I've managed to write a allegro program under wxwidgets for windows. My program is just load a bmp file and display on a wxWindow by Allegro. Unfortunately there are some functions does not work such as blit,install_keyboard etc. Here is part of my code: ( for complete source code, please refer to the attachment.)
| 1 | //---------------------- |
| 2 | // main.cpp |
| 3 | //---------------------- |
| 4 | #include "main.h" |
| 5 | #include "wxallegwin.h" |
| 6 | #include "ResourceMgr.h" |
| 7 | |
| 8 | int idMenuQuit = wxNewId(); |
| 9 | int idMenuAbout = wxNewId(); |
| 10 | |
| 11 | BEGIN_EVENT_TABLE(MyFrame, wxFrame) |
| 12 | EVT_MENU(idMenuQuit, MyFrame::OnQuit) |
| 13 | EVT_MENU(idMenuAbout, MyFrame::OnAbout) |
| 14 | EVT_PAINT(MyFrame::OnPaint) |
| 15 | END_EVENT_TABLE() |
| 16 | |
| 17 | MyFrame::MyFrame(wxFrame *frame, const wxString& title) |
| 18 | : wxFrame(frame, -1, title),m_pResMgr(NULL) |
| 19 | { |
| 20 | wxMenuBar* mbar = new wxMenuBar(); |
| 21 | wxMenu* fileMenu = new wxMenu(_("")); |
| 22 | fileMenu->Append(idMenuQuit, _("&Quit\tAlt-F4"), _("Quit the application")); |
| 23 | mbar->Append(fileMenu, _("&File")); |
| 24 | |
| 25 | wxMenu* helpMenu = new wxMenu(_("")); |
| 26 | helpMenu->Append(idMenuAbout, _("&About\tF1"), _("Show info about this application")); |
| 27 | mbar->Append(helpMenu, _("&Help")); |
| 28 | |
| 29 | SetMenuBar(mbar); |
| 30 | |
| 31 | CreateToolBar(wxTB_HORIZONTAL,-1); |
| 32 | SetClientSize(640,480); |
| 33 | m_pMyWin = new wxAllegWin(this,-1,wxPoint(0,0),GetSize(),0,"Allegro Win"); |
| 34 | m_pMyWin->Install(); |
| 35 | wxBoxSizer* bs = new wxBoxSizer(wxVERTICAL); |
| 36 | bs->Add(m_pMyWin,1,wxTOP|wxLEFT|wxBOTTOM|wxRIGHT|wxALIGN_CENTER|wxEXPAND|wxFIXED_MINSIZE,1); |
| 37 | SetSizer(bs); |
| 38 | SetAutoLayout(true); |
| 39 | Layout(); |
| 40 | |
| 41 | } |
| 42 | |
| 43 | MyFrame::~MyFrame() |
| 44 | { |
| 45 | m_pMyWin->Uninstall(); |
| 46 | delete m_pMyWin; |
| 47 | } |
| 48 | |
| 49 | void MyFrame::OnQuit(wxCommandEvent& event) |
| 50 | { |
| 51 | Close(); |
| 52 | } |
| 53 | |
| 54 | void MyFrame::OnAbout(wxCommandEvent& event) |
| 55 | { |
| 56 | } |
| 57 | |
| 58 | void MyFrame::OnPaint(wxPaintEvent& event) |
| 59 | { |
| 60 | m_pMyWin->Rendering(); |
| 61 | event.Skip(); |
| 62 | } |
| 63 | |
| 64 | // ------------------------------------ |
| 65 | // wxAllegWin.cpp |
| 66 | // ------------------------------------ |
| 67 | #include "wxallegwin.h" |
| 68 | #include "ResourceMgr.h" |
| 69 | |
| 70 | wxAllegWin::wxAllegWin(wxWindow* parent, wxWindowID id, |
| 71 | const wxPoint& pos,const wxSize& size,long style, |
| 72 | const wxString& name) |
| 73 | : wxWindow(parent,id,pos,size,style,name), |
| 74 | m_pFrameBuf(NULL), |
| 75 | m_bInstalled(false) |
| 76 | { |
| 77 | } |
| 78 | |
| 79 | wxAllegWin::~wxAllegWin() |
| 80 | { |
| 81 | } |
| 82 | |
| 83 | bool wxAllegWin::Install() |
| 84 | { |
| 85 | if ( m_bInstalled ) |
| 86 | return false; |
| 87 | |
| 88 | int w,h; |
| 89 | GetClientSize(&w,&h); |
| 90 | |
| 91 | /* the DirectX windowed driver requires the width to be a multiple of 4 */ |
| 92 | w &= ~3; |
| 93 | |
| 94 | #ifdef __GNUWIN32__ |
| 95 | win_set_window((HWND)GetHandle()); |
| 96 | #endif |
| 97 | |
| 98 | /* initialize the library */ |
| 99 | if (allegro_init() != 0) |
| 100 | { |
| 101 | // throw exception |
| 102 | } |
| 103 | |
| 104 | install_timer(); |
| 105 | // Question: install_keyboard doesn't work |
| 106 | // install_keyboard(); |
| 107 | install_sound(DIGI_AUTODETECT, MIDI_NONE, NULL); |
| 108 | |
| 109 | set_color_depth(desktop_color_depth()); |
| 110 | |
| 111 | /* install the DirectX windowed driver */ |
| 112 | if (set_gfx_mode(GFX_DIRECTX_WIN, w, h, 0, 0) != 0) |
| 113 | { |
| 114 | wxMessageBox( "Unable the set the graphics mode.", "Error!", |
| 115 | wxOK | wxICON_INFORMATION ); |
| 116 | } |
| 117 | |
| 118 | // create a bitmap buffer |
| 119 | // m_pFrameBuf=create_bitmap(m_iWidth,m_iHeight); |
| 120 | // clear_to_color(m_pFrameBuf, makecol(255, 255, 0)); |
| 121 | |
| 122 | m_bInstalled = true; |
| 123 | |
| 124 | return true; |
| 125 | } |
| 126 | |
| 127 | void wxAllegWin::Uninstall() |
| 128 | { |
| 129 | // if ( m_pFrameBuf) |
| 130 | // destroy_bitmap(m_pFrameBuf); |
| 131 | |
| 132 | allegro_exit(); |
| 133 | |
| 134 | m_bInstalled = false; |
| 135 | } |
| 136 | |
| 137 | void wxAllegWin::Rendering() |
| 138 | { |
| 139 | if ( m_bInstalled ) |
| 140 | { |
| 141 | DrawBackground(); |
| 142 | |
| 143 | // Question: doesn't work |
| 144 | //vsync(); |
| 145 | //blit(m_pFrameBuf,screen,0,0,0,0,m_iWidth,m_iHeight); |
| 146 | } |
| 147 | } |
| 148 | |
| 149 | void wxAllegWin::DrawBackground() |
| 150 | { |
| 151 | AL_BITMAP* bmp = load_pcx("allegro.pcx",NULL); |
| 152 | |
| 153 | if ( bmp ) |
| 154 | { |
| 155 | // Question: blit does not work |
| 156 | //blit(bmp,screen,0,0,0,0,m_iWidth,m_iHeight); |
| 157 | acquire_screen(); |
| 158 | draw_sprite(screen, bmp, 0, 0); |
| 159 | // Question: stretch_sprite does not work either |
| 160 | //stretch_sprite(screen, bmp, 0, 0,m_iWidth,m_iHeight); |
| 161 | release_screen(); |
| 162 | } |
| 163 | } |
Can anybody advise?
]]>What is the effect? Is there just a black window, or does the program crash ...?
]]>Install keyboard probably will not work because of wxWidgets way of mapping keyboard itself. Your code is broke on the DrawBackground, a mass memoryleak, I don't know why it's not drawing, but the evt_Paint isn't sent all the time, so if you probably resize the window, the bitmap will show.
]]>wxWidgets doesn't do anything special with the keyboard AFAIK, it just uses the messages from Windows, like any other GUI.
]]>I think wxWidgets is just us win32 api if running in Windows. I don't know why the behalf of wxWidgets is so different. I just copy the idea of dxwindow.c under Allegro test.
The behalf of my code is:
1.The blit is just showing a black screen.
2.The following code is just crashing:
AL_BITMAP* b = create_video_bitmap(m_iWidth, m_iHeight);
draw_sprite(b, bmp, 0, 0);
show_video_bitmap(b);
3.The stretch_sprite is showing a black screen.
4.After install_keyboard the program will run but will not be displayed.
Why are you using a directx window with wx? Why not just install_allegro with SYSTEM_NONE, then run graphics blitting to the wx window? Search the forums, in one of the wx threads I posted my code for that.
]]>The reason why I'm using Directx win is that I believe the performance should be better. Because I have quite a few sprite animations. The reason why I'm using it under wx is that I like its GUI.
When you say use SYSTEM_NOTE, can I still use draw_sprite or blit functions or do you mean to use something like blit_to_hdc? How's the performance?
]]>