Win32控制台工程中创建窗口

http://bbs.gameres.com/thread_63553_1_1.html

有的时候，用控制台同步输出调试信息、程序状态量，比出Log、弹出报错对话框等方法来得有效。那么如何做到呢？如下：

　　简而言之，用GetModuleHandle()函数获得当前程序实例句柄，其它地方与常见的Win32创建窗体方法相同。

　　看MSDN中这句：

If this parameter is NULL, GetModuleHandle returns a handle to the file used to create the calling process.

　　所以“GetModuleHandle(NULL)”返回的就是当前程序实例句柄。

　　例程：

#include <iostream>

#include <tchar.h>

#include <windows.h>

#define MAX_STR 100

// 全局变量:

HINSTANCE hInst; // 当前实例

TCHAR szTitle[MAX_STR] = _TEXT("Console_Win Demo"); // 标题栏文本

TCHAR szWindowClass[MAX_STR] = _TEXT("Console_Win Demo"); // 主窗口类名

// 此代码模块中包含的函数的前向声明:

ATOM MyRegisterClass(HINSTANCE hInstance);

BOOL InitInstance(HINSTANCE hInstance, int nCmdShow);

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

int _tmain(int argc, _TCHAR* argv[])

{

std::cout << "Console_Win Demo" << std::endl << std::endl;

std::cout << "================================" << std::endl << std::endl;

HINSTANCE hInstance = NULL;

int nCmdShow = SW_SHOW; // 该变量取值参见MSDN

hInstance = GetModuleHandle(NULL);

std::cout << "hInstance: " << hInstance << std::endl;

std::cout << "hInstance->unused: " << hInstance->unused << std::endl << std::endl;

std::cout << "================================" << std::endl << std::endl;

MSG msg;

MyRegisterClass(hInstance);

// 执行应用程序初始化:

if (!InitInstance (hInstance, nCmdShow))

{

std::cout << "Error in InitInstance()!" << std::endl;

return FALSE;

}

// 主消息循环:

while (GetMessage(&msg, NULL, 0, 0))

{

TranslateMessage(&msg);

DispatchMessage(&msg);

}

return (int) msg.wParam;

}

//

// 函数: MyRegisterClass()

//

// 目的: 注册窗口类。

//

ATOM MyRegisterClass(HINSTANCE hInstance)

{

WNDCLASSEX wcex;

wcex.cbSize = sizeof(WNDCLASSEX);

wcex.style = CS_HREDRAW | CS_VREDRAW;

wcex.lpfnWndProc = (WNDPROC)WndProc;

wcex.cbClsExtra = 0;

wcex.cbWndExtra = 0;

wcex.hInstance = hInstance;

wcex.hIcon = NULL;

wcex.hCursor = LoadCursor(NULL, IDC_ARROW);

wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);

wcex.lpszMenuName = NULL;

wcex.lpszClassName = szWindowClass;

wcex.hIconSm = NULL;

return RegisterClassEx(&wcex);

}

//

// 函数: InitInstance(HANDLE, int)

//

// 目的: 保存实例句柄并创建主窗口。

//

BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)

{

HWND hWnd;

hInst = hInstance; // 将实例句柄存储在全局变量中

hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,

CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL);

if (!hWnd)

{

return FALSE;

}

ShowWindow(hWnd, nCmdShow);

UpdateWindow(hWnd);

return TRUE;

}

//

// 函数: WndProc(HWND, unsigned, WORD, LONG)

//

// 目的: 处理主窗口的消息。

//

LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)

{

PAINTSTRUCT ps;

HDC hdc;

switch (message)

{

case WM_CREATE:

std::cout << "Hello! I'm a CONSOLE. The WINDOW is my baby." << std::endl;

break;

case WM_COMMAND:

break;

case WM_PAINT:

hdc = BeginPaint(hWnd, &ps);

EndPaint(hWnd, &ps);

break;

case WM_DESTROY:

PostQuitMessage(0);

std::cout << "Goodbye!" << std::endl << std::endl;

break;

default:

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

}

return 0;

}

　　最后，记得在Release版中用这句把控制台隐藏掉：

#pragma comment(linker, "/subsystem:\"windows\" /entry:\"mainCRTStartup\"")