virtual void CBCGPCalculator::OnUserCommand ( UINT  uiCmd )

protectedvirtual

Called when the user presses a custom button.

If you have called SetAdditionalCommands() with a list of custom commands, you have to override OnUserCommand() in a derived class.

uiCmd contains a command ID which is assigned to a button. Command IDs are assigned automatically starting from CBCGPCalculator::idCommandUser and conform to the order of strings you passed in the string list when called SetAdditionalCommands().

Parameters

uiCmd

Specifies the command ID.

The code below enables calculator button with additional commands:

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CStringList lstCommands;

lstCommands.AddTail("Sin");

lstCommands.AddTail("Cos");

lstCommands.AddTail("Tan");

SetAdditionalCommands(&lstCommands);

The code below shows how to implement OnUserCommand:

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double dblVal = pCalculator->GetValue();

switch (uiCmd)

{

case CBCGPCalculator::idCommandUser: // Sin

dblVal = sin(dblVal);

break;

case CBCGPCalculator::idCommandUser + 1: // Cos

dblVal = cos(dblVal);

break;

case CBCGPCalculator::idCommandUser + 2: // Tan

dblVal = tan (dblVal);

break;

}