X-Git-Url: https://git.saurik.com/wxWidgets.git/blobdiff_plain/a2327a9f80fa3240ab652da8f95a66b5c25576de..a111f2b216a90bacb254644d3cae526eddc9f9f1:/src/msw/tbar95.cpp diff --git a/src/msw/tbar95.cpp b/src/msw/tbar95.cpp index e101ced821..3c1a1b6532 100644 --- a/src/msw/tbar95.cpp +++ b/src/msw/tbar95.cpp @@ -35,6 +35,7 @@ #include "wx/dynarray.h" #include "wx/settings.h" #include "wx/bitmap.h" + #include "wx/dcmemory.h" #endif #if wxUSE_TOOLBAR && defined(__WIN95__) && wxUSE_TOOLBAR_NATIVE @@ -49,10 +50,10 @@ #ifndef __TWIN32__ -#ifdef __GNUWIN32_OLD__ - #include "wx/msw/gnuwin32/extra.h" -#else +#if defined(__WIN95__) && !((defined(__GNUWIN32_OLD__) || defined(__TWIN32__)) && !defined(__CYGWIN10__)) #include +#else + #include "wx/msw/gnuwin32/extra.h" #endif #endif // __TWIN32__ @@ -60,6 +61,18 @@ #include "wx/msw/dib.h" #include "wx/app.h" // for GetComCtl32Version +// ---------------------------------------------------------------------------- +// conditional compilation +// ---------------------------------------------------------------------------- + +// wxWindows previously always considered that toolbar buttons have light grey +// (0xc0c0c0) background and so ignored any bitmap masks - however, this +// doesn't work with XPMs which then appear to have black background. To make +// this work, we must respect the bitmap masks - which we do now. This should +// be ok in any case, but to restore 100% compatible with the old version +// behaviour, you can set this to 0. +#define USE_BITMAP_MASKS 1 + // ---------------------------------------------------------------------------- // constants // ---------------------------------------------------------------------------- @@ -95,13 +108,14 @@ // private function prototypes // ---------------------------------------------------------------------------- -static void wxMapBitmap(HBITMAP hBitmap, int width, int height); +// adjust toolbar bitmap colours +// static void wxMapBitmap(HBITMAP hBitmap, int width, int height); // ---------------------------------------------------------------------------- // wxWin macros // ---------------------------------------------------------------------------- -IMPLEMENT_DYNAMIC_CLASS(wxToolBar, wxControl) +IMPLEMENT_DYNAMIC_CLASS(wxToolBar, wxToolBarBase) BEGIN_EVENT_TABLE(wxToolBar, wxToolBarBase) EVT_MOUSE_EVENTS(wxToolBar::OnMouseEvent) @@ -182,6 +196,8 @@ void wxToolBar::Init() m_defaultWidth = DEFAULTBITMAPX; m_defaultHeight = DEFAULTBITMAPY; + + m_pInTool = 0; } bool wxToolBar::Create(wxWindow *parent, @@ -200,6 +216,9 @@ bool wxToolBar::Create(wxWindow *parent, if (style & wxBORDER) msflags |= WS_BORDER; + if ( style & wxCLIP_SIBLINGS ) + msflags |= WS_CLIPSIBLINGS; + #ifdef TBSTYLE_TOOLTIPS msflags |= TBSTYLE_TOOLTIPS; #endif @@ -245,7 +264,15 @@ bool wxToolBar::Create(wxWindow *parent, wxToolBar::~wxToolBar() { - if (m_hBitmap) + // we must refresh the frame size when the toolbar is deleted but the frame + // is not - otherwise toolbar leaves a hole in the place it used to occupy + wxFrame *frame = wxDynamicCast(GetParent(), wxFrame); + if ( frame && !frame->IsBeingDeleted() ) + { + frame->SendSizeEvent(); + } + + if ( m_hBitmap ) { ::DeleteObject((HBITMAP) m_hBitmap); } @@ -267,8 +294,32 @@ bool wxToolBar::DoInsertTool(size_t WXUNUSED(pos), bool wxToolBar::DoDeleteTool(size_t pos, wxToolBarToolBase *tool) { - // normally, we only delete one button, but we use several separators to - // cover the space used by one control sometimes (with old comctl32.dll) + // the main difficulty we have here is with the controls in the toolbars: + // as we (sometimes) use several separators to cover up the space used by + // them, the indices are not the same for us and the toolbar + + // first determine the position of the first button to delete: it may be + // different from pos if we use several separators to cover the space used + // by a control + wxToolBarToolsList::Node *node; + for ( node = m_tools.GetFirst(); node; node = node->GetNext() ) + { + wxToolBarToolBase *tool2 = node->GetData(); + if ( tool2 == tool ) + { + // let node point to the next node in the list + node = node->GetNext(); + + break; + } + + if ( tool2->IsControl() ) + { + pos += ((wxToolBarTool *)tool2)->GetSeparatorsCount() - 1; + } + } + + // now determine the number of buttons to delete and the area taken by them size_t nButtonsToDelete = 1; // get the size of the button we're going to delete @@ -287,11 +338,13 @@ bool wxToolBar::DoDeleteTool(size_t pos, wxToolBarToolBase *tool) width *= nButtonsToDelete; } + // do delete all buttons + m_nButtons -= nButtonsToDelete; while ( nButtonsToDelete-- > 0 ) { if ( !::SendMessage(GetHwnd(), TB_DELETEBUTTON, pos, 0) ) { - wxLogLastError("TB_DELETEBUTTON"); + wxLogLastError(wxT("TB_DELETEBUTTON")); return FALSE; } @@ -299,11 +352,9 @@ bool wxToolBar::DoDeleteTool(size_t pos, wxToolBarToolBase *tool) tool->Detach(); - m_nButtons -= nButtonsToDelete; - - // reposition all the controls after this button - wxToolBarToolsList::Node *node = m_tools.Item(pos); - for ( node = node->GetNext(); node; node = node->GetNext() ) + // and finally reposition all the controls after this button (the toolbar + // takes care of all normal items) + for ( /* node -> first after deleted */ ; node; node = node->GetNext() ) { wxToolBarToolBase *tool2 = node->GetData(); if ( tool2->IsControl() ) @@ -339,7 +390,17 @@ bool wxToolBar::Realize() int totalBitmapWidth = (int)(m_defaultWidth * nTools); int totalBitmapHeight = (int)m_defaultHeight; - // Create a bitmap for all the tool bitmaps + // Create a bitmap and copy all the tool bitmaps to it +#if USE_BITMAP_MASKS + wxMemoryDC dcAllButtons; + wxBitmap bitmap(totalBitmapWidth, totalBitmapHeight); + dcAllButtons.SelectObject(bitmap); + dcAllButtons.SetBackground(*wxLIGHT_GREY_BRUSH); + dcAllButtons.Clear(); + + m_hBitmap = bitmap.GetHBITMAP(); + HBITMAP hBitmap = (HBITMAP)m_hBitmap; +#else // !USE_BITMAP_MASKS HBITMAP hBitmap = ::CreateCompatibleBitmap(ScreenHDC(), totalBitmapWidth, totalBitmapHeight); @@ -352,11 +413,11 @@ bool wxToolBar::Realize() m_hBitmap = (WXHBITMAP)hBitmap; - // Now blit all the tools onto this bitmap HDC memoryDC = ::CreateCompatibleDC(NULL); HBITMAP oldBitmap = (HBITMAP) ::SelectObject(memoryDC, hBitmap); HDC memoryDC2 = ::CreateCompatibleDC(NULL); +#endif // USE_BITMAP_MASKS/!USE_BITMAP_MASKS // the button position wxCoord x = 0; @@ -370,17 +431,23 @@ bool wxToolBar::Realize() wxToolBarToolBase *tool = node->GetData(); if ( tool->IsButton() ) { - HBITMAP hbmp = GetHbitmapOf(tool->GetBitmap1()); - if ( hbmp ) + const wxBitmap& bmp = tool->GetBitmap1(); + if ( bmp.Ok() ) { +#if USE_BITMAP_MASKS + // notice the last parameter: do use mask + dcAllButtons.DrawBitmap(tool->GetBitmap1(), x, 0, TRUE); +#else // !USE_BITMAP_MASKS + HBITMAP hbmp = GetHbitmapOf(bmp); HBITMAP oldBitmap2 = (HBITMAP)::SelectObject(memoryDC2, hbmp); if ( !BitBlt(memoryDC, x, 0, m_defaultWidth, m_defaultHeight, memoryDC2, 0, 0, SRCCOPY) ) { - wxLogLastError("BitBlt"); + wxLogLastError(wxT("BitBlt")); } ::SelectObject(memoryDC2, oldBitmap2); +#endif // USE_BITMAP_MASKS/!USE_BITMAP_MASKS } else { @@ -397,12 +464,19 @@ bool wxToolBar::Realize() node = node->GetNext(); } +#if USE_BITMAP_MASKS + dcAllButtons.SelectObject(wxNullBitmap); + + // don't delete this HBITMAP! + bitmap.SetHBITMAP(0); +#else // !USE_BITMAP_MASKS ::SelectObject(memoryDC, oldBitmap); ::DeleteDC(memoryDC); ::DeleteDC(memoryDC2); +#endif // USE_BITMAP_MASKS/!USE_BITMAP_MASKS // Map to system colours - wxMapBitmap(hBitmap, totalBitmapWidth, totalBitmapHeight); + MapBitmap((WXHBITMAP) hBitmap, totalBitmapWidth, totalBitmapHeight); int bitmapId = 0; @@ -446,7 +520,7 @@ bool wxToolBar::Realize() { if ( !::SendMessage(GetHwnd(), TB_DELETEBUTTON, 0, 0) ) { - wxLogLastError("TB_DELETEBUTTON"); + wxLogDebug(wxT("TB_DELETEBUTTON failed")); } } @@ -518,7 +592,7 @@ bool wxToolBar::Realize() if ( !::SendMessage(GetHwnd(), TB_ADDBUTTONS, (WPARAM)i, (LPARAM)buttons) ) { - wxLogLastError("TB_ADDBUTTONS"); + wxLogLastError(wxT("TB_ADDBUTTONS")); } delete [] buttons; @@ -547,7 +621,7 @@ bool wxToolBar::Realize() if ( !SendMessage(GetHwnd(), TB_GETITEMRECT, index, (LPARAM)(LPRECT)&r) ) { - wxLogLastError("TB_GETITEMRECT"); + wxLogLastError(wxT("TB_GETITEMRECT")); } // TB_SETBUTTONINFO message is only supported by comctl32.dll 4.71+ @@ -566,7 +640,7 @@ bool wxToolBar::Realize() tool->GetId(), (LPARAM)&tbbi) ) { // the id is probably invalid? - wxLogLastError("TB_SETBUTTONINFO"); + wxLogLastError(wxT("TB_SETBUTTONINFO")); } } else @@ -580,7 +654,7 @@ bool wxToolBar::Realize() TBBUTTON tbb; wxZeroMemory(tbb); tbb.idCommand = 0; - tbb.fsState = TBSTATE_ENABLED | TBSTATE_HIDDEN; + tbb.fsState = TBSTATE_ENABLED; tbb.fsStyle = TBSTYLE_SEP; size_t nSeparators = size.x / widthSep; @@ -589,7 +663,7 @@ bool wxToolBar::Realize() if ( !SendMessage(GetHwnd(), TB_INSERTBUTTON, index, (LPARAM)&tbb) ) { - wxLogLastError("TB_INSERTBUTTON"); + wxLogLastError(wxT("TB_INSERTBUTTON")); } index++; @@ -645,7 +719,7 @@ bool wxToolBar::Realize() // message handlers // ---------------------------------------------------------------------------- -bool wxToolBar::MSWCommand(WXUINT cmd, WXWORD id) +bool wxToolBar::MSWCommand(WXUINT WXUNUSED(cmd), WXWORD id) { wxToolBarToolBase *tool = FindById((int)id); if ( !tool ) @@ -675,7 +749,7 @@ bool wxToolBar::MSWCommand(WXUINT cmd, WXWORD id) bool wxToolBar::MSWOnNotify(int WXUNUSED(idCtrl), WXLPARAM lParam, - WXLPARAM *result) + WXLPARAM *WXUNUSED(result)) { // First check if this applies to us NMHDR *hdr = (NMHDR *)lParam; @@ -705,11 +779,17 @@ bool wxToolBar::MSWOnNotify(int WXUNUSED(idCtrl), { ttText->lpszText = (wxChar *)help.c_str(); } -#if (_WIN32_IE >= 0x0300) else { - // FIXME this is a temp hack only until I understand better what - // must be done in both ANSI and Unicode builds +#if wxUSE_UNICODE + ttText->lpszText = (wxChar *)help.c_str(); +#else + // VZ: I don't know why it happens, but the versions of + // comctl32.dll starting from 4.70 sometimes send TTN_NEEDTEXTW + // even to ANSI programs (normally, this message is supposed + // to be sent to Unicode programs only) - hence we need to + // handle it as well, otherwise no tooltips will be shown in + // this case size_t lenAnsi = help.Len(); #ifdef __MWERKS__ @@ -730,13 +810,10 @@ bool wxToolBar::MSWOnNotify(int WXUNUSED(idCtrl), dst[lenUnicode] = 0; delete [] pwz; +#endif } -#endif // _WIN32_IE >= 0x0300 } - // For backward compatibility... - OnMouseEnter(tool->GetId()); - return TRUE; } @@ -775,7 +852,8 @@ void wxToolBar::SetRows(int nRows) wxSize wxToolBar::GetToolSize() const { // TB_GETBUTTONSIZE is supported from version 4.70 -#if defined(_WIN32_IE) && (_WIN32_IE >= 0x300 ) +#if defined(_WIN32_IE) && (_WIN32_IE >= 0x300 ) \ + && !( defined(__GNUWIN32__) && !wxCHECK_W32API_VERSION( 1, 0 ) ) if ( wxTheApp->GetComCtl32Version() >= 470 ) { DWORD dw = ::SendMessage(GetHwnd(), TB_GETBUTTONSIZE, 0, 0); @@ -790,19 +868,54 @@ wxSize wxToolBar::GetToolSize() const } } +static +wxToolBarToolBase *GetItemSkippingDummySpacers(const wxToolBarToolsList& tools, + size_t index ) +{ + wxToolBarToolsList::Node* current = tools.GetFirst(); + + for ( ; current != 0; current = current->GetNext() ) + { + if ( index == 0 ) + return current->GetData(); + + wxToolBarTool *tool = (wxToolBarTool *)current->GetData(); + size_t separators = tool->GetSeparatorsCount(); + + // if it is a normal button, sepcount == 0, so skip 1 item (the button) + // otherwise, skip as many items as the separator count, plus the + // control itself + index -= separators ? separators + 1 : 1; + } + + return 0; +} + wxToolBarToolBase *wxToolBar::FindToolForPosition(wxCoord x, wxCoord y) const { POINT pt; pt.x = x; pt.y = y; int index = (int)::SendMessage(GetHwnd(), TB_HITTEST, 0, (LPARAM)&pt); - if ( index < 0 ) + // MBN: when the point ( x, y ) is close to the toolbar border + // TB_HITTEST returns m_nButtons ( not -1 ) + if ( index < 0 || (size_t)index >= m_nButtons ) { // it's a separator or there is no tool at all there return (wxToolBarToolBase *)NULL; } - return m_tools.Item((size_t)index)->GetData(); + // if comctl32 version < 4.71 wxToolBar95 adds dummy spacers +#if defined(_WIN32_IE) && (_WIN32_IE >= 0x400 ) + if ( wxTheApp->GetComCtl32Version() >= 471 ) + { + return m_tools.Item((size_t)index)->GetData(); + } + else +#endif + { + return GetItemSkippingDummySpacers( m_tools, (size_t) index ); + } } void wxToolBar::UpdateSize() @@ -814,15 +927,7 @@ void wxToolBar::UpdateSize() wxFrame *frame = wxDynamicCast(GetParent(), wxFrame); if ( frame ) { - // don't change the size, we just need to generate a WM_SIZE - RECT r; - if ( !GetWindowRect(GetHwndOf(frame), &r) ) - { - wxLogLastError(_T("GetWindowRect")); - } - - (void)::SendMessage(GetHwndOf(frame), WM_SIZE, SIZE_RESTORED, - MAKELPARAM(r.right - r.left, r.bottom - r.top)); + frame->SendSizeEvent(); } } @@ -842,7 +947,7 @@ void wxToolBar::DoToggleTool(wxToolBarToolBase *tool, bool toggle) (WPARAM)tool->GetId(), (LPARAM)MAKELONG(toggle, 0)); } -void wxToolBar::DoSetToggle(wxToolBarToolBase *tool, bool toggle) +void wxToolBar::DoSetToggle(wxToolBarToolBase *WXUNUSED(tool), bool WXUNUSED(toggle)) { // VZ: AFAIK, the button has to be created either with TBSTYLE_CHECK or // without, so we really need to delete the button and recreate it here @@ -856,16 +961,20 @@ void wxToolBar::DoSetToggle(wxToolBarToolBase *tool, bool toggle) // Responds to colour changes, and passes event on to children. void wxToolBar::OnSysColourChanged(wxSysColourChangedEvent& event) { - m_backgroundColour = wxColour(GetRValue(GetSysColor(COLOR_BTNFACE)), - GetGValue(GetSysColor(COLOR_BTNFACE)), GetBValue(GetSysColor(COLOR_BTNFACE))); + wxRGBToColour(m_backgroundColour, ::GetSysColor(COLOR_BTNFACE)); // Remap the buttons Realize(); + // Relayout the toolbar + int nrows = m_maxRows; + m_maxRows = 0; // otherwise SetRows() wouldn't do anything + SetRows(nrows); + Refresh(); - // Propagate the event to the non-top-level children - wxWindow::OnSysColourChanged(event); + // let the event propagate further + event.Skip(); } void wxToolBar::OnMouseEvent(wxMouseEvent& event) @@ -924,6 +1033,28 @@ long wxToolBar::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) return 0; } } + else if ( nMsg == WM_MOUSEMOVE ) + { + wxCoord x = GET_X_LPARAM(lParam), y = GET_Y_LPARAM(lParam); + wxToolBarToolBase* tool = FindToolForPosition( x, y ); + + // cursor left current tool + if( tool != m_pInTool && !tool ) + { + m_pInTool = 0; + OnMouseEnter( -1 ); + } + + // cursor entered a tool + if( tool != m_pInTool && tool ) + { + m_pInTool = tool; + OnMouseEnter( tool->GetId() ); + } + + // we don't handle mouse moves, so fall through + // to wxControl::MSWWindowProc + } return wxControl::MSWWindowProc(nMsg, wParam, lParam); } @@ -932,102 +1063,122 @@ long wxToolBar::MSWWindowProc(WXUINT nMsg, WXWPARAM wParam, WXLPARAM lParam) // private functions // ---------------------------------------------------------------------------- -// These are the default colors used to map the bitmap colors to the current -// system colors. Note that they are in BGR format because this is what Windows -// wants (and not RGB) +bool wxToolBar::sm_coloursInit = FALSE; +long wxToolBar::sm_stdColours[6]; -#define BGR_BUTTONTEXT (RGB(000,000,000)) // black -#define BGR_BUTTONSHADOW (RGB(128,128,128)) // dark grey -#define BGR_BUTTONFACE (RGB(192,192,192)) // bright grey -#define BGR_BUTTONHILIGHT (RGB(255,255,255)) // white -#define BGR_BACKGROUNDSEL (RGB(000,000,255)) // blue -#define BGR_BACKGROUND (RGB(255,000,255)) // magenta - -void wxMapBitmap(HBITMAP hBitmap, int width, int height) +void wxToolBar::MapBitmap(WXHBITMAP bitmap, int width, int height) { - COLORMAP ColorMap[] = - { - {BGR_BUTTONTEXT, COLOR_BTNTEXT}, // black - {BGR_BUTTONSHADOW, COLOR_BTNSHADOW}, // dark grey - {BGR_BUTTONFACE, COLOR_BTNFACE}, // bright grey - {BGR_BUTTONHILIGHT, COLOR_BTNHIGHLIGHT},// white -/* {BGR_BACKGROUNDSEL, COLOR_HIGHLIGHT}, // blue */ - {BGR_BACKGROUND, COLOR_WINDOW} // magenta - }; - - int NUM_MAPS = (sizeof(ColorMap)/sizeof(COLORMAP)); - int n; - for ( n = 0; n < NUM_MAPS; n++) - { - ColorMap[n].to = ::GetSysColor(ColorMap[n].to); - } - - HBITMAP hbmOld; - HDC hdcMem = CreateCompatibleDC(NULL); - - if (hdcMem) - { - hbmOld = (HBITMAP) SelectObject(hdcMem, hBitmap); - - int i, j, k; - for ( i = 0; i < width; i++) + if (!sm_coloursInit) { - for ( j = 0; j < height; j++) + // When a bitmap is loaded, the RGB values can change. So we need to have a + // reference bitmap which can tell us what the RGB values change to. + wxBitmap stdColourBitmap("wxBITMAP_STD_COLOURS", wxBITMAP_TYPE_RESOURCE); + if (stdColourBitmap.Ok()) { - COLORREF pixel = ::GetPixel(hdcMem, i, j); -/* - BYTE red = GetRValue(pixel); - BYTE green = GetGValue(pixel); - BYTE blue = GetBValue(pixel); -*/ - - for ( k = 0; k < NUM_MAPS; k ++) + wxMemoryDC memDC; + memDC.SelectObject(stdColourBitmap); + + int i = 0; + wxColour colour; + for (i = 0; i < 6; i++) { - if ( ColorMap[k].from == pixel ) - { - /* COLORREF actualPixel = */ ::SetPixel(hdcMem, i, j, ColorMap[k].to); - break; - } + memDC.GetPixel(i, 0, & colour); + sm_stdColours[i] = RGB(colour.Red(), colour.Green(), colour.Blue()); } + sm_coloursInit = TRUE; + memDC.SelectObject(wxNullBitmap); + } + else + { + sm_stdColours[0] = RGB(000,000,000) ; + sm_stdColours[1] = RGB(128,128,128) ; + sm_stdColours[2] = RGB(192,192,192) ; + sm_stdColours[3] = RGB(255,255,255) ; + sm_stdColours[4] = RGB(000,000,255) ; + sm_stdColours[5] = RGB(255,000,255) ; + sm_coloursInit = TRUE; } } + HBITMAP hBitmap = (HBITMAP) bitmap; + + COLORMAP ColorMap[5]; + + ColorMap[0].from = sm_stdColours[0]; ColorMap[0].to = COLOR_BTNTEXT; // black (0, 0 0) + ColorMap[1].from = sm_stdColours[1]; ColorMap[1].to = COLOR_BTNSHADOW; // dark grey (128, 128, 128) + ColorMap[2].from = sm_stdColours[2]; ColorMap[2].to = COLOR_BTNFACE; // bright grey (192, 192, 192) + ColorMap[3].from = sm_stdColours[3]; ColorMap[3].to = COLOR_BTNHIGHLIGHT; // white (255, 255, 255) + // ColorMap[4].from = sm_stdColours[4]; ColorMap[4].to = COLOR_HIGHLIGHT; // blue (0, 0, 255) + ColorMap[4].from = sm_stdColours[5]; ColorMap[4].to = COLOR_WINDOW; // magenta (255, 0, 255) + + for ( size_t n = 0; n < WXSIZEOF(ColorMap); n++) + { + ColorMap[n].to = ::GetSysColor(ColorMap[n].to); + } + + HBITMAP hbmOld; + HDC hdcMem = CreateCompatibleDC(NULL); + + if (hdcMem) + { + hbmOld = (HBITMAP) SelectObject(hdcMem, hBitmap); + + for ( int i = 0; i < width; i++ ) + { + for ( int j = 0; j < height; j++ ) + { + COLORREF pixel = ::GetPixel(hdcMem, i, j); + + for ( size_t k = 0; k < WXSIZEOF(ColorMap); k++ ) + { + int distance = abs( GetRValue( pixel ) - GetRValue( ColorMap[k].from )) ; + distance = max( distance , abs(GetGValue(pixel ) - GetGValue( ColorMap[k].from ))) ; + distance = max( distance , abs(GetBValue(pixel ) - GetBValue( ColorMap[k].from ))) ; + if ( distance < 0x10 ) + { + ::SetPixel(hdcMem, i, j, ColorMap[k].to); + break; + } + } + } + } - SelectObject(hdcMem, hbmOld); - DeleteObject(hdcMem); - } + SelectObject(hdcMem, hbmOld); + DeleteObject(hdcMem); + } } // Some experiments... #if 0 - // What we want to do is create another bitmap which has a depth of 4, - // and set the bits. So probably we want to convert this HBITMAP into a - // DIB, then call SetDIBits. - // AAAGH. The stupid thing is that if newBitmap has a depth of 4 (less than that of - // the screen), then SetDIBits fails. - HBITMAP newBitmap = ::CreateBitmap(totalBitmapWidth, totalBitmapHeight, 1, 4, NULL); - HANDLE newDIB = ::BitmapToDIB((HBITMAP) m_hBitmap, NULL); - LPBITMAPINFOHEADER lpbmi = (LPBITMAPINFOHEADER) GlobalLock(newDIB); - - dc = ::GetDC(NULL); +// What we want to do is create another bitmap which has a depth of 4, +// and set the bits. So probably we want to convert this HBITMAP into a +// DIB, then call SetDIBits. +// AAAGH. The stupid thing is that if newBitmap has a depth of 4 (less than that of +// the screen), then SetDIBits fails. +HBITMAP newBitmap = ::CreateBitmap(totalBitmapWidth, totalBitmapHeight, 1, 4, NULL); +HANDLE newDIB = ::BitmapToDIB((HBITMAP) m_hBitmap, NULL); +LPBITMAPINFOHEADER lpbmi = (LPBITMAPINFOHEADER) GlobalLock(newDIB); + +dc = ::GetDC(NULL); // LPBITMAPINFOHEADER lpbmi = (LPBITMAPINFOHEADER) newDIB; - int result = ::SetDIBits(dc, newBitmap, 0, lpbmi->biHeight, FindDIBBits((LPSTR)lpbmi), (LPBITMAPINFO)lpbmi, - DIB_PAL_COLORS); - DWORD err = GetLastError(); +int result = ::SetDIBits(dc, newBitmap, 0, lpbmi->biHeight, FindDIBBits((LPSTR)lpbmi), (LPBITMAPINFO)lpbmi, + DIB_PAL_COLORS); +DWORD err = GetLastError(); - ::ReleaseDC(NULL, dc); +::ReleaseDC(NULL, dc); - // Delete the DIB - GlobalUnlock (newDIB); - GlobalFree (newDIB); +// Delete the DIB +GlobalUnlock (newDIB); +GlobalFree (newDIB); // WXHBITMAP hBitmap2 = wxCreateMappedBitmap((WXHINSTANCE) wxGetInstance(), (WXHBITMAP) m_hBitmap); - // Substitute our new bitmap for the old one - ::DeleteObject((HBITMAP) m_hBitmap); - m_hBitmap = (WXHBITMAP) newBitmap; +// Substitute our new bitmap for the old one +::DeleteObject((HBITMAP) m_hBitmap); +m_hBitmap = (WXHBITMAP) newBitmap; #endif #endif // wxUSE_TOOLBAR && Win95 +