1-win32 ile veya mfc ile bir dialog yaratiyorsun.
2- onmousemove eventinde, tnaimladigin vektore pointlerei yaziyorsun
3- onpaintte vektoru ekrana basiyorsun
hangi adimi anlamadin
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asagida cok optimize olmasada istedigin isi yapan bir ornek verdim
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<code>
#include<windows.h>
#include<vector>
LRESULT CALLBACK WndProc(HWND,UINT,WPARAM,LPARAM);
int WINAPI WinMain(HINSTANCE hInst, HINSTANCE hPrev,LPSTR lpCmd,int nShow)
{
static TCHAR szAppName[]="MouseMoveFill";
MSG msg;
WNDCLASS wcl;
HWND hwnd;
wcl.cbClsExtra = 0;
wcl.cbWndExtra = 0;
wcl.hbrBackground = (HBRUSH) GetStockObject(WHITE_BRUSH);
wcl.hCursor = LoadCursor(NULL,IDC_ARROW);
wcl.hIcon = LoadIcon(NULL,IDI_APPLICATION);
wcl.hInstance = hInst;
wcl.lpfnWndProc = WndProc;
wcl.lpszClassName = szAppName;
wcl.lpszMenuName = NULL;
wcl.style = CS_HREDRAW|CS_VREDRAW;
if (!RegisterClass(&wcl))
{
MessageBox(NULL,"Problem with registering windows wcl","Error",MB_OK|MB_ICONERROR);
return 1;
}
hwnd = CreateWindow(szAppName,"Click mouse and move it",WS_OVERLAPPEDWINDOW,CW_USEDEFAULT,
CW_USEDEFAULT,CW_USEDEFAULT,CW_USEDEFAULT,NULL,NUL L,hInst,NULL);
ShowWindow(hwnd,nShow);
UpdateWindow(hwnd);
while(GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return msg.wParam;
}
LRESULT CALLBACK WndProc(HWND hwnd,UINT msg, WPARAM wParam,LPARAM lParam)
{
static std::vector<POINT>mouseMoves;
POINT point;
HDC hdc;
PAINTSTRUCT ps;
int i,k;
switch(msg)
{
case WM_MOUSEMOVE:
if(wParam&MK_LBUTTON)
{
point.x = LOWORD(lParam);
point.y = HIWORD(lParam);
mouseMoves.push_back(point);
hdc = GetDC(hwnd);
SetPixel(hdc,LOWORD(lParam),HIWORD(lParam),0);
ReleaseDC(hwnd,hdc);
}
break;
case WM_PAINT:
hdc = BeginPaint(hwnd,&ps);
SetCursor (LoadCursor (NULL, IDC_WAIT)) ;
ShowCursor (TRUE) ;
k = mouseMoves.size();
for(i=0;i<k;i++)
SetPixel(hdc,mouseMoves[i].x,mouseMoves[i].y,0);
ShowCursor (FALSE) ;
SetCursor (LoadCursor (NULL, IDC_ARROW)) ;
EndPaint (hwnd, &ps) ;
break;
case WM_DESTROY:
PostQuitMessage(0);
return 0;
}
return DefWindowProc(hwnd,msg,wParam,lParam);
}
</code>