ｗｉｎｄｏｗｓ程序报错提示，怎么改啊？

[cwhe_10]

/*-----------------------------------------------------------
PRINT.C -- Common routines for Print1, Print2, and Print3
-----------------------------------------------------------*/

#include <windows.h>

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
BOOL PrintMyPage (HWND) ;

extern HINSTANCE hInst ;
extern TCHAR szAppName[] ;
extern TCHAR szCaption[] ;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
HWND hwnd ;
MSG msg ;
WNDCLASS wndclass ;

wndclass.style = CS_HREDRAW | CS_VREDRAW ;
wndclass.lpfnWndProc = WndProc ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
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 ("This program requires Windows NT!"),
szAppName, MB_ICONERROR) ;
return 0 ;
}

hInst = hInstance ;

hwnd = CreateWindow (szAppName, szCaption,
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT,
CW_USEDEFAULT, CW_USEDEFAULT,
NULL, NULL, hInstance, NULL) ;

ShowWindow (hwnd, iCmdShow) ;
UpdateWindow (hwnd) ;

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

void PageGDICalls (HDC hdcPrn, int cxPage, int cyPage)
{
static TCHAR szTextStr[] = TEXT ("Hello, Printer!") ;

Rectangle (hdcPrn, 0, 0, cxPage, cyPage) ;

MoveToEx (hdcPrn, 0, 0, NULL) ;
LineTo (hdcPrn, cxPage, cyPage) ;
MoveToEx (hdcPrn, cxPage, 0, NULL) ;
LineTo (hdcPrn, 0, cyPage) ;

SaveDC (hdcPrn) ;

SetMapMode (hdcPrn, MM_ISOTROPIC) ;
SetWindowExtEx (hdcPrn, 1000, 1000, NULL) ;
SetViewportExtEx (hdcPrn, cxPage / 2, -cyPage / 2, NULL) ;
SetViewportOrgEx (hdcPrn, cxPage / 2, cyPage / 2, NULL) ;

Ellipse (hdcPrn, -500, 500, 500, -500) ;

SetTextAlign (hdcPrn, TA_BASELINE | TA_CENTER) ;
TextOut (hdcPrn, 0, 0, szTextStr, lstrlen (szTextStr)) ;
RestoreDC (hdcPrn, -1) ;
}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static int cxClient, cyClient ;
HDC hdc ;
HMENU hMenu ;
PAINTSTRUCT ps ;

switch (message)
{
case WM_CREATE:
hMenu = GetSystemMenu (hwnd, FALSE) ;
AppendMenu (hMenu, MF_SEPARATOR, 0, NULL) ;
AppendMenu (hMenu, 0, 1, TEXT ("&Print")) ;
return 0 ;

case WM_SIZE:
cxClient = LOWORD (lParam) ;
cyClient = HIWORD (lParam) ;
return 0 ;

case WM_SYSCOMMAND:
if (wParam == 1)
{
if (!PrintMyPage (hwnd))
MessageBox (hwnd, TEXT ("Could not print page!"),
szAppName, MB_OK | MB_ICONEXCLAMATION) ;
return 0 ;
}
break ;

case WM_PAINT :
hdc = BeginPaint (hwnd, &ps) ;

PageGDICalls (hdc, cxClient, cyClient) ;

EndPaint (hwnd, &ps) ;
return 0 ;

case WM_DESTROY :
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
｝




报错提示：
1>ClCompile:
1> 图形和文字.cpp
1>图形和文字.obj : error LNK2001: 无法解析的外部符号 "wchar_t * szCaption" (?szCaption@@3PA_WA)
1>图形和文字.obj : error LNK2001: 无法解析的外部符号 "struct HINSTANCE__ * hInst" (?hInst@@3PAUHINSTANCE__@@A)
1>图形和文字.obj : error LNK2001: 无法解析的外部符号 "wchar_t * szAppName" (?szAppName@@3PA_WA)
1>图形和文字.obj : error LNK2019: 无法解析的外部符号 "int __cdecl PrintMyPage(struct HWND__ *)" (?PrintMyPage@@YAHPAUHWND__@@@Z)，该符号在函数 "long __stdcall WndProc(struct HWND__ *,unsigned int,unsigned int,long)" (?WndProc@@YGJPAUHWND__@@IIJ@Z) 中被引用
1>F:\CODE\MFC\13-打印图形和文字\Debug\13-打印图形和文字.exe : fatal error LNK1120: 4 个无法解析的外部命令

[stjay]

代码不全啊
是手工敲的么？
光盘里有源码的吧

[Eleven]

extern HINSTANCE hInst ;
extern TCHAR szAppName[] ;
extern TCHAR szCaption[] ;
-------------------
你这些都是在哪里定义的？

[null]

#include <windows.h>

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM) ;
BOOL PrintMyPage (HWND) ;

HINSTANCE hInst ;
TCHAR szAppName[] = TEXT("hello");  //
TCHAR szCaption[] = TEXT("world");  // 初始化！！

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
	PSTR szCmdLine, int iCmdShow)
{
	HWND hwnd ;
	MSG msg ;
	WNDCLASS wndclass ;

	wndclass.style = CS_HREDRAW | CS_VREDRAW ;
	wndclass.lpfnWndProc = WndProc ;
	wndclass.cbClsExtra = 0 ;
	wndclass.cbWndExtra = 0 ;
	wndclass.hInstance = hInstance ;
	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 ("This program requires Windows NT!"),
			szAppName, MB_ICONERROR) ;
		return 0 ;
	}

	hInst = hInstance ;

	hwnd = CreateWindow (szAppName, szCaption,
		WS_OVERLAPPEDWINDOW,
		CW_USEDEFAULT, CW_USEDEFAULT,
		CW_USEDEFAULT, CW_USEDEFAULT,
		NULL, NULL, hInstance, NULL) ;

	ShowWindow (hwnd, iCmdShow) ;
	UpdateWindow (hwnd) ;

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

void PageGDICalls (HDC hdcPrn, int cxPage, int cyPage)
{
	static TCHAR szTextStr[] = TEXT ("Hello, Printer!") ;

	Rectangle (hdcPrn, 0, 0, cxPage, cyPage) ;

	MoveToEx (hdcPrn, 0, 0, NULL) ;
	LineTo (hdcPrn, cxPage, cyPage) ;
	MoveToEx (hdcPrn, cxPage, 0, NULL) ;
	LineTo (hdcPrn, 0, cyPage) ;

	SaveDC (hdcPrn) ;

	SetMapMode (hdcPrn, MM_ISOTROPIC) ;
	SetWindowExtEx (hdcPrn, 1000, 1000, NULL) ;
	SetViewportExtEx (hdcPrn, cxPage / 2, -cyPage / 2, NULL) ;
	SetViewportOrgEx (hdcPrn, cxPage / 2, cyPage / 2, NULL) ;

	Ellipse (hdcPrn, -500, 500, 500, -500) ;

	SetTextAlign (hdcPrn, TA_BASELINE | TA_CENTER) ;
	TextOut (hdcPrn, 0, 0, szTextStr, lstrlen (szTextStr)) ;
	RestoreDC (hdcPrn, -1) ;
}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	static int cxClient, cyClient ;
	HDC hdc ;
	HMENU hMenu ;
	PAINTSTRUCT ps ;

	switch (message)
	{
	case WM_CREATE:
		hMenu = GetSystemMenu (hwnd, FALSE) ;
		AppendMenu (hMenu, MF_SEPARATOR, 0, NULL) ;
		AppendMenu (hMenu, 0, 1, TEXT ("&Print")) ;
		return 0 ;

	case WM_SIZE:
		cxClient = LOWORD (lParam) ;
		cyClient = HIWORD (lParam) ;
		return 0 ;

	case WM_SYSCOMMAND:
		if (wParam == 1)
		{
			if (!PrintMyPage (hwnd))
				MessageBox (hwnd, TEXT ("Could not print page!"),
				szAppName, MB_OK | MB_ICONEXCLAMATION) ;
			return 0 ;
		}
		break ;

	case WM_PAINT :
		hdc = BeginPaint (hwnd, &ps) ;

		PageGDICalls (hdc, cxClient, cyClient) ;

		EndPaint (hwnd, &ps) ;
		return 0 ;

	case WM_DESTROY :
		PostQuitMessage (0) ;
		return 0 ;
	}
	return DefWindowProc (hwnd, message, wParam, lParam) ;
}

//  这个方法你没有写。。。
BOOL PrintMyPage (HWND hWnd)
{
	return TRUE;
}

[null]

咦？原来关于win32的这几篇帖子都是楼主发的。。吼吼！在学windows程序设计？