c++显示多个图像 gid+
我试图在按下鼠标左键时显示图像。
我可以显示图像，但如果再次按下鼠标左键，旧图像将被删除。
这是我的代码
显示图像函数
{
Graphics graphics(hdc);
POINT pt;
GetCursorPos(&pt);
ScreenToClient(hWnd, &pt);
Image shot(L"RegularShots.png");
graphics.DrawImage(&shot, pt.x, pt.y);
}
鼠标左键按下
case WM_LBUTTONDOWN:
RegularShots=0;
InvalidateRect(hWnd, rect, false);
break;
wm_paint
case WM_PAINT:
hdc = BeginPaint(hWnd, &ps);
OnPaint(hdc, hWnd, 1);
if(RegularShots==0)
{
RegularShot(hdc, hWnd);
}
EndPaint(hWnd, &ps);
break;
有什么想法吗？
im trying to display image when left mouse button is down.
i can display the image but if the left mouse button is down again than the older image would be deleted.
here is my code
display image function
{
Graphics graphics(hdc);
POINT pt;
GetCursorPos(&pt);
ScreenToClient(hWnd, &pt);
Image shot(L"RegularShots.png");
graphics.DrawImage(&shot, pt.x, pt.y);
}
left mouse button down
case WM_LBUTTONDOWN:
RegularShots=0;
InvalidateRect(hWnd, rect, false);
break;
wm_paint
case WM_PAINT:
hdc = BeginPaint(hWnd, &ps);
OnPaint(hdc, hWnd, 1);
if(RegularShots==0)
{
RegularShot(hdc, hWnd);
}
EndPaint(hWnd, &ps);
break;
anyideas?
如果你对这篇内容有疑问，欢迎到本站社区发帖提问 参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。
绑定邮箱获取回复消息
由于您还没有绑定你的真实邮箱，如果其他用户或者作者回复了您的评论，将不能在第一时间通知您！
发布评论
评论（1）
您需要存储每次按下鼠标按钮时添加的坐标集合（数组/向量等） - 然后在 WM_PAINT 中渲染时，在每个位置绘制图像。
You need to store a collection (array / vector etc.) of coordinates that is added to each time the mouse button is pressed - and then when rendering in WM_PAINT, draw an image at each of these locations.