ScrollBox.Handle, OBJID_HSCROLL, info) then
beep;
begin
SbarHt:=getsystemmetrics(SM_CXHSCROLL);
SbarWh:=getsystemmetrics(SM_CYHSCROLL);
form1.Caption:='宽度:'+inttostr(sbarwh)+' Pixels'+#20
+'高度:'+inttostr(sbarht)+' Pixels';
end;