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Windowsprogrammering

Windowsprogrammering. DOS Console Application. ”Console.lib”. 2. Skapar fönstret. Skriver ut. main(..) { }. Asd das asdlk Lasdkasld dldld Dlaieieiei ddd 01029 939333 300-0. cin. main(..) { }. 3. main(..) { }. main(..) { }. cout. 4. WinMain inuti ”console.lib” anropas

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Windowsprogrammering

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  1. Windowsprogrammering CD5250 Daniel Flemström MDH/IDT

  2. DOS Console Application ”Console.lib” 2 Skapar fönstret Skriver ut main(..){} Asd das asdlk Lasdkasld dldld Dlaieieiei ddd 01029 939333 300-0 cin main(..){} 3 main(..){} main(..){ } cout 4 • WinMain inuti ”console.lib” anropas • Fönstret Skapas • Din Main anropas • Cout skrivs ut till fönstret. • Tangentinmatningar kommer till cin myMain.cpp 5 Myprog.exe CD5250 Daniel Flemström MDH/IDT

  3. Windows Application WNDCLASS windowStyleWndProchInstanceiconbackground... WinMain{ Register Class CreateWindow MessageLoop }WndProc(){ Switch.. } message dispatch ”Windows” myWinApp.EXE CD5250 Daniel Flemström MDH/IDT

  4. WinMain int APIENTRY WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow) {WNDCLASSEX wcex; wcex.style = CS_HREDRAW | CS_VREDRAW; wcex.lpfnWndProc = (WNDPROC)WndProc; wcex.hIcon = LoadIcon(hInstance,(LPCTSTR)IDI_KILLERAPP); wcex.hCursor = LoadCursor(NULL, IDC_ARROW); ... RegisterClassEx(&wcex); CreateWindow(....) while (GetMessage(&msg, NULL, 0, 0)) { TranslateMessage(&msg); DispatchMessage(&msg); } CD5250 Daniel Flemström MDH/IDT

  5. WndProc LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam){switch (message) {case WM_TIMER: game.OnTimer( wParam, lParam); break;case WM_CHAR: game.OnChar( wParam, lParam); break; . . . case WM_DESTROY: PostQuitMessage(0); break; default: return DefWindowProc(hWnd, message, wParam, lParam); }return 0;} CD5250 Daniel Flemström MDH/IDT

  6. Windows Messages WM_CHAR, WM_GETTEXT och så vidare. • lparam och wparam betyder olika sakerberoende på vilket meddelande. • Kommer från operativsystemet(tangent och mus)eller från program(set / get window text). • Du bestämmer vilka meddelanden ditt fönster ”förstår” och kan hitta på egna. CD5250 Daniel Flemström MDH/IDT

  7. WM_CHAR CD5250 Daniel Flemström MDH/IDT

  8. Bra Meddelanden att hantera • WM_CREATE När fönstret skapas. • WM_PAINTNär fönstret behöver ritas om (tex om någon ändrat storlek) • WM_RESIZEOm någon ändrar storlek. CD5250 Daniel Flemström MDH/IDT

  9. Rita (annat än i WM_PAINT) DC = Device Context HDC hDc = GetDC(hWnd) ... // Rita som sjutton... ReleaseDc(hWnd, hDc); GDI CD5250 Daniel Flemström MDH/IDT

  10. Rita Ett Streck MoveTo(hDc, 0,0,NULL) LineTo(hDc,10,20); CD5250 Daniel Flemström MDH/IDT

  11. Flera Bra Ritgrejjor • Ellipse(hdc, . . .); • RoundRect(hdc, . . .); • Rectangle(hdc, . . .); • DrawText(hdc, . . .); CD5250 Daniel Flemström MDH/IDT

  12. Ändra Färg Högerklicka ”Goto definition of” För att se flera alternativ! Befintliga Färger och Penslar: hOldPen = SelectObject(hDc,GetStockObject(WHITE_PEN)); hOldBrush = SelectObject(hDc,GetStockObject(WHITE_BRUSH)); Göra Egna Färger och Penslar: HPEN hPen = CreatePen(PS_SOLID,RGB(255,0,0)); SelectObject(hDc,hPen); HBRUSH hBrush = CreateSolidBrush(RGB(10,20,39)); SelectObject(hD,hBrush); OBS! Avsluta alltid med att välja stock pen och brush + delete av egna! SelectObject(hOldPen); DeleteObject(hPen); // Endast på egengjorda! CD5250 Daniel Flemström MDH/IDT

  13. Alltogether Now! HDC hDc = GetDC(hWnd) HPEN pYellowPen = CreatePen(PS_SOLID, RGB(0,255,255)); HPEN hOldPen = SelectObject(pYellowPen); SelectObject(GetStockObject(GRAY_BRUSH)); Rectangle(hDc,10,10,20,20); SelectObject(pOldPen); DeleteObject(pYellowPen); ReleaseDc(hWnd, dc); CD5250 Daniel Flemström MDH/IDT

  14. MER? • Enormt mycket mer finns att lära!!! • Alla fönster fungerar så här (Även activeXer internt) • Charles Petzold”Programming Windows, The Definitive Guide to the Win32 API”Microsoft Press; ISBN: 157 231 995 X; 5th Bk&Cd Rom edition (December 1998) • MFC Gömmer detta CD5250 Daniel Flemström MDH/IDT

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