[Dev-C++]WinApi kliknięcie na button |
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[Dev-C++]WinApi kliknięcie na button |
pon, 01 lut 2010 - 18:50
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#1
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Nowy na forum Grupa: Użytkownicy Postów: 13 Dołączył: sob, 30 sty 10 Nr użytkownika: 2,030 |
Witam. Dziś zacząłem się uczyć WinApi i zacząłem pisać prosty kalkulator. Jednak nie wiem czemu mimo iż kompilator (Dev-C++) nie wyświetla błędów to przycisk nie reaguje na kliknięcie. Oto kod:
C++ #include <windows.h> /* Declare Windows procedure */ LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM); /* Make the class name into a global variable */ char szClassName[ ] = "Mini Calc"; int WINAPI WinMain (HINSTANCE hThisInstance, HINSTANCE hPrevInstance, LPSTR lpszArgument, int nFunsterStil) { HWND hwnd; /* This is the handle for our window */ MSG messages; /* Here messages to the application are saved */ WNDCLASSEX wincl; /* Data structure for the windowclass */ /* The Window structure */ wincl.hInstance = hThisInstance; wincl.lpszClassName = szClassName; wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */ wincl.style = CS_DBLCLKS; /* Catch double-clicks */ wincl.cbSize = sizeof (WNDCLASSEX); /* Use default icon and mouse-pointer */ wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION); wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION); wincl.hCursor = LoadCursor (NULL, IDC_ARROW); wincl.lpszMenuName = NULL; /* No menu */ wincl.cbClsExtra = 0; /* No extra bytes after the window class */ wincl.cbWndExtra = 0; /* structure or the window instance */ /* Use Windows's default color as the background of the window */ wincl.hbrBackground = (HBRUSH) 16; // wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND; - it's default /* Register the window class, and if it fails quit the program */ if (!RegisterClassEx (&wincl)) return 0; /* The class is registered, let's create the program*/ hwnd = CreateWindowEx ( 0, /* Extended possibilites for variation */ szClassName, /* Classname */ "Mini Calc", /* Title Text */ WS_OVERLAPPEDWINDOW, /* default window */ CW_USEDEFAULT, /* Windows decides the position */ CW_USEDEFAULT, /* where the window ends up on the screen */ 100*2, /* The programs width */ 100, /* and height in pixels */ HWND_DESKTOP, /* The window is a child-window to desktop */ NULL, /* No menu */ hThisInstance, /* Program Instance handler */ NULL /* No Window Creation data */ ); CreateWindow("EDIT","", WS_CHILD | WS_VISIBLE |WS_BORDER, 5, 10, 30, 20, hwnd, (HMENU)103, GetModuleHandle(NULL), NULL); CreateWindow("EDIT","", WS_CHILD | WS_VISIBLE |WS_BORDER, 87, 10, 30, 20, hwnd, (HMENU)103, GetModuleHandle(NULL), NULL); HWND combobox; combobox = CreateWindowEx(WS_EX_CLIENTEDGE, "COMBOBOX", NULL, WS_CHILD | WS_VISIBLE | WS_BORDER | CBS_DROPDOWNLIST, 35, 8, 50, 100, hwnd, NULL, GetModuleHandle(NULL), NULL); SendMessage(combobox, CB_ADDSTRING, 0, (LPARAM)"+"); SendMessage(combobox, CB_ADDSTRING, 0, (LPARAM)"-"); SendMessage(combobox, CB_ADDSTRING, 0, (LPARAM)"/"); SendMessage(combobox, CB_ADDSTRING, 0, (LPARAM)"*"); SendMessage(combobox,CB_SETCURSEL,(WPARAM)0,0); HWND hwnd_ed_u; hwnd_ed_u = CreateWindow("edit", "=", WS_CHILD | WS_VISIBLE | 0 | ES_READONLY | 0, 120, 12, 10, 15, hwnd, (HMENU)(103), (HINSTANCE) GetWindowLong (hwnd, GWL_HINSTANCE), NULL); /* Make the window visible on the screen */ ShowWindow (hwnd, nFunsterStil); /* Run the message loop. It will run until GetMessage() returns 0 */ while (GetMessage (&messages, NULL, 0, 0)) { /* Translate virtual-key messages into character messages */ TranslateMessage(&messages); /* Send message to WindowProcedure */ DispatchMessage(&messages); } /* The program return-value is 0 - The value that PostQuitMessage() gave */ return messages.wParam; } /* This function is called by the Windows function DispatchMessage() */ LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { switch (message) /* handle the messages */ { case WM_CREATE: CreateWindowEx(0, "BUTTON", "Oblicz", WS_CHILD | WS_VISIBLE, 40, 40, 100, 20, hwnd, NULL, GetModuleHandle(NULL), NULL); HWND hwnd_ed_r; hwnd_ed_r = CreateWindow("EDIT","", WS_CHILD | WS_VISIBLE |WS_BORDER, 132, 10, 50, 20, hwnd, (HMENU)103, GetModuleHandle(NULL), NULL); SetWindowText(hwnd_ed_r, "a"); break; case WM_COMMAND: if(wParam==1) SetWindowText(hwnd_ed_r, "b"); break; case WM_DESTROY: PostQuitMessage (0); /* send a WM_QUIT to the message queue */ break; default: /* for messages that we don't deal with */ return DefWindowProc (hwnd, message, wParam, lParam); } return 0; } Proszę o pomoc, pozdrawiam |
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pon, 01 lut 2010 - 19:10
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#2
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Ekspert Grupa: Super użytkownicy Postów: 468 Dołączył: pon, 12 lis 07 Skąd: Sławno Nr użytkownika: 954 Gadu-Gadu: 11909981 |
jeśli się nie mylę, to tu jest źle
C++ case WM_COMMAND: if(wParam==1) SetWindowText(hwnd_ed_r, "b"); break; poczytaj o obsłudze komunikatów i o przyciskach Pozdrawiam! ps to tak na szybko! |
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pon, 01 lut 2010 - 19:31
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#3
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Nowy na forum Grupa: Użytkownicy Postów: 13 Dołączył: sob, 30 sty 10 Nr użytkownika: 2,030 |
Zmieniłem tak (dodałem else podzas WM_COMMAND) i okienko wyświetliło się 4 razy przy starcie, a przy kliknięciu przycisku już nie... w ogóle nie reaguje na jakąkolwiek akcję? czemu?
C++ LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { switch (message) /* handle the messages */ { case WM_CREATE: #define a1 501 CreateWindowEx(0, "BUTTON", "Oblicz", WS_CHILD | WS_VISIBLE, 40, 40, 100, 20, hwnd, (HMENU)a1, GetModuleHandle(NULL), NULL); HWND hwnd_ed_r; hwnd_ed_r = CreateWindow("EDIT","", WS_CHILD | WS_VISIBLE |WS_BORDER, 132, 10, 50, 20, hwnd, (HMENU)103, GetModuleHandle(NULL), NULL); SetWindowText(hwnd_ed_r, "a"); break; case WM_COMMAND: if(wParam==a1) SetWindowText(hwnd_ed_r, "b"); else MessageBox(hwnd, "a", "Test", MB_ICONINFORMATION); break; case WM_DESTROY: PostQuitMessage (0); /* send a WM_QUIT to the message queue */ break; default: /* for messages that we don't deal with */ return DefWindowProc (hwnd, message, wParam, lParam); } return 0; } jak by mój kompilator to Dev-C++ (ale wątpię, żeby to było przez niego) |
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pon, 01 lut 2010 - 22:18
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#4
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Ekspert Grupa: Super użytkownicy Postów: 468 Dołączył: pon, 12 lis 07 Skąd: Sławno Nr użytkownika: 954 Gadu-Gadu: 11909981 |
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śro, 03 lut 2010 - 17:36
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#5
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Nowy na forum Grupa: Użytkownicy Postów: 13 Dołączył: sob, 30 sty 10 Nr użytkownika: 2,030 |
Ok. Poczytałem (wcześniej też to czytałem, ale ja w programowaniu zawsze jestem jakiś niecierpliwy i nie czytam dokładnie). Ale mam jeszcze jeden problem. Dałem 2 akcje dla przycisku. Wyświetlenie okienka i zmiana tekstu. Okienko się wyświetla, ale tekst w polu tekstowym nie. Oto kod:
C++ #include <windows.h> /* Declare Windows procedure */ LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM); /* Make the class name into a global variable */ char szClassName[ ] = "Mini Calc"; int WINAPI WinMain (HINSTANCE hThisInstance, HINSTANCE hPrevInstance, LPSTR lpszArgument, int nFunsterStil) { HWND hwnd; /* This is the handle for our window */ MSG messages; /* Here messages to the application are saved */ WNDCLASSEX wincl; /* Data structure for the windowclass */ /* The Window structure */ wincl.hInstance = hThisInstance; wincl.lpszClassName = szClassName; wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */ wincl.style = CS_DBLCLKS; /* Catch double-clicks */ wincl.cbSize = sizeof (WNDCLASSEX); /* Use default icon and mouse-pointer */ wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION); wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION); wincl.hCursor = LoadCursor (NULL, IDC_ARROW); wincl.lpszMenuName = NULL; /* No menu */ wincl.cbClsExtra = 0; /* No extra bytes after the window class */ wincl.cbWndExtra = 0; /* structure or the window instance */ /* Use Windows's default color as the background of the window */ wincl.hbrBackground = (HBRUSH) 16; // wincl.hbrBackground = (HBRUSH) COLOR_BACKGROUND; - it's default /* Register the window class, and if it fails quit the program */ if (!RegisterClassEx (&wincl)) return 0; /* The class is registered, let's create the program*/ hwnd = CreateWindowEx ( 0, /* Extended possibilites for variation */ szClassName, /* Classname */ "Mini Calc", /* Title Text */ WS_OVERLAPPEDWINDOW, /* default window */ CW_USEDEFAULT, /* Windows decides the position */ CW_USEDEFAULT, /* where the window ends up on the screen */ 100*2, /* The programs width */ 100, /* and height in pixels */ HWND_DESKTOP, /* The window is a child-window to desktop */ NULL, /* No menu */ hThisInstance, /* Program Instance handler */ NULL /* No Window Creation data */ ); /* Make the window visible on the screen */ ShowWindow (hwnd, nFunsterStil); /* Run the message loop. It will run until GetMessage() returns 0 */ while (GetMessage (&messages, NULL, 0, 0)) { /* Translate virtual-key messages into character messages */ TranslateMessage(&messages); /* Send message to WindowProcedure */ DispatchMessage(&messages); } /* The program return-value is 0 - The value that PostQuitMessage() gave */ return messages.wParam; } /* This function is called by the Windows function DispatchMessage() */ LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam) { switch (message) /* handle the messages */ { case WM_CREATE: CreateWindow("EDIT","", WS_CHILD | WS_VISIBLE |WS_BORDER, 5, 10, 30, 20, hwnd, (HMENU)103, GetModuleHandle(NULL), NULL); CreateWindow("EDIT","", WS_CHILD | WS_VISIBLE |WS_BORDER, 87, 10, 30, 20, hwnd, (HMENU)103, GetModuleHandle(NULL), NULL); HWND combobox; combobox = CreateWindowEx(WS_EX_CLIENTEDGE, "COMBOBOX", NULL, WS_CHILD | WS_VISIBLE | WS_BORDER | CBS_DROPDOWNLIST, 35, 8, 50, 100, hwnd, NULL, GetModuleHandle(NULL), NULL); SendMessage(combobox, CB_ADDSTRING, 0, (LPARAM)"+"); SendMessage(combobox, CB_ADDSTRING, 0, (LPARAM)"-"); SendMessage(combobox, CB_ADDSTRING, 0, (LPARAM)"/"); SendMessage(combobox, CB_ADDSTRING, 0, (LPARAM)"*"); SendMessage(combobox,CB_SETCURSEL,(WPARAM)0,0); HWND hwnd_ed_u; hwnd_ed_u = CreateWindow("edit", "=", WS_CHILD | WS_VISIBLE | 0 | ES_READONLY | 0, 120, 12, 10, 15, hwnd, (HMENU)(103), (HINSTANCE) GetWindowLong (hwnd, GWL_HINSTANCE), NULL); #define a1 501 HWND hwnd_btn; hwnd_btn = CreateWindowEx(0, "BUTTON", "Oblicz", WS_CHILD | WS_VISIBLE, 40, 40, 100, 20, hwnd, (HMENU)a1, GetModuleHandle(NULL), NULL); HWND hwnd_ed_r; hwnd_ed_r = CreateWindow("EDIT","", WS_CHILD | WS_VISIBLE |WS_BORDER, 132, 10, 50, 20, hwnd, (HMENU)103, GetModuleHandle(NULL), NULL); SetWindowText(hwnd_ed_r, "a"); break; case WM_COMMAND: if(wParam==a1){ SetWindowText(hwnd_ed_r, "b"); MessageBox(hwnd, "a", "Test", MB_ICONINFORMATION); } break; case WM_DESTROY: PostQuitMessage (0); /* send a WM_QUIT to the message queue */ break; default: /* for messages that we don't deal with */ return DefWindowProc (hwnd, message, wParam, lParam); } return 0; } |
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śro, 10 lut 2010 - 22:53
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#6
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Nowy na forum Grupa: Użytkownicy Postów: 4 Dołączył: śro, 10 lut 10 Nr użytkownika: 2,048 |
Deklarację
C++ HWND hwnd_ed_r; umieść tak, aby otrzymać zmienną globalną |
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