Winapi WM_油漆经过一些重画后,它会发疯的
我正在试用win32 api,所以我决定尝试在windows上绘制一个棋盘,只是为了测试 碰巧我可以画棋盘,我试着在上面实现一些交互性。为了做到这一点,我将鼠标点击存储在一个静态文件上,并在WM_画图上使用它在点击的房子周围绘制一个红色边框 问题是,在点击几下窗口后,屏幕变得全白,没有笔刷填充,我可以找到窗口标题,这是一个完全混乱的局面 这是我的密码Winapi WM_油漆经过一些重画后,它会发疯的,winapi,visual-c++,Winapi,Visual C++,我正在试用win32 api,所以我决定尝试在windows上绘制一个棋盘,只是为了测试 碰巧我可以画棋盘,我试着在上面实现一些交互性。为了做到这一点,我将鼠标点击存储在一个静态文件上,并在WM_画图上使用它在点击的房子周围绘制一个红色边框 问题是,在点击几下窗口后,屏幕变得全白,没有笔刷填充,我可以找到窗口标题,这是一个完全混乱的局面 这是我的密码 #include <windows.h> #include "WindowsX.h" #include "stdafx.h" #inc
#include <windows.h>
#include "WindowsX.h"
#include "stdafx.h"
#include <vector>
#include <stdlib.h>
//const char g_szClassName[] = "myWindowClass";
POINT p;
void TabuleiroCasas(std::vector<RECT>* rc, RECT rcClient)
{
for(int i = 0; i < 8; i++)
{
for(int j = 0; j < 8; j++)
{
int width = (rcClient.right-200 - rcClient.left) / 8;
int height = (rcClient.bottom - rcClient.top) / 8;
RECT r;
r.left = width*j;
r.top = rcClient.bottom - (height * i);
r.right = width*(j+1);
r.bottom = rcClient.bottom - height * (i+1);
rc->push_back(r);
}
}
}
// Step 4: the Window Procedure
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
HPEN hPen = CreatePen(PS_SOLID, 1, RGB(255,255,255));
HPEN hPenSel = CreatePen(PS_SOLID, 3, RGB(255,0,0));
HBRUSH hBrushgrey =CreateSolidBrush(RGB(200,200,200));
HBRUSH hBrushblack =CreateSolidBrush(RGB(255,255,255));
HBRUSH hBrushwhite = CreateSolidBrush(RGB(0,0,0));
PAINTSTRUCT Ps;
std::vector<RECT> casas;
int xPos;
int yPos;
switch(msg)
{
case WM_LBUTTONDOWN:
GetCursorPos(&p);
InvalidateRect(hwnd, NULL, true);
break;
case WM_PAINT:
try
{
RECT rcClient;
GetClientRect(hwnd, &rcClient);
HDC hdc;
//DESENHA TABULEIRO
hdc = BeginPaint(hwnd, &Ps);
SelectObject(hdc, hBrushgrey);
Rectangle(hdc, rcClient.left, rcClient.top, rcClient.right, rcClient.bottom);
Rectangle(hdc, rcClient.left, rcClient.top, rcClient.right-200, rcClient.bottom);
TabuleiroCasas(&casas, rcClient);
for(int i = 0; i < casas.size(); i++)
{
if ( ((i + (i / 8)) % 2) == 1)
{
SelectObject(hdc, hBrushwhite);
Rectangle(hdc, casas[i].left ,casas[i].bottom, casas[i].right, casas[i].top);
}
else
{
SelectObject(hdc, hBrushblack);
Rectangle(hdc, casas[i].left ,casas[i].bottom, casas[i].right, casas[i].top);
}
}
for(int i = 0; i < casas.size(); i++)
{
if((p.x > casas[i].left) && (p.x < casas[i].right) && (p.y < casas[i].top) && (p.y > casas[i].bottom))
{
SelectObject(hdc, hPenSel);
Rectangle(hdc, casas[i].left ,casas[i].bottom, casas[i].right, casas[i].top);
}
}
EndPaint(hwnd, &Ps);
}
catch(int e)
{
}
break;
case WM_SIZE:
//InvalidateRect(hwnd, NULL, false);
break;
case WM_CLOSE:
DestroyWindow(hwnd);
break;
case WM_DESTROY:
PostQuitMessage(0);
break;
default:
return DefWindowProc(hwnd, msg, wParam, lParam);
}
return 0;
}
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance,
LPSTR lpCmdLine, int nCmdShow)
{
WNDCLASSEX wc;
HWND hwnd;
MSG Msg;
//Step 1: Registering the Window Class
wc.cbSize = sizeof(WNDCLASSEX);
wc.style = 0;
wc.lpfnWndProc = WndProc;
wc.cbClsExtra = 0;
wc.cbWndExtra = 0;
wc.hInstance = hInstance;
wc.hIcon = LoadIcon(NULL, IDI_APPLICATION);
wc.hCursor = LoadCursor(NULL, IDC_ARROW);
wc.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wc.lpszMenuName = NULL;
wc.lpszClassName = L"Damas";
wc.hIconSm = LoadIcon(NULL, IDI_APPLICATION);
if(!RegisterClassEx(&wc))
{
MessageBox(NULL, L"Window Registration Failed!", L"Error!",
MB_ICONEXCLAMATION | MB_OK);
return 0;
}
// Step 2: Creating the Window
hwnd = CreateWindowEx(
3,
L"Damas",
L"The title of my window",
WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, CW_USEDEFAULT, 800, 600,
NULL, NULL, hInstance, NULL);
if(hwnd == NULL)
{
MessageBox(NULL, L"Window Creation Failed!", L"Error!",
MB_ICONEXCLAMATION | MB_OK);
return 0;
}
ShowWindow(hwnd, nCmdShow);
UpdateWindow(hwnd);
// Step 3: The Message Loop
while(GetMessage(&Msg, NULL, 0, 0) > 0)
{
TranslateMessage(&Msg);
DispatchMessage(&Msg);
}
return Msg.wParam;
}
#包括
#包括“WindowsX.h”
#包括“stdafx.h”
#包括
#包括
//const char g_szClassName[]=“myWindowClass”;
p点;
void TabuleiroCasas(std::vector*rc,RECT-rcClient)
{
对于(int i=0;i<8;i++)
{
对于(int j=0;j<8;j++)
{
int width=(rcClient.right-200-rcClient.left)/8;
int height=(rcClient.bottom-rcClient.top)/8;
矩形r;
r、 左=宽度*j;
r、 顶部=rcClient.bottom-(高度*i);
r、 右=宽度*(j+1);
r、 底部=rcClient.bottom-高度*(i+1);
rc->推回(r);
}
}
}
//步骤4:窗口过程
LRESULT回调WndProc(HWND HWND,UINT msg,WPARAM WPARAM,LPARAM LPARAM)
{
HPEN HPEN=CreatePen(PS_SOLID,1,RGB(255255));
HPEN hPenSel=CreatePen(PS_SOLID,3,RGB(255,0,0));
HBRUSH hBrushgrey=CreateSolidBrush(RGB(200200));
HBRUSH HBRUSHBLICK=CreateSolidBrush(RGB(255255));
HBRUSH hBrushwhite=CreateSolidBrush(RGB(0,0,0));
PAINTSTRUCT-Ps;
std::载体casas;
int XPO;
int yPos;
开关(msg)
{
案例WM_LBUTTONDOWN:
GetCursorPos&p;
无效(hwnd,NULL,true);
打破
案例WM_油漆:
尝试
{
RECT-rcClient;
GetClientRect(hwnd和rcClient);
HDC-HDC;
//德森哈塔布列罗
hdc=开始喷漆(hwnd和Ps);
选择对象(hdc、HBRUSH格雷);
矩形(hdc、rcClient.left、rcClient.top、rcClient.right、rcClient.bottom);
矩形(hdc,rcClient.left,rcClient.top,rcClient.right-200,rcClient.bottom);
TabuleiroCasas(和casas,rcClient);
对于(int i=0;icasas[i].左)和&(p.xcasas[i].下))
{
选择对象(hdc、hPenSel);
矩形(hdc,casas[i]。左侧,casas[i]。底部,casas[i]。右侧,casas[i]。顶部);
}
}
端漆(hwnd和Ps);
}
捕获(INTE)
{
}
打破
案例WM_大小:
//无效(hwnd、NULL、false);
打破
案例WM_结束:
窗口(hwnd);
打破
案例WM_销毁:
PostQuitMessage(0);
打破
违约:
返回DefWindowProc(hwnd、msg、wParam、lParam);
}
返回0;
}
int WINAPI WinMain(HINSTANCE HINSTANCE、HINSTANCE HPPreInstance、,
LPSTR lpCmdLine,int nCmdShow)
{
WNDCLASSEX wc;
HWND-HWND;
味精;
//步骤1:注册窗口类
wc.cbSize=sizeof(WNDCLASSEX);
wc.style=0;
wc.lpfnWndProc=WndProc;
wc.cbClsExtra=0;
wc.cbWndExtra=0;
wc.hInstance=hInstance;
wc.hIcon=LoadIcon(空,IDI_应用程序);
wc.hCursor=LoadCursor(空,IDC_箭头);
wc.hbrBackground=(HBRUSH)(彩色窗口+1);
wc.lpszMenuName=NULL;
wc.lpszClassName=L“Damas”;
wc.hIconSm=LoadIcon(空,IDI_应用程序);
如果(!RegisterClassEx(&wc))
{
MessageBox(NULL,L“窗口注册失败!”,L“错误!”,
MB|U图标连接| MB|U OK);
返回0;
}
//步骤2:创建窗口
hwnd=CreateWindowEx(
3.
L“Damas”,
L“我窗口的标题”,
WS_重叠窗口,
CW_USEDEFAULT,CW_USEDEFAULT,800600,
NULL,NULL,hInstance,NULL);
if(hwnd==NULL)
{
MessageBox(NULL,L“窗口创建失败!”,L“错误!”,
MB|U图标连接| MB|U OK);
返回0;
}
显示窗口(hwnd、nCmdShow);
更新窗口(hwnd);
//步骤3:消息循环
while(GetMessage(&Msg,NULL,0,0)>0)
{
翻译信息(&Msg);
发送消息(&Msg);
}
返回Msg.wParam;
}
问题可以在窗口的顶部找到p
LRESULT CALLBACK WndProc(HWND hwnd, UINT msg, WPARAM wParam, LPARAM lParam)
{
HPEN hPen = CreatePen(PS_SOLID, 1, RGB(255,255,255));
HPEN hPenSel = CreatePen(PS_SOLID, 3, RGB(255,0,0));
HBRUSH hBrushgrey =CreateSolidBrush(RGB(200,200,200));
HBRUSH hBrushblack =CreateSolidBrush(RGB(255,255,255));
HBRUSH hBrushwhite = CreateSolidBrush(RGB(0,0,0));
.....
}
p.x = GET_X_LPARAM(lParam);
p.y = GET_Y_LPARAM(lParam);
#include <WindowsX.h>