Board index » cppbuilder » Help: Problems with resource strings.

2007-03-20 01:16:14 AM
cppbuilder89
I opened Pandoras box when I added themeing to my application. Now I am
trying to externalize the themes into resource only dlls. This turned
out to be pretty simple, and ALMOST everything works. I can read
imbedded text files, bitmaps from the resource dll like a charm.
The problems is how to read items from a STRINGTABLE in the resources.
I have tried several iterations of what looks like a simple task but
either it just silently fails to load the string, or I get an AV error.
I did a search and found several Delphi examples and used them as a
basis for my own test program. My Delphi test works perfectly:
procedure TForm1.ButtonClick(Sender: TObject);
var
h: THandle;
tmpStream: TResourceStream;
begin
h := LoadLibrary('bitmaps.dll');
try
if h <>0 then
begin
ElLabel1.Caption := GetResourceString(h,1000);
tmpStream := TResourceStream.Create( h, 'NewTheme', 'TEXT' );
try
sm1.LoadFromStream( tmpStream );
finally
tmpStream.Free;
end;
Image.Picture.Bitmap.LoadFromResourceName(h,'ButtonUp');
end;
finally
FreeLibrary(h);
end;
end;
Since my app is written in C++ I tried to implement it in C++ but ran
into this problem. This version doesn't error, but will not load the
Label->Caption. Everything else works fine. I left some comments so
you could see some of the other things I was trying.
void __fastcall TForm2::ButtonClick(TObject *Sender)
{
//HANDLE hlib;
//HINSTANCE hlib;
THandle * hlib;
hlib = (THandle *)LoadLibrary("IceBlue.DLL");
try
{
if (hlib)
{
// get data from a string table
Label->Caption.LoadString(hlib,1);
//ResourceString *r;
//r->module = hlib;
//r->ident = 1;
//Label->Caption = System::LoadResourceString(r);
// get data from a bitmap resource
//Image->Picture->Bitmap->LoadFromResourceName((unsigned int)hlib,
"ilBg72");
ilBg72->ResInstLoad((unsigned int)hlib,rtBitmap,"ilBg72",clWhite);
ilBg72->GetBitmap(0,Image->Picture->Bitmap);
// get data from a text resource
TResourceStream * tmpStream;
tmpStream = new TResourceStream((unsigned int)
hlib,"StyleManager","TEXT");
try
{
sm1->LoadFromStream(tmpStream);
}
__finally
{
delete tmpStream;
}
}
}
__finally
{
FreeLibrary(hlib);
}
}
I thought the bitmaps, or the resource stream would be a problem, but
they turned out to be easy.
What dumb mistake am I making?
 

A Nonymous wrote:
Alternative:
TChar buffer[1024];
LoadString( hlib,1, buffer, 1024 );
Label->Caption = buffer;
 

Bob Gonder < XXXX@XXXXX.COM >wrote in
may have been the type of hlib I was using at the time. I tried HANDLE,
HINSTANCE, and THandle but I guess I just didn't get the right combination.
Thanks.
 

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