How to use custom icons for toolbars in winapi programming

问题

I'm trying to use my own custom images for creating a toolbar in a win32 winapi program. This is what I have ( in my WM_CREATE case ):

#define IDT_MAIN_TOOL     101
TBBUTTON tbb[ 1 ];
TBADDBITMAP tbab;

HWND hToolbar = CreateWindowEx( 0, TOOLBARCLASSNAME, NULL, WS_CHILD | WS_VISIBLE | TBSTYLE_FLAT, 0, 0, 0, 0, hwnd, ( HMENU )IDT_MAIN_TOL, NULL, NULL );

SendMessage( hToolbar, TB_BUTTONSTRUCTSIZE, ( WPARAM )sizeof( TBBUTTON ), 0 );

tbab.hInst = HINST_COMMCTRL;
tbab.nID = IDB_HIST_LARGE_COLOR;
SendMessage( hToolbar, TB_ADDBITMAP, 0, ( LPARAM )&tbab );

ZeroMemory( tbb, sizeof( tbb ) );

tbb[ 0 ].iBitmap = HIST_BACK;
// I've also tried tbb[ 0 ].iBitmap = LoadIcon( NULL, "browse_back.ico" );
// However, iBitmap must be an integer and can't figure out how to use my 'browse_back.ico' image
tbb[ 0 ].fsState = TBSTATE_ENABLED;

SendMessage( hToolbar, TB_ADDBUTTONS, sizeof( tbb ) / sizeof( TBBUTTON ), ( LPARAM )&tbb );

I would like to use my own icon image: 'browse_back.ico' as the image for that toolbar button. How is this accomplished? Not sure if this is necessary but I'm using Microsoft Visual C++ 2010 Express.

回答1:

Read the documentation:

iBitmap Type: int

Zero-based index of the button image. Set this member to I_IMAGECALLBACK, and the toolbar will send the TBN_GETDISPINFO notification code to retrieve the image index when it is needed.

Version 5.81. Set this member to I_IMAGENONE to indicate that the button does not have an image. The button layout will not include any space for a bitmap, only text.

If the button is a separator, that is, if fsStyle is set to BTNS_SEP, iBitmap determines the width of the separator, in pixels. For information on selecting button images from image lists, see TB_SETIMAGELIST message.

So you need to create an image list using ImageList_Create(), add your ICO image to it using ImageList_Add() or ImageList_ReplaceIcon(), associate it with the toolbar using TB_SETIMAGELIST, and then you can set tbb[0].iBitmap to the ICO's index within the image list.

来源：https://stackoverflow.com/questions/21743082/how-to-use-custom-icons-for-toolbars-in-winapi-programming