Bug in TBitmap [Fixed]

[Enrico Maria Giordano]

Please try the following sample (with the manifest file). Click on the checkbox and you'll see that it doesn't change its status. It works fine if the bitmap exists.

Code: Select all

#include "Fivewin.ch"


FUNCTION MAIN()

    LOCAL oDlg

    LOCAL lVar := .F.

    DEFINE DIALOG oDlg;
           RESOURCE "TEST"

    REDEFINE BITMAP;
             ID 101 OF oDlg;
             FILE "NONEXISTENT.BMP"

    REDEFINE CHECKBOX lVar;
             ID 102 OF oDlg

    ACTIVATE DIALOG oDlg;
             CENTER

    RETURN NIL

Code: Select all

1 24 "c:\fwh\samples\winxp\WindowsXP.Manifest"

TEST DIALOG 0, 0, 300, 300
STYLE DS_MODALFRAME | WS_POPUP | WS_CAPTION | WS_SYSMENU
FONT 8, "MS Sans Serif"
LANGUAGE LANG_NEUTRAL, SUBLANG_NEUTRAL
{
 CONTROL "", 101, "TBitmap", WS_CHILD | WS_VISIBLE, 10, 10, 57, 62
 CONTROL "TCheckBox", 102, "BUTTON", BS_AUTOCHECKBOX | BS_LEFTTEXT | WS_CHILD | WS_VISIBLE | WS_TABSTOP, 120, 30, 46, 13
}

EMG

[Enrico Maria Giordano]

This is a fix that seems to work:

Code: Select all

::LoadImage( cResName, If( cBmpFile != nil .and. File( cBmpFile ), AllTrim( cBmpFile ), nil ) )

EMG

[nageswaragunupudi]

The problem is because the following lines in the Paint() method

Code: Select all

   if Empty( ::hBitmap ) .and. ! Empty( ::cBmpFile )
      ::LoadBmp( ::cBmpFile )
   endif
 

keep calling LoadImage() repeatedly.

This is fixed by inserting these lines before present line no. 833 ( FWH18.03)

Code: Select all

      if ::hBitmap == 0
         ::cResName  := ::cBmpFile := nil
      endif
 

in the method LoadImage().

Thank you for pointing out this bug.