Title: Manipulating Coolbars at runtime
Question: How to send Coolbar messages to manipulate them !
Answer:
Manipulating Coolbars is a bit of a nuisance, and not as easy as most other Delphi controls.
Anyway, you have to send the coolbar messages to manipulate
bands. (See function TCoolBar.UpdateItem in ComCtrls.pas.)
Here is a very simple example. This code puts the first 3 bands
onto the 1st row (each with width = 75) and any more bands onto new rows by themselves. (Add CommCtrl to your "uses" list.)
procedure TForm1.Button1Click(Sender: TObject);
var
i: Integer;
BandInfo: TReBarBandInfo;
begin
// Delete all the bands!!
for i := 0 to Coolbar1.Bands.Count - 1 do
Coolbar1.Perform(RB_DELETEBAND, 0, 0);
// Reinsert the bands as we want them.
for i := 0 to Coolbar1.Bands.Count - 1 do
begin
FillChar(BandInfo, SizeOf(TReBarBandInfo), 0);
BandInfo.cbSize := SizeOf(TReBarBandInfo);
BandInfo.fMask := RBBIM_SIZE or RBBIM_CHILD or
RBBIM_CHILDSIZE or RBBIM_STYLE;
Coolbar1.Perform(RB_GETBANDINFO, i, Integer(@BandInfo));
if (i 2) then BandInfo.fStyle := BandInfo.fStyle or
RBBS_BREAK;
BandInfo.hwndChild := Coolbar1.Bands[i].Control.Handle;
BandInfo.cx := 75;
BandInfo.cxMinChild := Coolbar1.Bands[i].MinWidth;
BandInfo.cyMinChild := Coolbar1.Bands[i].MinHeight;
Coolbar1.Perform(RB_INSERTBAND, i, Integer(@BandInfo));
end;
end;