outlook toolbar: 256 color bitmaps via exchange client extension (ECE)?

[Guest]

hello world,

there has been a similar question back in 2004 - with no solution, yet:
http://groups.google.com/group/micr...addins/browse_thread/thread/29f3995045b77b4b/

i'm working on an ECE (exchange client extension) for outlook which
adds a couple of 16x16 buttons to the outlook toolbar. i'm using VC++
and MAPI.
these buttons have a 16 colour bitmap displayed. the purple color
RGB(255,0,255) in the bitmaps is the transparent color when outlook
runs.

i want to change the button bitmaps to be 256 color (8bpp). when i do
this i
cannot get transparency to work like it does with the 16 color bitmaps.

the purple shows up. is there any way i can get a color to be
transparent?

below is the code used to add the button to the toolbar. i am using
outlook XP, but have the same thing happen with outlook 2003.

TBADDBITMAP tbab;
tbab.hInst = AfxGetInstanceHandle();
tbab.nID = uiBitmapID;

*puiToolBarM = SendMessage(hwndToolbar, TB_ADDBITMAP, 1,
(LPARAM)&tbab);


1) one solution might be to make use of the OOM (outlook object model)
to place and paint toolbar buttons. but i'd rather prefer not to add
OOM code to my ECE.

2) i found some advice to use TB_SETIMAGELIST instead of TB_ADDBITMAP.
but i couldn't get it work from within the ECE's InstallCommands via
SendMessage.

any help greatly appreciated.

kind regards, gustafson


some more keywords: ImageList_AddMasked TB_ADDBITMAP TB_ADDBUTTONS
TB_SETIMAGELIST toolbar loadbitmap loadimage ImageList_Create
ImageList_Add IExchExt LR_CREATEDIBSECTION COLORREF IExchExtCommands
LPEXCHEXTCALLBACK EETBID_STANDARD button icon *.bmp resource png

 

[Tom at GSD]

Hi gustafson,

I created the following function below that seems to work really well for
creating a mask. Then call the following few of lines of code using the mask
function.

PICTDESC pdBmpMask;
pdBmpMask.cbSizeofstruct = sizeof(PICTDESC);
pdBmpMask.picType = PICTYPE_BITMAP;
pdBmpMask.bmp.hpal = 0;


pdBmp.bmp.hbitmap = ::LoadBitmap(
_AtlBaseModule.GetResourceInstance(),
MAKEINTRESOURCE(IDB_IMAGE));

// Create the mask using white
pdBmpMask.bmp.hbitmap = CreateBitmapMask(pdBmp.bmp.hbitmap, RGB(255,255,255));

IPictureDispPtr pPicMask;
::OleCreatePictureIndirect(&pdBmpMask, IID_IPictureDisp, TRUE, (LPVOID*)
&pPicMask);
spButton->PutMask(pPicMask);



HBITMAP CNewMessage::CreateBitmapMask(HBITMAP hbmColorImage, COLORREF
crTransparent)
{
HDC hdcMem, hdcMem2;
HBITMAP hbmMask;
BITMAP bm;

// Create monochrome (1 bit) mask bitmap.

GetObject(hbmColorImage, sizeof(BITMAP), &bm);
hbmMask = CreateBitmap(bm.bmWidth, bm.bmHeight, 1, 1, NULL);

// Get some HDCs that are compatible with the display driver
hdcMem = CreateCompatibleDC(0);
hdcMem2 = CreateCompatibleDC(0);

::SelectObject(hdcMem, hbmColorImage);
::SelectObject(hdcMem2, hbmMask);

// Set the background color of the color image to the color
// you want to be transparent.
SetBkColor(hdcMem, crTransparent);

BitBlt(hdcMem2, 0, 0, bm.bmWidth, bm.bmHeight, hdcMem, 0, 0, SRCCOPY);
BitBlt(hdcMem, 0, 0, bm.bmWidth, bm.bmHeight, hdcMem2, 0, 0, SRCINVERT);

// Clean up.
DeleteDC(hdcMem);
DeleteDC(hdcMem2);

return hbmMask;
}



Tom -

 

[Guest]

hi tom,

thank you very much for your answer.
unfortunately your code uses the OOM. and as i wrote in my initial
posting: i'd rather not add OOM code to my ECE.

so, still hoping for a solution ...

kind regards, gustafson

 

[Dmitry Streblechenko]

I don't think you will have much luck - everybody I know gave up on using
ECE to modify the icons.
Why don't you want to use OOM for that? You can still add buttons using the
ECE API, but you should be able to modify the icons using OOM from your ECE.

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

 

[footec]

I don't think you will have much luck - everybody I know gave up on using

ECE to modify the icons.
Why don't you want to use OOM for that? You can still add buttons using the
ECE API, but you should be able to modify the icons using OOM from your ECE.

Out of interest, how would you go about modifying icons using the OOM,
that were added using the ECE API?

Many thanks,
Chris

 

[Dmitry Streblechenko]

You can access any button (even if it was added by an ECE) using
Explorer/Inspector.CommandBars collection. It does not matter what created
the buttons.
But why not use OOM to begin with?

Dmitry Streblechenko (MVP)
http://www.dimastr.com/
OutlookSpy - Outlook, CDO
and MAPI Developer Tool

 

[Nishant Mehta]

Does this help?

HRESULT SetImageOnButton(Office::_CommandBarButtonPtr pButton, int
iBitmapResID)
{
pButton->PutStyle(Office::msoButtonIconAndCaption);
HBITMAP hBmp =(HBITMAP)::LoadImage( AfxGetApp()->m_hInstance,
MAKEINTRESOURCE(iBitmapResID),
IMAGE_BITMAP,
0,
0,
LR_LOADTRANSPARENT | LR_LOADMAP3DCOLORS | LR_SHARED);

PICTDESC PictDesc;
PictDesc.picType = PICTYPE_BITMAP;
PictDesc.bmp.hbitmap = hBmp;
PictDesc.bmp.hpal = NULL;
PictDesc.cbSizeofstruct = sizeof(PictDesc);

CComPtr<IPictureDisp> pDisp;
HRESULT hRes = OleCreatePictureIndirect(&PictDesc, __uuidof(pDisp),
TRUE, (void**)&pDisp)
;
if(SUCCEEDED(hRes))
{
VARIANT p1;
p1.vt = VT_DISPATCH;
p1.pdispVal = pDisp;

hRes = PutProperty(pButton, L"Picture", &p1);
}
return hRes;
}

//This is some MSDN Code
STDMETHODIMP PutProperty(LPDISPATCH pDisp, LPOLESTR pszName, VARIANT*
pvValue)
{
if (NULL == pDisp) return E_POINTER;
if (NULL == pvValue) return E_POINTER;

DISPID dwDispID;
DISPID dispidPut = DISPID_PROPERTYPUT;
DISPPARAMS dispparams = {NULL, NULL, 1, 1};
dispparams.rgvarg = pvValue;
dispparams.rgdispidNamedArgs = &dispidPut;

HRESULT hr = pDisp->GetIDsOfNames(IID_NULL, &pszName, 1,
LOCALE_USER_DEFAULT, &dwDispID);

if(SUCCEEDED(hr)) {

if (pvValue->vt == VT_UNKNOWN || pvValue->vt == VT_DISPATCH ||
(pvValue->vt & VT_ARRAY) || (pvValue->vt & VT_BYREF))
{
hr = pDisp->Invoke(dwDispID, IID_NULL, LOCALE_USER_DEFAULT,
DISPATCH_METHOD | DISPATCH_PROPERTYPUT, &dispparams,
NULL, NULL, NULL);
if (SUCCEEDED(hr)) return hr;
}



hr = pDisp->Invoke(dwDispID, IID_NULL, LOCALE_USER_DEFAULT,
DISPATCH_METHOD | DISPATCH_PROPERTYPUTREF, &dispparams,
NULL, NULL, NULL);
}

return hr;
}


Nishant Mehta

 

[Nishant Mehta]

Sorry I forgot to mention, I am very new to Development for outlook and
use a lot of help available on the groups so am sure most of my code
takes "inspiration" from someone else's posts. Hope my post helps
anyway.

Nishant

 

[Nishant Mehta]

Sorry again ! First bit of the bitmap is considered as the transparent
color.

Nishant