Linguagem C - hdcMem = CreateCompatibleDC(hdc);

#include <windows.h> #include "resource.h" LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); int WINAPI WinMain(HINSTANCE hI, HINSTANCE hPI, PSTR szCmdLine, int iCmdShow) { static TCHAR szAppName [] = TEXT("Montagem"); HWND hwnd; MSG msg; WNDCLASS wndclass; wndclass.style = CS_HREDRAW | CS_VREDRAW; wndclass.lpfnWndProc = WndProc; wndclass.cbClsExtra = 0; wndclass.cbWndExtra = 0; wndclass.hInstance = hI; wndclass.hIcon = LoadIcon(NULL, IDI_APPLICATION); wndclass.hCursor = LoadCursor(NULL, IDC_ARROW); wndclass.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH); wndclass.lpszMenuName = NULL; wndclass.lpszClassName = szAppName; if(!RegisterClass(&wndclass)) { MessageBox(NULL, TEXT("Erro!"), szAppName, MB_ICONERROR); return 0; } hwnd = CreateWindow( szAppName, TEXT("Carregar Bitmap"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 820, 460, NULL, NULL, hI, NULL ); ShowWindow(hwnd, iCmdShow); UpdateWindow(hwnd); while(GetMessage(&msg, NULL, 0, 0)) { TranslateMessage(&msg); DispatchMessage (&msg); FreeConsole(); } return msg.wParam; } LRESULT CALLBACK WndProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lP) { static HBITMAP hBitmap; static int cxClient, cyClient, cxSource, cySource; BITMAP bitmap; HDC hdc, hdcMem; HINSTANCE hInstance; int h, v; PAINTSTRUCT ps; switch(message) { case WM_CREATE: hInstance = ((LPCREATESTRUCT) lP)->hInstance; hBitmap = LoadBitmap(hInstance, IMAGEM); GetObject(hBitmap, sizeof(BITMAP), &bitmap); cxSource = bitmap.bmWidth; cySource = bitmap.bmHeight; CreateWindow( TEXT("edit"), TEXT(""), WS_VISIBLE | WS_CHILD, 10, 40, 100, 20, hwnd, NULL, NULL, NULL ); CreateWindow( TEXT("button"), TEXT("Avançar"), WS_VISIBLE | WS_CHILD, 140, 40, 100, 20, hwnd, NULL, NULL, NULL ); return 0; case WM_SIZE: cxClient = LOWORD(lP); cyClient = HIWORD(lP); return 0; case WM_PAINT: hdc = BeginPaint(hwnd, &ps); hdcMem = CreateCompatibleDC(hdc); SelectObject(hdcMem, hBitmap); for(v = 0; v<cyClient; v+=cySource) { for(h = 0; h<cxClient; h+=cxSource) { BitBlt(hdc,h,v,cxSource,cySource,hdcMem,0,0,SRCCOPY); } } DeleteDC(hdcMem); EndPaint(hwnd, &ps); return 0; case WM_DESTROY: DeleteObject(hBitmap); PostQuitMessage(0); return 0; } return DefWindowProc(hwnd, message, wParam, lP); }