怎么用c语言写窗体程序

步骤：

1、注册窗口类；

2、创建窗体；

3、消息循环；

4、编写窗口消息处理函数。

代码：

#include <windows.h>

#include<tchar.h>

LRESULT CALLBACK WindowProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)

int WINAPI _tWinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, LPWSTR szCmdLine, int nCmdShow)

{

    WNDCLASS wc

    wc.style = CS_HREDRAW | CS_VREDRAW

    wc.lpfnWndProc = WindowProc

    wc.cbClsExtra = 0

    wc.cbWndExtra = 0

    wc.hInstance = hInstance

    wc.hIcon = NULL

    wc.hCursor = LoadCursor(NULL,IDC_ARROW)

    wc.hbrBackground = (HBRUSH)COLOR_WINDOW//(HBRUSH)GetStockObject()

    wc.lpszMenuName = NULL

    wc.lpszClassName = _T("MyWindowClass")

    if (!RegisterClass(&wc))

    {

        MessageBox (NULL, _T("无法注册窗口类"), _T("错误"), MB_OK)

        return 0 

    }

    HWND newWindow = CreateWindow(

                                        _T("MyWindowClass"),

                                        _T("我的第一个winapi程序"),

                                        WS_OVERLAPPEDWINDOW,

                                        0,

                                        0,

                                        CW_USEDEFAULT,

                                        CW_USEDEFAULT,

                                        NULL,

                                        NULL,

                                        hInstance,

                                        NULL

                                    )

    if (NULL == newWindow)

    {

        MessageBox (NULL, _T("无法创建窗体"), _T("错误"), MB_OK)

        return 0

    }

    ShowWindow(newWindow, nCmdShow)

    UpdateWindow(newWindow)

    MSG msg

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

    {

        TranslateMessage(&msg)

        DispatchMessage(&msg)

    }

}

    LRESULT CALLBACK WindowProc(HWND hwnd, UINT uMsg, WPARAM wParam, LPARAM lParam)

    {

        switch (uMsg)

        {

            case WM_DESTROY:

            {

                PostQuitMessage(0)

                break

            }

            default :

                return DefWindowProc(hwnd, uMsg, wParam, lParam)

        }

        return 0

    }

就是一个只有标题栏、关闭按钮、最小化按钮、最大化/还原按钮、显示区域的窗体。

要用C语言编写一个窗体应用程序需要调用系统或第三方提供的API函数，一般的步骤是：

定义窗口类

注册窗口类

创建窗口

显示、更新窗口

进行消息循环，不断处理窗口消息

请在提问之前，搜索一下以前的回答！这个问题已经被问过多次了！

以下程序在C++BUILDER中测试通过。

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

#include <windows.h>

#include <stdio.h>

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

WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int nCmdShow)

{

static TCHAR szAppName[]=TEXT("HWCPcn")

static TCHAR szClassName[]=TEXT("HWICPcn")

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 =szClassName

if (!RegisterClass(&wndclass)) {

MessageBox(NULL,TEXT("wiki.cprogram.cn"),szAppName,MB_ICONINFORMATION)

return 0

}

hwnd=CreateWindow(szClassName,TEXT("THE C PROGRAM"), WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NULL,hInstance,NULL)

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 ps

RECT rect

switch (message) {

case WM_PAINT:

hdc=BeginPaint(hwnd,&ps)

GetClientRect(hwnd,&rect)

DrawText(hdc,TEXT("www.CPROGRAM.CN"),-1,&rect,DT_SINGLELINE|DT_CENTER|DT_VCENTER)

EndPaint(hwnd,&ps)

return 0

case WM_CREATE:

MessageBox(NULL,"Hello","Cprogram.cn",MB_OK)

return 0

case WM_DESTROY:

PostQuitMessage(0)

return 0

}

return DefWindowProc(hwnd,message,wParam,lParam)

}

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

---