求助,小甲鱼windows程序设计第009讲
为什么窗口关不了咧?点关闭没反应,注释掉WM_PAINT才能关。LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
HDC hdc;
TCHAR szBuffer;
int i,j;
switch(message)
{
/*case WM_PAINT:
hdc=GetDC(hwnd);
for(i=0;i<10;i++)
{
wsprintf(szBuffer,"%d.Hello the beautiful world!",i+1);
TextOut(hdc,0,i*15,szBuffer,lstrlen(szBuffer));
}
ReleaseDC(hwnd,hdc);
return 0;*/
case WM_CLOSE:
if(MessageBox(hwnd,TEXT("Do you want to kill it?"),TEXT("Close window"),MB_YESNO|MB_ICONQUESTION)==IDYES)
DestroyWindow(hwnd);
else
return 0;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hwnd,message,wParam,lParam);
}
这是全部代码
#include<windows.h>
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
int WINAPI WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,PSTR szCmdLine,int iCmdShow)
{
static TCHAR szAppName[]=TEXT("MyWindow");
HWND hwnd;
MSG msg;
WNDCLASS wndclass;
wndclass.style=CS_VREDRAW|CS_HREDRAW;
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 programming must run on Windows NT"),szAppName,MB_OK|MB_ICONERROR);
return 0;
}
hwnd=CreateWindow(szAppName,TEXT("Hello World"),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;
}
LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
HDC hdc;
TCHAR szBuffer;
int i,j;
switch(message)
{
case WM_PAINT:
hdc=GetDC(hwnd);
for(i=0;i<10;i++)
{
wsprintf(szBuffer,"%d.Hello the beautiful world!",i+1);
TextOut(hdc,0,i*15,szBuffer,lstrlen(szBuffer));
}
ReleaseDC(hwnd,hdc);
return 0;
case WM_CLOSE:
if(MessageBox(hwnd,TEXT("Do you want to kill it?"),TEXT("Close window"),MB_YESNO|MB_ICONQUESTION)==IDYES)
DestroyWindow(hwnd);
else
return 0;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hwnd,message,wParam,lParam);
}
我把 case WM_CLOSE分支给注释掉,可以关闭窗口。虽然不知道为什么 智商是硬伤 发表于 2015-8-12 08:12
我把 case WM_CLOSE分支给注释掉,可以关闭窗口。虽然不知道为什么
【转载】GetDC函数导致窗口闪烁的原因
http://bbs.fishc.com/thread-50716-1-1.html
(出处: 鱼C论坛)
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