Le problème, c'est que je n'arrive pas à passer le paramètre concernant la couleur.
Code : Tout sélectionner
CmdTarget\Exec(?CGID_MSHTML, #IDM_FORECOLOR,#OLECMDEXECOPT_DONTPROMPTUSER, 0, 0)
Et la doc dit ça à propos de #IDM_FORECOLORHRESULT Exec(
const GUID *pguidCmdGroup, // Pointer to command group
DWORD nCmdID, // Identifier of command to execute
DWORD nCmdExecOpt, // Options for executing the command
VARIANTARG *pvaIn, // Pointer to input arguments
VARIANTARG *pvaOut // Pointer to command output
);
Parameters
pguidCmdGroup
[unique][in] Pointer to unique identifier of the command group; can be NULL to specify the standard group.
nCmdID
[in] The command to be executed. This command must belong to the group specified with pguidCmdGroup.
nCmdExecOpt
[in] Values taken from the OLECMDEXECOPT enumeration, which describe how the object should execute the command.
pvaIn
[unique][in] Pointer to a VARIANTARG structure containing input arguments. Can be NULL.
pvaOut
[unique][in,out] Pointer to a VARIANTARG structure to receive command output. Can be NULL.
Return Values
This method supports the standard return values E_FAIL and E_UNEXPECTED, as well as the following:
S_OK
The command was executed successfully.
OLECMDERR_E_UNKNOWNGROUP
The pguidCmdGroup parameter is not NULL but does not specify a recognized command group.
OLECMDERR_E_NOTSUPPORTED
The nCmdID parameter is not a valid command in the group identified by pguidCmdGroup.
OLECMDERR_E_DISABLED
The command identified by nCmdID is currently disabled and cannot be executed.
OLECMDERR_E_NOHELP
The caller has asked for help on the command identified by nCmdID, but no help is available.
OLECMDERR_E_CANCELED
The user canceled the execution of the command.
Remarks
The list of input and output arguments of a command and how they are packaged is unique to each command. Such information should be documented with the specification of the command group. (See the description of OLECMDID_ZOOM in the OLECMDID enumeration.) In the absence of any specific information the command is assumed to take no arguments and have no return value.
Notes to Callers
The pguidCmdGroup and nCmdID parameters together uniquely identify the command to invoke. The nCmdExecOpt parameter specifies the exact action to be taken. (See the OLECMDEXECOPT enumeration for more details.)
Most commands neither take arguments nor return values. For such commands, the caller can pass NULL in pvaIn and pvaOut. For commands that expect one or more input values, the caller can declare and initialize a VARIANTARG variable and pass a pointer to that variable in pvaIn. If the input to the command is a single value, the argument can be stored directly in the VARIANTARG structure and passed to the function. If the command expects multiple arguments, those arguments must be packaged appropriately within the VARIANTARG, using one of the supported types (such as IDispatch or SAFEARRAY).
If a command returns one or more arguments, the caller is expected to declare a VARIANTARG, initialize it to VT_EMPTY, and pass its address in pvaOut. If the command returns a single value, then the object can store that value directly in pvaOut. If the command has multiple output values, then it will package those in some way appropriate for the VARIANTARG.
Because pvaIn and pvOut are both caller-allocated, stack variables are permitted for both the caller and the object receiving the call. For commands that take zero or one argument on input and return zero or one value, no additional memory allocation is necessary. Most of the types supported by VARIANTARG do not require memory allocation. Exceptions include SAFEARRAY and BSTR.
Alors si quelqu'un a une idée, parce que moi, je sèche!Command group CGID_MSHTML (defined in mshtmhst.h)
Symbolic constant IDM_FORECOLOR
User interface None. Set nCmdExecOpt to OLECMDEXECOPT_DONTPROMPTUSER.
IOleCommandTarget::Exec parameters pvaIn VARIANT of type VT_BSTR or VT_I4 that specifies the new color. If pvaIn is a VT_BSTR, the value can be a color name or a string representing a six-digit hexadecimal RGB color value, with or without a leading hash mark, as defined in the Color Table. If pvaIn is a VT_I4, the value will be in interpreted as a COLORREF.
pvaOut VARIANT of type VT_I4 that receives a COLORREF value. If the current selection uses more than one foreground color, pvaOut will return a VARIANT of type VT_NULL. Set pvaIn to NULL to retrieve information to pvaOut.
Header file mshtmcid.h
Applies to IHTMLDocument2::execCommand, IHTMLDocument2::queryCommandEnabled, IHTMLDocument2::queryCommandIndeterm, IHTMLDocument2::queryCommandState, IHTMLDocument2::queryCommandSupported, IHTMLDocument2::queryCommandValue, IOleCommandTarget::Exec, IOleCommandTarget::QueryStatus.

Ca marche bien pour passer le texte en gras, en italique, en souligné, parce qu'il n'y a pas de paramètre à passer dans les deux dernières valeurs de la fonction, mais pour les couleurs... Nada!