Listview grid lines color

[2B||!2B]

Hey there,

Is there a way to change the Windows Lisview control's grid lines color?
There doesn't seem to be any message setting this color. LVM_SETBKCOLOR only changes the background color but the grid lines still paints in white...
What options are available besides owner drawn?

[jj2007]

It's ownerdraw. Google "listview" "ODA_DRAWENTIRE"

[NoCforMe]

Microsoft Learn: About Custom Draw

[2B||!2B]

WM_DRAWITEM won't help if you leave the default WM_PAINT as those lines are drawn after you handle WM_DRAWITEM. It's kinda flimsy design. By default, the grid lines color is a hardcoded of COLOR_BTNFACE color which maps to RGB 240 240 240 on my system. It's drawn inside uxtheme.dll if we use Common controls 6 manifest. That color is passed to an hDC by SetBkColor function. I've checked the owner drawn and it seems there is only one solution which is overriding the default painting in WM_PAINT because if you leave it to the system, it will just paint the grid lines using its own colors...

Here is a FillRect called on response to WM_DRAWITEM ODA_DRAWENTIRE

Code Select Expand

.elseif EAX == WM_DRAWITEM
MOV EDI,lParam
.if [EDI].DRAWITEMSTRUCT.itemAction == ODA_DRAWENTIRE
invoke CreateSolidBrush,10111114
invoke FillRect,[EDI].DRAWITEMSTRUCT.hdc,addr [EDI].DRAWITEMSTRUCT.rcItem,EAX

.endif

[2B||!2B]

Here is my attempt to draw them manually using custom draw mechanism in response to CDDS_POSTPAINT notification.

There is a problem with the paint. When you scroll vertically, lines won't draw correctly unless you minimize/restore the window. I've spent some time trying to figure out a fix for this but no go.

Any help would be appreciated.


Edit: Removed iGroupId reference.

[jj2007]

I'm afraid your code is not compatible with the Masm32 SDK.

Code Select Expand

Error A2063: Symbol not defined : LV_ITEMA.iGroupId

[2B||!2B]

Sorry, I had slightly modified LV_ITEMA/W to support for groups insertion as it's outdated but it's not necessary in this example.

Code Select Expand

LV_ITEMA STRUCT
  imask         DWORD      ?
  iItem         DWORD      ?
  iSubItem      DWORD      ?
  state         DWORD      ?
  stateMask     DWORD      ?
  pszText       DWORD      ?
  cchTextMax    DWORD      ?
  iImage        DWORD      ?
  lParam        DWORD      ?
  iIndent       DWORD      ?
  iGroupId DWORD    ?
  cColumns DWORD    ?
  puColumns     DWORD    ?
  piColFmt     DWORD    ?
  iGroup     DWORD    ?
 
LV_ITEMA ENDS

LV_ITEMW STRUCT
  imask         DWORD      ?
  iItem         DWORD      ?
  iSubItem      DWORD      ?
  state         DWORD      ?
  stateMask     DWORD      ?
  pszText       DWORD      ?
  cchTextMax    DWORD      ?
  iImage        DWORD      ?
  lParam        DWORD      ?
  iIndent       DWORD      ?
  iGroupId DWORD    ?
  cColumns DWORD    ?
  puColumns     DWORD    ?
  piColFmt     DWORD    ?
  iGroup     DWORD    ?
LV_ITEMW ENDS

[zedd151]

Sorry, I had slightly modified LV_ITEMA/W to support for groups insertion as it's outdated but it's not necessary in this example.

If a new structure member is referenced in the code:

Code Select Expand

    MOV LVI.iGroupId,EAX
then the modified version of the structure should be included in the source or include file, since not everyone will have the modified version. 

[2B||!2B]

Sorry, I had slightly modified LV_ITEMA/W to support for groups insertion as it's outdated but it's not necessary in this example.

If a new structure member is referenced in the code:

Code Select Expand

    MOV LVI.iGroupId,EAX
then the modified version of the structure should be included in the source or include file, since not everyone will have the modified version. 

I would've included the modification had I remembered beforehand. I'll update the attached code to remove the reference.

[zedd151]

I would've included the modification had I remembered beforehand. I'll update the attached code to remove the reference.

[jj2007]

I'll update the attached code to remove the reference.

Code Select Expand

Tmp_File.asm(217) : Error A2210: Syntax error: ,
return(1)[macros.asm]
Apparently your Masm32 SDK is heavily modified. No good, especially not in The Campus.