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Reactos
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123456789101112131415161718192021222324252627282930313233343536373839404142434445464748495051525354555657585960616263646566676869707172737475767778798081828384858687888990919293949596979899100101102103104105106107108109110111112113114115116117118119120121122123124125126127128129130131132133134135136137138139140141142143144145146147148#include <windows.h>#include <stdio.h>
static UINT WindowCount;LRESULT WINAPI MultiWndProc(HWND, UINT, WPARAM, LPARAM);
int WINAPIWinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpszCmdLine, int nCmdShow){ WNDCLASS wc; MSG msg; HWND hWnd1; HWND hWnd2; HWND hWndChild;
wc.lpszClassName = "MultiClass"; wc.lpfnWndProc = MultiWndProc; wc.style = CS_VREDRAW | CS_HREDRAW; wc.hInstance = hInstance; wc.hIcon = LoadIcon(NULL, (LPCTSTR) IDI_APPLICATION); wc.hCursor = LoadCursor(NULL, (LPCTSTR) IDC_ARROW); wc.hbrBackground = (HBRUSH) (COLOR_WINDOW + 1); wc.lpszMenuName = NULL; wc.cbClsExtra = 0; wc.cbWndExtra = 0; if (RegisterClass(&wc) == 0) { fprintf(stderr, "RegisterClass failed (last error 0x%lX)\n", GetLastError()); return(1); }
hWnd1 = CreateWindow("MultiClass", "TopLevel1", WS_OVERLAPPEDWINDOW, 0, 0, 320, 240, NULL, NULL, hInstance, NULL);
hWndChild = CreateWindow("MultiClass", "Child1 of TopLevel1", WS_CHILD | WS_BORDER | WS_CAPTION | WS_VISIBLE | WS_SYSMENU, 20, 120, 200, 200, hWnd1, NULL, hInstance, NULL);
hWnd2 = CreateWindow("MultiClass", "TopLevel2", WS_OVERLAPPEDWINDOW, 400, 0, 160, 490, NULL, NULL, hInstance, NULL);
if (! hWnd1 || ! hWnd2 || ! hWndChild) { fprintf(stderr, "CreateWindow failed (last error 0x%lX)\n", GetLastError()); return(1); } WindowCount = 2;
ShowWindow(hWnd1, SW_NORMAL); ShowWindow(hWnd2, SW_NORMAL);
while(GetMessage(&msg, NULL, 0, 0)) { TranslateMessage(&msg); DispatchMessage(&msg); } return msg.wParam;}
LRESULT CALLBACK MultiWndProc(HWND hWnd, UINT msg, WPARAM wParam, LPARAM lParam){ PAINTSTRUCT ps; HDC hDC; LONG Style; RECT Client; HBRUSH Brush; static COLORREF Colors[] = { RGB(0x00, 0x00, 0x00), RGB(0x80, 0x00, 0x00), RGB(0x00, 0x80, 0x00), RGB(0x00, 0x00, 0x80), RGB(0x80, 0x80, 0x00), RGB(0x80, 0x00, 0x80), RGB(0x00, 0x80, 0x80), RGB(0x80, 0x80, 0x80), RGB(0xff, 0x00, 0x00), RGB(0x00, 0xff, 0x00), RGB(0x00, 0x00, 0xff), RGB(0xff, 0xff, 0x00), RGB(0xff, 0x00, 0xff), RGB(0x00, 0xff, 0xff), RGB(0xff, 0xff, 0xff) }; static unsigned CurrentColor = 0;
switch(msg) { case WM_PAINT: hDC = BeginPaint(hWnd, &ps); GetClientRect(hWnd, &Client); Brush = CreateSolidBrush(Colors[CurrentColor]); FillRect(hDC, &Client, Brush); DeleteObject(Brush); CurrentColor++; if (sizeof(Colors) / sizeof(Colors[0]) <= CurrentColor) { CurrentColor = 0; } EndPaint(hWnd, &ps); break;
case WM_DESTROY: Style = GetWindowLong(hWnd, GWL_STYLE); if (0 == (Style & WS_CHILD) && 0 == --WindowCount) { PostQuitMessage(0); } break;
default: return DefWindowProc(hWnd, msg, wParam, lParam); }
return 0;}