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Test "SetCursorPos() doesn't always generate mouse events"
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// This is mostly generated by Visual Studio 2013, I marked all places I changed/added with // DG: ... | |
// this probably doesn't build as is; I didn't know how to create a portable Visual Studio "solution" | |
// or which parts of the project folder are relevant.. | |
// when running this, you can quit with Alt+F4 | |
// TestMouseWarp.cpp : Defines the entry point for the application. | |
// | |
#include <windowsx.h> | |
#include "stdafx.h" | |
#include "TestMouseWarp.h" | |
#include <stdio.h> | |
static FILE* outfile = NULL; // DG: file to log mouse events to | |
#define MAX_LOADSTRING 100 | |
// Global Variables: | |
HINSTANCE hInst; // current instance | |
TCHAR szTitle[MAX_LOADSTRING]; // The title bar text | |
TCHAR szWindowClass[MAX_LOADSTRING]; // the main window class name | |
// Forward declarations of functions included in this code module: | |
ATOM MyRegisterClass(HINSTANCE hInstance); | |
BOOL InitInstance(HINSTANCE, int); | |
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM); | |
INT_PTR CALLBACK About(HWND, UINT, WPARAM, LPARAM); | |
int APIENTRY _tWinMain(_In_ HINSTANCE hInstance, | |
_In_opt_ HINSTANCE hPrevInstance, | |
_In_ LPTSTR lpCmdLine, | |
_In_ int nCmdShow) | |
{ | |
UNREFERENCED_PARAMETER(hPrevInstance); | |
UNREFERENCED_PARAMETER(lpCmdLine); | |
outfile = fopen("mouseevents.log", "wt"); // DG: file to log mouse events to | |
// TODO: Place code here. | |
MSG msg; | |
HACCEL hAccelTable; | |
// Initialize global strings | |
LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING); | |
LoadString(hInstance, IDC_TESTMOUSEWARP, szWindowClass, MAX_LOADSTRING); | |
MyRegisterClass(hInstance); | |
// Perform application initialization: | |
if (!InitInstance (hInstance, nCmdShow)) | |
{ | |
return FALSE; | |
} | |
hAccelTable = LoadAccelerators(hInstance, MAKEINTRESOURCE(IDC_TESTMOUSEWARP)); | |
// Main message loop: | |
while (GetMessage(&msg, NULL, 0, 0)) | |
{ | |
if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg)) | |
{ | |
TranslateMessage(&msg); | |
DispatchMessage(&msg); | |
} | |
// DG: in games these 10 (more likely ~16) ms would be used to do something useful | |
// if I don't sleep here, I get a lot more mouse motion events with 320, 240 (from SetCursorPos()) | |
// which would probably appear less broken | |
Sleep(10); | |
} | |
return (int) msg.wParam; | |
} | |
// | |
// FUNCTION: MyRegisterClass() | |
// | |
// PURPOSE: Registers the window class. | |
// | |
ATOM MyRegisterClass(HINSTANCE hInstance) | |
{ | |
WNDCLASSEX wcex; | |
wcex.cbSize = sizeof(WNDCLASSEX); | |
wcex.style = CS_HREDRAW | CS_VREDRAW; | |
wcex.lpfnWndProc = WndProc; | |
wcex.cbClsExtra = 0; | |
wcex.cbWndExtra = 0; | |
wcex.hInstance = hInstance; | |
wcex.hIcon = LoadIcon(hInstance, MAKEINTRESOURCE(IDI_TESTMOUSEWARP)); | |
wcex.hCursor = LoadCursor(NULL, IDC_ARROW); | |
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1); | |
wcex.lpszMenuName = MAKEINTRESOURCE(IDC_TESTMOUSEWARP); | |
wcex.lpszClassName = szWindowClass; | |
wcex.hIconSm = LoadIcon(wcex.hInstance, MAKEINTRESOURCE(IDI_SMALL)); | |
return RegisterClassEx(&wcex); | |
} | |
// | |
// FUNCTION: InitInstance(HINSTANCE, int) | |
// | |
// PURPOSE: Saves instance handle and creates main window | |
// | |
// COMMENTS: | |
// | |
// In this function, we save the instance handle in a global variable and | |
// create and display the main program window. | |
// | |
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow) | |
{ | |
HWND hWnd; | |
hInst = hInstance; // Store instance handle in our global variable | |
hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW, | |
CW_USEDEFAULT, 0, CW_USEDEFAULT, 0, NULL, NULL, hInstance, NULL); | |
if (!hWnd) | |
{ | |
return FALSE; | |
} | |
ShowWindow(hWnd, nCmdShow); | |
UpdateWindow(hWnd); | |
return TRUE; | |
} | |
// | |
// FUNCTION: WndProc(HWND, UINT, WPARAM, LPARAM) | |
// | |
// PURPOSE: Processes messages for the main window. | |
// | |
// WM_COMMAND - process the application menu | |
// WM_PAINT - Paint the main window | |
// WM_DESTROY - post a quit message and return | |
// | |
// | |
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam) | |
{ | |
int wmId, wmEvent; | |
PAINTSTRUCT ps; | |
HDC hdc; | |
switch (message) | |
{ | |
case WM_COMMAND: | |
wmId = LOWORD(wParam); | |
wmEvent = HIWORD(wParam); | |
// Parse the menu selections: | |
switch (wmId) | |
{ | |
case IDM_ABOUT: | |
DialogBox(hInst, MAKEINTRESOURCE(IDD_ABOUTBOX), hWnd, About); | |
break; | |
case IDM_EXIT: | |
DestroyWindow(hWnd); | |
break; | |
default: | |
return DefWindowProc(hWnd, message, wParam, lParam); | |
} | |
break; | |
case WM_PAINT: | |
hdc = BeginPaint(hWnd, &ps); | |
// TODO: Add any drawing code here... | |
EndPaint(hWnd, &ps); | |
break; | |
case WM_DESTROY: | |
PostQuitMessage(0); | |
break; | |
// DG: added this to log mouse movement events | |
case WM_MOUSEMOVE: | |
{ | |
int xPos = LOWORD(lParam); // for some stupid reason GET_X_LPARAM() couldn't be found despite #include <windowsx.h>.. but it does the same anyway | |
int yPos = HIWORD(lParam); | |
// warp to the middle of the 640x480 window | |
POINT pt; | |
pt.x = 320; | |
pt.y = 240; | |
ClientToScreen(hWnd, &pt); | |
SetCursorPos(pt.x, pt.y); | |
if(xPos == 320 && yPos == 240) // this is probably from a SetCursorPos() call, mark it | |
fprintf(outfile, "### MouseMove: %d %d\n", xPos, yPos); | |
else | |
fprintf(outfile, "MouseMove: %d %d\n", xPos, yPos); | |
fflush(outfile); | |
break; | |
} | |
default: | |
return DefWindowProc(hWnd, message, wParam, lParam); | |
} | |
return 0; | |
} | |
// Message handler for about box. | |
INT_PTR CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam) | |
{ | |
UNREFERENCED_PARAMETER(lParam); | |
switch (message) | |
{ | |
case WM_INITDIALOG: | |
return (INT_PTR)TRUE; | |
case WM_COMMAND: | |
if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL) | |
{ | |
EndDialog(hDlg, LOWORD(wParam)); | |
return (INT_PTR)TRUE; | |
} | |
break; | |
} | |
return (INT_PTR)FALSE; | |
} |
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