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发表于 2014-6-8 19:08:50
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小甲鱼 发表于 2014-6-8 14:41
不用专门去获取,WM_NCLBUTTONDOWN 消息的 lParam 成员就是非客户区触发此消息时候的鼠标指针。
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在您给的网址上没有找到相关信息。下面这个代码就是利用了lParam 成员来获取鼠标坐标的,但是不能获取非客户区的坐标。- /* -------------------------------------------------------------------
- MyWindows.c -- 基本窗口模型
- 《Windows 程序设计(SDK)》视频教程
- --------------------------------------------------------------------*/
- #include <windows.h>
- #include<windowsx.h>
- LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
- int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow)
- {
- static TCHAR szAppName[] = TEXT("MyWindows");
- 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 = szAppName;
- if (!RegisterClass(&wndclass))
- {
- MessageBox(NULL, TEXT("这个程序需要在 Windows NT 才能执行!"), szAppName, MB_ICONERROR);
- return 0;
- }
- hwnd = CreateWindow(szAppName,
- TEXT("鱼C工作室"),
- 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;
- PAINTSTRUCT ps;
- TCHAR szBuffer[30];
- POINT point;
- RECT rect;
- static RECT rr;
- static int cxClient;
- static int cyClient;
- switch (message){
- case WM_SIZE:
- cxClient = GET_X_LPARAM(lParam);
- cyClient = GET_Y_LPARAM(lParam);
- GetClientRect(hwnd, &rr);
- //wsprintf(szBuffer,TEXT("cyClient %d"),cyClient);
- //MessageBox(NULL,szBuffer,TEXT("tip"),MB_ICONERROR);
- return 0;
- case WM_PAINT:
- hdc = BeginPaint(hwnd, &ps);
- GetCursorPos(&point);
- TextOut(hdc, 200, 200, szBuffer, wsprintf(szBuffer, TEXT("the point is %d,%d"), point.x, point.y));
- EndPaint(hwnd, &ps);
- return 0;
- case WM_DESTROY:
- PostQuitMessage(0);
- return 0;
- case WM_MOUSEMOVE:
- //SendMessage(hwnd,WM_PAINT,0,0);
- rect.left = rr.left;
- rect.top = rr.top;
- rect.right = rr.right;
- rect.bottom = rr.bottom;
- InvalidateRect(hwnd, &rect, TRUE);
- return 0;
- }
- return DefWindowProc(hwnd, message, wParam, lParam);
- }
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