basicprintapp.c

所有的操作系统实验相当好的

/********************************************************
* BasicPrintApp.c:
*
* A Windows application that demonstrates
* basic printing techniques.
********************************************************/

#include <windows.h>
 
LRESULT CALLBACK WndProc(HWND hWnd, UINT message,
    WPARAM wParam, LPARAM lParam);
void PrintRectangle();

int WINAPI WinMain(HINSTANCE hCurrentInst,
    HINSTANCE hPrevInstance, PSTR lpszCmdLine,
    int nCmdShow)
{
    WNDCLASS wndClass;
    HWND hWnd;
    MSG msg;
	UINT width;
	UINT height;

    wndClass.style = CS_HREDRAW | CS_VREDRAW;
    wndClass.lpfnWndProc = WndProc;
    wndClass.cbClsExtra = 0;
    wndClass.cbWndExtra = 0;
    wndClass.hInstance = hCurrentInst;
    wndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
    wndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
    wndClass.hbrBackground = GetStockObject(WHITE_BRUSH);
    wndClass.lpszMenuName = NULL;
    wndClass.lpszClassName = "BasicPrintApp";

    RegisterClass(&wndClass);

    width = GetSystemMetrics(SM_CXSCREEN) / 2;
    height = GetSystemMetrics(SM_CYSCREEN) / 2;

    hWnd = CreateWindow(
        "BasicPrintApp",    /* Window class's name.    */
        "Basic Print App",  /* Title bar text.         */
        WS_OVERLAPPEDWINDOW,/* The window's style.     */
        10,                 /* X position.             */
        10,                 /* Y position.             */
        width,              /* Width.                  */
        height,             /* Height.                 */
        NULL,               /* Parent window's handle. */
        NULL,               /* Menu handle.            */
        hCurrentInst,       /* Instance handle.        */
        NULL);              /* No additional data.     */

    ShowWindow(hWnd, nCmdShow);
    UpdateWindow(hWnd);

    while (GetMessage(&msg, NULL, 0, 0))
    {
        TranslateMessage(&msg);
        DispatchMessage(&msg);
    }

    return msg.wParam;
}

LRESULT CALLBACK WndProc(HWND hWnd, UINT message,
    WPARAM wParam, LPARAM lParam)
{
    HDC hDC;
    PAINTSTRUCT paintStruct;

    switch(message)
    {
        case WM_PAINT:
            hDC = BeginPaint(hWnd, &paintStruct);
            TextOut(hDC, 10, 10,
				"Click in the window to print.", 29);
            EndPaint(hWnd, &paintStruct);
            return 0;

        case WM_LBUTTONDOWN:
			PrintRectangle();
			return 0;

        case WM_DESTROY:
            PostQuitMessage(0);
            return 0;
    }

    return DefWindowProc(hWnd, message, wParam, lParam);
}

void PrintRectangle()
{
	PRINTER_INFO_5 printerInfo5[3];
	DWORD needed, returned;
	HDC printDC;
	DOCINFO docInfo;
	char docName[] = "RectangleDoc";
	int result;

	// Step 1: Get a printer DC.
	EnumPrinters(PRINTER_ENUM_DEFAULT, NULL, 5,
		(LPBYTE)printerInfo5, sizeof(printerInfo5),
		&needed, &returned);
	printDC = CreateDC(NULL,
		printerInfo5[0].pPrinterName, NULL, NULL);

	// Step 2: Call StartDoc().
	docInfo.cbSize = sizeof(docInfo);
	docInfo.lpszDocName = docName;
	docInfo.lpszOutput = NULL;
	docInfo.lpszDatatype = NULL;
	docInfo.fwType = 0;
	result = StartDoc(printDC, &docInfo);
	if (result <= 0)
	{
		MessageBox(0, "StartDoc() failed",
			"Basic Print App", MB_OK | MB_ICONERROR );
		return;
	}

	// Step 3: Call StartPage().
	result = StartPage(printDC);
	if (result <= 0)
	{
		MessageBox(0, "StartPage() failed",
			"Basic Print App", MB_OK | MB_ICONERROR );
		return;
	}

	// Step 4: Print data.
	Rectangle(printDC, 20, 20, 1000, 200);
    TextOut(printDC, 100, 90,
        "Windows printing in action!", 27);

	// Step 5: Call EndPage().
	result = EndPage(printDC);
	if (result <= 0)
	{
		MessageBox(0, "EndPage() failed",
			"Basic Print App", MB_OK | MB_ICONERROR );
		return;
	}

	// Step 6: Call EndDoc().
	EndDoc(printDC);
    MessageBox(0, "Document printed", "Basic Print App",
		MB_OK | MB_ICONINFORMATION);
}