剛接觸win32， 寫了一個簡單的無邊框表單。但當在表單左上角對表單進行縮放時，表單的右邊界和下邊界會不斷抖動。在右上角和左下角縮放時有相同的問題。在右下角縮放時是正常的。請問怎么解決？
代碼如下
#if defined(UNICODE) && !defined(_UNICODE)
#define _UNICODE
#elif defined(_UNICODE) && !defined(UNICODE)
#define UNICODE
#endif
#include <tchar.h>
#include <windows.h>
/* Declare Windows procedure */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
/* Make the class name into a global variable */
TCHAR szClassName[ ] = _T("CodeBlocksWindowsApp");
int WINAPI WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nCmdShow)
{
HWND hwnd; /* This is the handle for our window */
MSG messages; /* Here messages to the application are saved */
WNDCLASSEX wincl; /* Data structure for the windowclass */
/* The Window structure */
wincl.hInstance = hThisInstance;
wincl.lpszClassName = szClassName;
wincl.lpfnWndProc = WindowProcedure; /* This function is called by windows */
wincl.style = CS_DBLCLKS; /* Catch double-clicks */
wincl.cbSize = sizeof (WNDCLASSEX);
/* Use default icon and mouse-pointer */
wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
wincl.lpszMenuName = NULL; /* No menu */
wincl.cbClsExtra = 0; /* No extra bytes after the window class */
wincl.cbWndExtra = 0; /* structure or the window instance */
/* Use Windows's default colour as the background of the window */
wincl.hbrBackground = (HBRUSH) COLOR_GRAYTEXT;
/* Register the window class, and if it fails quit the program */
if (!RegisterClassEx (&wincl))
return 0;
/* The class is registered, let's create the program*/
hwnd = CreateWindowEx (
0, /* Extended possibilites for variation */
szClassName, /* Classname */
_T("Code::Blocks Template Windows App"), /* Title Text */
WS_POPUP, /* default window */
200, /* Windows decides the position */
200, /* where the window ends up on the screen */
640, /* The programs width */
480, /* and height in pixels */
HWND_DESKTOP, /* The window is a child-window to desktop */
NULL, /* No menu */
hThisInstance, /* Program Instance handler */
NULL /* No Window Creation data */
);
/* Make the window visible on the screen */
ShowWindow (hwnd, nCmdShow);
/* Run the message loop. It will run until GetMessage() returns 0 */
while (GetMessage (&messages, NULL, 0, 0))
{
/* Translate virtual-key messages into character messages */
TranslateMessage(&messages);
/* Send message to WindowProcedure */
DispatchMessage(&messages);
}
/* The program return-value is 0 - The value that PostQuitMessage() gave */
return messages.wParam;
}
/* This function is called by the Windows function DispatchMessage() */
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
POINT pt;
RECT rcClient;
switch (message) /* handle the messages */
{
case WM_NCHITTEST:
pt.x = LOWORD(lParam);
pt.y = HIWORD(lParam);
ScreenToClient(hwnd,&pt);
GetClientRect(hwnd, &rcClient);
if (pt.x<rcClient.left+5&&pt.y<rcClient.top+5)//×óé???
{
return HTTOPLEFT;
}
if (pt.x>rcClient.right-5 && pt.y<rcClient.top+5)//óòé???
{
return HTTOPRIGHT;
}
if (pt.x<rcClient.left+5 && pt.y>rcClient.bottom-5)//×ó????
{
return HTBOTTOMLEFT;
}
if (pt.x>rcClient.right-5 && pt.y>rcClient.bottom-5)//óò????
{
return HTBOTTOMRIGHT;
}
if (pt.y<rcClient.top+10)
{
return HTCAPTION;
}
break;
case WM_DESTROY:
PostQuitMessage (0); /* send a WM_QUIT to the message queue */
break;
default: /* for messages that we don't deal with */
return DefWindowProc (hwnd, message, wParam, lParam);
}
return 0;
}
uj5u.com熱心網友回復：
VC6 XP 下測驗沒有你所描述的問題試試 wincl.style = CS_DBLCLKS | CS_OWNDC | CS_HREDRAW | CS_VREDRAW;
uj5u.com熱心網友回復：
VC6 XP 下測驗沒有你所描述的問題注意 要等 游標 變化 后 再 縮放 ！
另外 退出代碼 如下
case WM_CHAR:
if((TCHAR) wParam== 0x0D) PostQuitMessage (0);
break;
uj5u.com熱心網友回復：
試了一下，問題依然存在。我剛剛發現，QQ、酷狗、百度云的界面也存在這個問題。
uj5u.com熱心網友回復：
給你改了改，（WM_NCHITTEST）， 沒問題的 ，4個角 縮放 ，客戶區移動。
// w32NoBoard.cpp : Defines the entry point for the application.
//
#include "stdafx.h"
#include "resource.h"
#include <windows.h>
#include <tchar.h>
#include <stdio.h>
/* Declare Windows procedure */
LRESULT CALLBACK WindowProcedure (HWND, UINT, WPARAM, LPARAM);
/* Make the class name into a global variable */
TCHAR szClassName[ ] = _T("WindowsApp");
int WINAPI WinMain (HINSTANCE hThisInstance,
HINSTANCE hPrevInstance,
LPSTR lpszArgument,
int nCmdShow)
{
HWND hwnd; /* This is the handle for our window */
MSG messages; /* Here messages to the application are saved */
WNDCLASSEX wincl; /* Data structure for the windowclass */
/* The Window structure */
wincl.cbSize = sizeof (WNDCLASSEX);
wincl.hInstance = hThisInstance;
wincl.lpszClassName = szClassName;
wincl.lpfnWndProc = WindowProcedure;/* This function is called by windows */
wincl.style = CS_DBLCLKS | CS_HREDRAW | CS_VREDRAW;/* Catch double-clicks */
/* Use default icon and mouse-pointer */
wincl.hIcon = LoadIcon (NULL, IDI_APPLICATION);
wincl.hIconSm = LoadIcon (NULL, IDI_APPLICATION);
wincl.hCursor = LoadCursor (NULL, IDC_ARROW);
wincl.lpszMenuName = NULL; /* No menu */
wincl.cbClsExtra = 0; /* No extra bytes after the window class */
wincl.cbWndExtra = 0; /* structure or the window instance */
/* Use Windows's default colour as the background of the window */
wincl.hbrBackground = (HBRUSH) CTLCOLOR_DLG;//COLOR_GRAYTEXT;
/* Register the window class, and if it fails quit the program */
if (!RegisterClassEx (&wincl)) return 0;
/* The class is registered, let's create the program*/
hwnd = CreateWindowEx(0, /* Extended possibilites for variation */
szClassName, /* Classname */
0, /* Title Text */
WS_POPUP, /* default window */
200, /* Windows decides the position */
200, /* where the window ends up on the screen */
640, /* The programs width */
480, /* and height in pixels */
HWND_DESKTOP, /* The window is a child-window to desktop */
NULL, /* No menu */
hThisInstance,/* Program Instance handler */
NULL /* No Window Creation data */
);
/* Make the window visible on the screen */
ShowWindow (hwnd, nCmdShow);
/* Run the message loop. It will run until GetMessage() returns 0 */
while (GetMessage (&messages, NULL, 0, 0))
{/* Translate virtual-key messages into character messages */
TranslateMessage(&messages);
/* Send message to WindowProcedure */
DispatchMessage(&messages);
}
/* The program return-value is 0 - The value that PostQuitMessage() gave */
return messages.wParam;
}
//
#define TestBorder 5
LRESULT CALLBACK WindowProcedure (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
static POINT ptLast;
POINT pt;
RECT rc;
switch (message)
{
case WM_NCHITTEST:
pt.x = LOWORD(lParam);
pt.y = HIWORD(lParam);
GetWindowRect(hwnd, &rc);
// move window
rc.top+=TestBorder;
rc.bottom-=TestBorder;
rc.left+=TestBorder;
rc.right-=TestBorder;
if(PtInRect(&rc,pt))
{
return HTCAPTION;
}
// size window
if (pt.x < rc.left && pt.y < rc.top)
{
return HTTOPLEFT;
}
if (pt.x>rc.right && pt.y<rc.top)
{
return HTTOPRIGHT;
}
if (pt.x<rc.left && pt.y>rc.bottom)
{
return HTBOTTOMLEFT;
}
if (pt.x>rc.right && pt.y>rc.bottom)
{
return HTBOTTOMRIGHT;
}
break;
case WM_CHAR:
if((TCHAR) wParam == VK_RETURN) PostQuitMessage (0);
break;
case WM_MOUSEMOVE:
pt.x = LOWORD(lParam);
pt.y = HIWORD(lParam);
if(MK_LBUTTON==wParam)
{
GetWindowRect(hwnd,&rc);
::MoveWindow(hwnd,rc.left+(pt.x-ptLast.x), rc.top+(pt.y-ptLast.y),
rc.right-rc.left, rc.bottom-rc.top,TRUE);
}
else
{
ptLast=pt;
}
break;
default: /* for messages that we don't deal with */
return DefWindowProc (hwnd, message, wParam, lParam);
}
//
return 0;
}
uj5u.com熱心網友回復：
非常感謝
轉載請註明出處，本文鏈接：https://www.uj5u.com/gongcheng/81927.html
標籤：界面
上一篇：PNGButton類