#include "myWin.h" void procLButtonUp(HWND hw, WPARAM wp, LPARAM lp){//ボタンクリック TCHAR str[256]; int X=LOWORD(lp), Y=HIWORD(lp); wsprintf(str,TEXT(" X = %d, Y = %d"), X, Y); MessageBox(hw, str, TEXT("マウスボタンのクリック"),MB_OK); } LRESULT CALLBACK WndProc(HWND hw, UINT msg, WPARAM wp, LPARAM lp){ switch(msg){ case WM_DESTROY : PostQuitMessage(0) ; return 0; case WM_LBUTTONUP : procLButtonUp(hw, wp, lp); } return DefWindowProc(hw, msg, wp, lp); }