Function MakeColorPickButton

src/Helpers.c:665–703

============================================================================= MakeColorPickButton()

//  MakeColorPickButton()
//
void MakeColorPickButton ( HWND hwnd, int nCtlId, HINSTANCE hInstance, COLORREF crColor )
{
    HWND hwndCtl = GetDlgItem ( hwnd, nCtlId );
    BUTTON_IMAGELIST bi;
    HIMAGELIST himlOld = NULL;
    HBITMAP hBmp;
    COLORMAP colormap[2];
    if ( SendMessage ( hwndCtl, BCM_GETIMAGELIST, 0, ( LPARAM ) &bi ) ) {
        himlOld = bi.himl;
    }
    if ( IsWindowEnabled ( hwndCtl ) && crColor != -1 ) {
        colormap[0].from = RGB ( 0x00, 0x00, 0x00 );
        colormap[0].to   = GetSysColor ( COLOR_3DSHADOW );
    } else {
        colormap[0].from = RGB ( 0x00, 0x00, 0x00 );
        colormap[0].to   = RGB ( 0xFF, 0xFF, 0xFF );
    }
    if ( IsWindowEnabled ( hwndCtl ) && crColor != -1 ) {
        if ( crColor == RGB ( 0xFF, 0xFF, 0xFF ) ) {
            crColor = RGB ( 0xFF, 0xFF, 0xFE );
        }
        colormap[1].from = RGB ( 0xFF, 0xFF, 0xFF );
        colormap[1].to   = crColor;
    } else {
        colormap[1].from = RGB ( 0xFF, 0xFF, 0xFF );
        colormap[1].to   = RGB ( 0xFF, 0xFF, 0xFF );
    }
    hBmp = CreateMappedBitmap ( hInstance, IDB_PICK, 0, colormap, 2 );
    bi.himl = ImageList_Create ( 10, 10, ILC_COLORDDB | ILC_MASK, 1, 0 );
    ImageList_AddMasked ( bi.himl, hBmp, RGB ( 0xFF, 0xFF, 0xFF ) );
    DeleteObject ( hBmp );
    SetRect ( &bi.margin, 0, 0, 4, 0 );
    bi.uAlign = BUTTON_IMAGELIST_ALIGN_RIGHT;
    SendMessage ( hwndCtl, BCM_SETIMAGELIST, 0, ( LPARAM ) &bi );
    InvalidateRect ( hwndCtl, NULL, TRUE );
    if ( himlOld ) {
        ImageList_Destroy ( himlOld );
    }
}


//=============================================================================