CB_SETCUEBANNER Message

[-Alex-]

Hi all. I wanted to use the message CB_SETCUEBANNER this way to edit the control of the Combobox:

invoke GetDlgItem,hWnd,1002
invoke SendMessage,eax,CB_SETCUEBANNER,0,addr MyText

However, seems like this message is not recognized, even if i am on Win7.

But Minimum supported client is Windows Vista:
http://msdn.microsoft.com/en-us/library/bb775897(v=VS.85).aspx

Any possibility to activate/bypass it? Maybe some workaround?

[Coma]

Sure your text (addr MyText) is in the unicode format ?
If not use this to convert it:

invoke  MultiByteToWideChar,CP_ACP,0,ADDR MyText,-1,ADDR BufferWideChar,MAX_PATH

[-Alex-]

Its not the Textproblem (i hope atleast) but the following error at compiling if i try to use the Message:

error A2006: undefined symbol : CB_SETCUEBANNER
error A2114: INVOKE argument type mismatch : argument : 2

Maybe i forgot to use some inc/lib?

This are my current:

include comdlg32.inc
include kernel32.inc
include user32.inc
include windows.inc
includelib comdlg32.lib
includelib kernel32.lib
includelib user32.lib

[ramguru]

it's missing in windows.inc, so you can define them in your project file or your local hopy of \masm32\include\windows.inc

Code Select Expand


CB_SETCUEBANNER equ (CBM_FIRST + 3)
CB_GETCUEBANNER equ (CBM_FIRST + 4)


[Coma]

include \masm32\include\comctl32.inc
includelib \masm32\lib\comctl32.lib

;custom combobox control messages  - missed in windows.inc
CB_SETMINVISIBLE   equ     (CBM_FIRST + 1)
CB_GETMINVISIBLE   equ     (CBM_FIRST + 2)
CB_SETCUEBANNER  equ      (CBM_FIRST + 3)
CB_GETCUEBANNER  equ      (CBM_FIRST + 4)

Example:
MyText db "Test",0 ;==>this is not Unicode

[donkey]

include \masm32\include\comctl32.inc
includelib \masm32\lib\comctl32.lib

You shouldn't need the comctl API to use them, it only requires SendMessage, though I guess you have to call InitCommonControls - Never mind.

[-Alex-]

Added:
1)
include comctl32.inc
includelib comctl32.lib
2)
.const
CB_SETMINVISIBLE   equ     (CBM_FIRST + 1)
CB_GETMINVISIBLE   equ     (CBM_FIRST + 2)
CB_SETCUEBANNER  equ      (CBM_FIRST + 3)
CB_GETCUEBANNER  equ      (CBM_FIRST + 4)
3)
invoke GetDlgItem,hWnd,1002
mov Result,eax
invoke MultiByteToWideChar,CP_ACP,0,ADDR MyText,-1,ADDR MyTextBuffer,50h
invoke InitCommonControls
invoke SendMessage,Result,CB_SETCUEBANNER,0,addr MyTextBuffer

Still its empty, but atleast CB_SETCUEBANNER is recognized now and shown as MSG(1703) in Olly.

Edit/Add:
I added the invokes under .if uMsg==WM_INITDIALOG

[dedndave]

EQUates need not be in a segment/section
they are only constants to the assembler - not the linker

[-Alex-]

I just added it to be sure, i also have same in windows.inc, however, result is 0, but error code is ERROR_SUCCESS. Thats why i asked u all, as it is maybe just a simple message, which cause so much trouble for me, instead of the project i am currently working on should cause so much trouble..

[dedndave]

InitCommonControls...

Ensures that the common control DLL (Comctl32.dll) is loaded, and registers specific common control
classes from the DLL. An application must call this function before creating a common control.

i would put that in the init stage of the program

still looking...

[dedndave]

the "Return" value should be a handle
if it is 0, that is "INVALID_HANDLE" - not "ERROR_SUCCESS"
in such cases (where 0=error), you have to use GetLastError to retrieve the error code
you can do it with a .IF structure, but i would write the code - lol
something like this....

Code Select Expand

;program initialization section

invoke InitCommonControls

;

invoke GetDlgItem,hWnd,1002
or eax,eax
jnz @f

invoke GetLastError
jmp Show_Error_Message

@@:
push eax
invoke MultiByteToWideChar,CP_ACP,0,ADDR MyText,-1,ADDR MyTextBuffer,50h
pop eax
invoke SendMessage,eax,CB_SETCUEBANNER,0,addr MyTextBuffer



[dedndave]

you can use FormatMessage to get the text for the error

Code Select Expand

;eax = error code
        INVOKE  FormatMessage,FORMAT_MESSAGE_FROM_SYSTEM,NULL,eax,0,offset ErrTextBuf,sizeof ErrTextBuf,NULL

[dedndave]

i would probably change the order of things a bit...

Code Select Expand

invoke MultiByteToWideChar,CP_ACP,0,ADDR MyText,-1,ADDR MyTextBuffer,50h
invoke GetDlgItem,hWnd,1002
or eax,eax
jnz @f

invoke GetLastError
invoke FormatMessage,FORMAT_MESSAGE_FROM_SYSTEM,NULL,eax,0,offset ErrTextBuf,sizeof ErrTextBuf,NULL
jmp Show_Error_Message

@@:
invoke SendMessage,eax,CB_SETCUEBANNER,0,addr MyTextBuffer

[-Alex-]

I attached my sample, which jumps over the GetLastError, but still didnt show the new banner.

[dedndave]

Bill gives a great example.....

\masm32\examples\bcraven\controls