Risk Lot Panel - indicator for MetaTrader 5

A display-only panel that answers one question before you place a trade: what lot size does my risk allow here, and what does the broker's volume step do to it?

For the current symbol the panel shows:

- the spread in points, and what that spread costs per 1.00 lot;

- the money value of one point per 1.00 lot, taken from the broker's tick value and tick size, so the figure is right on gold, indices and cross-rate pairs, not only on EURUSD;

- the broker's volume constraints: minimum, step and maximum;

- your risk budget: percent of balance, percent of equity, or a fixed amount in the account currency;

- the loss per 1.00 lot at the stop distance you set;

- the resulting lot — the raw figure, then the lot after rounding DOWN to the volume step, and the money you actually risk with that rounded lot;

Two situations the panel is really written for:

1. The raw lot comes out below the broker minimum. Rounding up to the minimum silently breaks the risk cap, which is how a "1% risk" trade quietly becomes a 4% one on a small account. The panel says the risk cannot be respected and shows what the minimum lot would actually risk, in money and in percent of balance.

2. Rounding down to the volume step moves the real risk away from the number you asked for. The panel prints the actual risk next to the requested one, and highlights the line when the gap is larger than 10%.

The indicator never places, modifies or closes an order. It only reads symbol and account information and draws labels on the chart.

Inputs: risk mode (percent of balance / percent of equity / fixed money), risk value, stop distance in points, and the panel's corner, offsets, font and colours.

Tested on MetaTrader 5 build 6182, compiles with 0 errors and 0 warnings.