多线程win32API程序改错？

cwhe_10 2012-10-19 08:41:42


/*---------------------------------------
MULTI1.C -- Multitasking Demo
(c) Charles Petzold, 1998
---------------------------------------*/

#include <windows.h>
#include <math.h>

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

int cyChar ;

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,
PSTR szCmdLine, int iCmdShow)
{
static TCHAR szAppName[] = TEXT ("Multi1") ;
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 ;
}
hwnd = CreateWindow (szAppName, TEXT ("Multitasking Demo"),
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 ;
}

int CheckBottom (HWND hwnd, int cyClient, int iLine)
{
if (iLine * cyChar + cyChar > cyClient)
{
InvalidateRect (hwnd, NULL, TRUE) ;
UpdateWindow (hwnd) ;
iLine = 0 ;
}
return iLine ;
}

// ------------------------------------------------
// Window 1: Display increasing sequence of numbers
// ------------------------------------------------

LRESULT APIENTRY WndProc1 (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static int iNum, iLine, cyClient ;
HDC hdc ;
TCHAR szBuffer[16] ;

switch (message)
{
case WM_SIZE:
cyClient = HIWORD (lParam) ;
return 0 ;
case WM_TIMER:
if (iNum < 0)
iNum = 0 ;

iLine = CheckBottom (hwnd, cyClient, iLine) ;
hdc = GetDC (hwnd) ;

TextOut (hdc, 0, iLine * cyChar, szBuffer,
wsprintf (szBuffer, TEXT ("%d"), iNum++)) ;

ReleaseDC (hwnd, hdc) ;
iLine++ ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}

// ------------------------------------------------------
// Window 2: Display increasing sequence of prime numbers
// ------------------------------------------------------

LRESULT APIENTRY WndProc2 (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static int iNum = 1, iLine, cyClient ;
HDC hdc ;
int i, iSqrt ;
TCHAR szBuffer[16] ;

switch (message)
{
case WM_SIZE:
cyClient = HIWORD (lParam) ;
return 0 ;

case WM_TIMER:
do {
if (++iNum < 0)
iNum = 0 ;

iSqrt = (int) sqrt (iNum) ;
for (i = 2 ; i <= iSqrt ; i++)
if (iNum % i == 0)
break ;
}
while (i <= iSqrt) ;

iLine = CheckBottom (hwnd, cyClient, iLine) ;
hdc = GetDC (hwnd) ;

TextOut (hdc, 0, iLine * cyChar, szBuffer,
wsprintf (szBuffer, TEXT ("%d"), iNum)) ;
ReleaseDC (hwnd, hdc) ;
iLine++ ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}

// ----------------------------------------------------------
// Window 3: Display increasing sequence of Fibonacci numbers
// ----------------------------------------------------------

LRESULT APIENTRY WndProc3 (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static int iNum = 0, iNext = 1, iLine, cyClient ;
HDC hdc ;
int iTemp ;
TCHAR szBuffer[16] ;

switch (message)
{
case WM_SIZE:
cyClient = HIWORD (lParam) ;
return 0 ;

case WM_TIMER:
if (iNum < 0)
{
iNum = 0 ;
iNext = 1 ;
}

iLine = CheckBottom (hwnd, cyClient, iLine) ;
hdc = GetDC (hwnd) ;
TextOut (hdc, 0, iLine * cyChar, szBuffer,
(LPCWSTR) wsprintf (szBuffer, "%d", iNum)) ;

ReleaseDC (hwnd, hdc) ;
iTemp = iNum ;
iNum = iNext ;
iNext += iTemp ;
iLine++ ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}

// -----------------------------------------
// Window 4: Display circles of random radii
// -----------------------------------------

LRESULT APIENTRY WndProc4 (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static int cxClient, cyClient ;
HDC hdc ;
int iDiameter ;

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

case WM_TIMER:
InvalidateRect (hwnd, NULL, TRUE) ;
UpdateWindow (hwnd) ;

iDiameter = rand() % (max (1, min (cxClient, cyClient))) ;
hdc = GetDC (hwnd) ;

Ellipse (hdc, (cxClient - iDiameter) / 2,
(cyClient - iDiameter) / 2,
(cxClient + iDiameter) / 2,
(cyClient + iDiameter) / 2) ;

ReleaseDC (hwnd, hdc) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}

// -----------------------------------
// Main window to create child windows
// -----------------------------------

LRESULT APIENTRY WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static HWND hwndChild[4] ;
static TCHAR * szChildClass[] = { TEXT ("Child1"), TEXT ("Child2"),
TEXT ("Child3"), TEXT ("Child4") } ;
static WNDPROC ChildProc[] = { WndProc1, WndProc2, WndProc3, WndProc4 } ;
HINSTANCE hInstance ;
int i, cxClient, cyClient ;
WNDCLASS wndclass ;

switch (message)
{
case WM_CREATE:
hInstance = (HINSTANCE) GetWindowLong (hwnd, GWL_HINSTANCE) ;

wndclass.style = CS_HREDRAW | CS_VREDRAW ;
wndclass.cbClsExtra = 0 ;
wndclass.cbWndExtra = 0 ;
wndclass.hInstance = hInstance ;
wndclass.hIcon = NULL ;
wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;
wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;
wndclass.lpszMenuName = NULL ;

for (i = 0 ; i < 4 ; i++)
{
wndclass.lpfnWndProc = ChildProc[i] ;
wndclass.lpszClassName = szChildClass[i] ;

RegisterClass (&wndclass) ;

hwndChild[i] = CreateWindow (szChildClass[i], NULL,
WS_CHILDWINDOW | WS_BORDER | WS_VISIBLE,
0, 0, 0, 0,
hwnd, (HMENU) i, hInstance, NULL) ;
}

cyChar = HIWORD (GetDialogBaseUnits ()) ;
SetTimer (hwnd, 1, 10, NULL) ;
return 0 ;

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

for (i = 0 ; i < 4 ; i++)
MoveWindow (hwndChild[i], (i % 2) * cxClient / 2,
(i > 1) * cyClient / 2,
cxClient / 2, cyClient / 2, TRUE) ;
return 0 ;

case WM_TIMER:
for (i = 0 ; i < 4 ; i++)
SendMessage (hwndChild[i], WM_TIMER, wParam, lParam) ;

return 0 ;

case WM_CHAR:
if (wParam == '\x1B')
DestroyWindow (hwnd) ;

return 0 ;

case WM_DESTROY:
KillTimer (hwnd, 1) ;
PostQuitMessage (0) ;
return 0 ;
}
return DefWindowProc (hwnd, message, wParam, lParam) ;
}


报错提示：

1>f:\code\mfc\20-编程竞赛问题四个窗口\20-编程竞赛问题四个窗口\4个窗口编程竞赛.cpp(120): error C2668: “sqrt”: 对重载函数的调用不明确
1> d:\program files\microsoft visual studio 10.0\vc\include\math.h(589): 可能是“long double sqrt(long double)”
1> d:\program files\microsoft visual studio 10.0\vc\include\math.h(541): 或 “float sqrt(float)”
1> d:\program files\microsoft visual studio 10.0\vc\include\math.h(127): 或 “double sqrt(double)”
1> 尝试匹配参数列表“(int)”时
1>f:\code\mfc\20-编程竞赛问题四个窗口\20-编程竞赛问题四个窗口\4个窗口编程竞赛.cpp(166): error C2664: “wsprintfW”: 不能将参数 2 从“const char [3]”转换为“LPCWSTR”
1> 与指向的类型无关；转换要求 reinterpret_cast、C 样式转换或函数样式转换
1>
1>生成失败。

问怎么改啊，还有->这个符号是干嘛的啊
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Eleven 2012-10-19
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/*---------------------------------------

MULTI1.C -- Multitasking Demo

(c) Charles Petzold, 1998

---------------------------------------*/



#include <windows.h>

#include <math.h>



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



int cyChar ;



int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance,

					PSTR szCmdLine, int iCmdShow)

{

	static TCHAR szAppName[] = TEXT ("Multi1") ;

	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 ;

	}

	hwnd = CreateWindow (szAppName, TEXT ("Multitasking Demo"),

		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 ;

}



int CheckBottom (HWND hwnd, int cyClient, int iLine)

{

	if (iLine * cyChar + cyChar > cyClient)

	{

		InvalidateRect (hwnd, NULL, TRUE) ;

		UpdateWindow (hwnd) ;

		iLine = 0 ;

	}

	return iLine ;

}



// ------------------------------------------------

// Window 1: Display increasing sequence of numbers

// ------------------------------------------------



LRESULT APIENTRY WndProc1 (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)

{

	static int iNum, iLine, cyClient ;

	HDC hdc ;

	TCHAR szBuffer[16] ;



	switch (message)

	{

	case WM_SIZE:

		cyClient = HIWORD (lParam) ;

		return 0 ;

	case WM_TIMER:

		if (iNum < 0)

			iNum = 0 ;



		iLine = CheckBottom (hwnd, cyClient, iLine) ;

		hdc = GetDC (hwnd) ;



		TextOut (hdc, 0, iLine * cyChar, szBuffer,  

			wsprintf (szBuffer, TEXT ("%d"), iNum++)) ;



		ReleaseDC (hwnd, hdc) ;

		iLine++ ;

		return 0 ;

	}

	return DefWindowProc (hwnd, message, wParam, lParam) ;

}



// ------------------------------------------------------

// Window 2: Display increasing sequence of prime numbers

// ------------------------------------------------------



LRESULT APIENTRY WndProc2 (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)

{

	static int iNum = 1, iLine, cyClient ;

	HDC hdc ;

	int i, iSqrt ;

	TCHAR szBuffer[16] ;



	switch (message)

	{

	case WM_SIZE:

		cyClient = HIWORD (lParam) ;

		return 0 ;



	case WM_TIMER:

		do {

			if (++iNum < 0)

				iNum = 0 ;



			iSqrt = (int) sqrt ((double)iNum) ;

			for (i = 2 ; i <= iSqrt ; i++)

				if (iNum % i == 0)

					break ;

		}

		while (i <= iSqrt) ;



		iLine = CheckBottom (hwnd, cyClient, iLine) ;

		hdc = GetDC (hwnd) ;



		TextOut (hdc, 0, iLine * cyChar, szBuffer,  

			wsprintf (szBuffer, TEXT ("%d"), iNum)) ;

		ReleaseDC (hwnd, hdc) ;

		iLine++ ;

		return 0 ;

	}

	return DefWindowProc (hwnd, message, wParam, lParam) ;

}



// ----------------------------------------------------------

// Window 3: Display increasing sequence of Fibonacci numbers

// ----------------------------------------------------------



LRESULT APIENTRY WndProc3 (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)

{

	static int iNum = 0, iNext = 1, iLine, cyClient ;

	HDC hdc ;

	int iTemp ;

	TCHAR szBuffer[16] ;



	switch (message)

	{

	case WM_SIZE:

		cyClient = HIWORD (lParam) ;

		return 0 ;



	case WM_TIMER:

		if (iNum < 0)

		{

			iNum = 0 ;

			iNext = 1 ;

		}



		iLine = CheckBottom (hwnd, cyClient, iLine) ;

		hdc = GetDC (hwnd) ;

		wsprintf (szBuffer, _T("%d"), iNum);

		TextOut (hdc, 0, iLine * cyChar, szBuffer,  

			_tcslen(szBuffer)) ;



		ReleaseDC (hwnd, hdc) ;

		iTemp = iNum ;

		iNum = iNext ;

		iNext += iTemp ;

		iLine++ ;

		return 0 ;

	}

	return DefWindowProc (hwnd, message, wParam, lParam) ;

}



// -----------------------------------------

// Window 4: Display circles of random radii

// -----------------------------------------



LRESULT APIENTRY WndProc4 (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)

{

	static int cxClient, cyClient ;

	HDC hdc ;

	int iDiameter ;



	switch (message)

	{

	case WM_SIZE:

		cxClient = LOWORD (lParam) ;

		cyClient = HIWORD (lParam) ;

		return 0 ;



	case WM_TIMER:

		InvalidateRect (hwnd, NULL, TRUE) ;

		UpdateWindow (hwnd) ;



		iDiameter = rand() % (max (1, min (cxClient, cyClient))) ;

		hdc = GetDC (hwnd) ;



		Ellipse (hdc, (cxClient - iDiameter) / 2,

			(cyClient - iDiameter) / 2,

			(cxClient + iDiameter) / 2,

			(cyClient + iDiameter) / 2) ;



		ReleaseDC (hwnd, hdc) ;

		return 0 ;

	}

	return DefWindowProc (hwnd, message, wParam, lParam) ;

}



// -----------------------------------

// Main window to create child windows

// -----------------------------------



LRESULT APIENTRY WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)

{

	static HWND hwndChild[4] ;

	static TCHAR * szChildClass[] = { TEXT ("Child1"), TEXT ("Child2"),

		TEXT ("Child3"), TEXT ("Child4") } ;

	static WNDPROC ChildProc[] = { WndProc1, WndProc2, WndProc3, WndProc4 } ;

	HINSTANCE hInstance ;

	int i, cxClient, cyClient ;

	WNDCLASS wndclass ;



	switch (message)

	{

	case WM_CREATE:

		hInstance = (HINSTANCE) GetWindowLong (hwnd, GWL_HINSTANCE) ;



		wndclass.style = CS_HREDRAW | CS_VREDRAW ;

		wndclass.cbClsExtra = 0 ;

		wndclass.cbWndExtra = 0 ;

		wndclass.hInstance = hInstance ;

		wndclass.hIcon = NULL ;

		wndclass.hCursor = LoadCursor (NULL, IDC_ARROW) ;

		wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH) ;

		wndclass.lpszMenuName = NULL ;



		for (i = 0 ; i < 4 ; i++)

		{

			wndclass.lpfnWndProc = ChildProc[i] ;

			wndclass.lpszClassName = szChildClass[i] ;



			RegisterClass (&wndclass) ;



			hwndChild[i] = CreateWindow (szChildClass[i], NULL,

				WS_CHILDWINDOW | WS_BORDER | WS_VISIBLE,

				0, 0, 0, 0,  

				hwnd, (HMENU) i, hInstance, NULL) ;

		}



		cyChar = HIWORD (GetDialogBaseUnits ()) ;

		SetTimer (hwnd, 1, 10, NULL) ;

		return 0 ;



	case WM_SIZE:

		cxClient = LOWORD (lParam) ;

		cyClient = HIWORD (lParam) ;



		for (i = 0 ; i < 4 ; i++)

			MoveWindow (hwndChild[i], (i % 2) * cxClient / 2,

			(i > 1) * cyClient / 2,

			cxClient / 2, cyClient / 2, TRUE) ;

		return 0 ;



	case WM_TIMER:

		for (i = 0 ; i < 4 ; i++)

			SendMessage (hwndChild[i], WM_TIMER, wParam, lParam) ;



		return 0 ;



	case WM_CHAR:

		if (wParam == '\x1B')

			DestroyWindow (hwnd) ;



		return 0 ;



	case WM_DESTROY:

		KillTimer (hwnd, 1) ;

		PostQuitMessage (0) ;

		return 0 ;

	}

	return DefWindowProc (hwnd, message, wParam, lParam) ;

}
邓学彬 2012-10-19
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1.“sqrt”: 对重载函数的调用不明确
iSqrt = (int) sqrt ((double)iNum) ;

2.“wsprintfW”: 不能将参数 2 从“const char [3]”转换为“LPCWSTR”
因为你的工程是UNICODE的,所以这里改一下:
wsprintf (szBuffer, _T("%d"), iNum++)) ;







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