El tema es que solo me toma una rayita en la parte superior para hacer doble click.
Te adjunto la imagen para que te des cuenta.
![Image](http://samvt.com.ar/imagesfw/testmdi.jpg)
otra cosa en la linea 168 comente esto //:nAlign := 3 porque daba error, luego lo compilo y te adjunto el error
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Application
===========
Path and name: C:\FEFWH\testmdi.exe (32 bits)
Size: 3,958,784 bytes
Compiler version: Harbour 3.2.0dev (r1801051438)
FiveWin version: FWH 18.04
C compiler version: Borland/Embarcadero C++ 7.0 (32-bit)
Windows version: 6.2, Build 9200
Time from start: 0 hours 0 mins 0 secs
Error occurred at: 10/23/18, 17:11:00
Error description: Error BASE/1075 Argument error: >
Args:
[ 1] = U
[ 2] = N 1035
Stack Calls
===========
Called from: .\source\classes\TEXPLBAR.PRG => TEXPLORERBAR:RESIZE( 244 )
Called from: .\source\classes\CONTROL.PRG => TPANEL:_NALIGN( 1561 )
Called from: testmdi.prg => HAZEXPLORERBAR( 168 )
Called from: testmdi.prg => (b)MAIN( 56 )
Called from: .\source\classes\WINDOW.PRG => TWINDOW:ACTIVATE( 1041 )
Called from: testmdi.prg => MAIN( 56 )
Saludos y Muchas gracias
Marcelo