Bonjour,

En Visual C++ 2008 express, je tente de faire un form contenant un controle textbox affichant les String lus sur un lien serie grace au composant SerialPort.

Apres avoir naviguer un moment dans les forums:
  • Evidemment ce n'est pas si simple car il faut Invoke le thread de form a partir du thread gerant l'evenement SerialDataReceivedEventHandler.
  • Mais je ne parviens toujours pas a invoke correctement la fonction delegate a cause des parametres:
    error C3352: 'void testForms::Form1::ChangeLabelText(System::String ^)'*: la fonction spécifiée est incompatible avec le type délégué 'void (System::String ^)'


Help please:

Code : Sélectionner tout - Visualiser dans une fenêtre à part
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
#pragma once


namespace testForms {

	using namespace System;
	using namespace System::Diagnostics;
	using namespace System::ComponentModel;
	using namespace System::Collections;
	using namespace System::Windows::Forms;
	using namespace System::Data;
	using namespace System::Drawing;

	/// <summary>
	/// Description résumée de Form1
	///
	/// AVERTISSEMENT*: si vous modifiez le nom de cette classe, vous devrez modifier la
	///          propriété 'Nom du fichier de ressources' de l'outil de compilation de ressource managée
	///          pour tous les fichiers .resx dont dépend cette classe. Dans le cas contraire,
	///          les concepteurs ne pourront pas interagir correctement avec les ressources
	///          localisées associées à ce formulaire.
	/// </summary>
	public ref class Form1 : public System::Windows::Forms::Form
	{
	public:
		Form1(void)
		{
			InitializeComponent();
			//
			//TODO*: ajoutez ici le code du constructeur
			//
		}

	protected:
		/// <summary>
		/// Nettoyage des ressources utilisées.
		/// </summary>
		~Form1()
		{
			if (components)
			{
				delete components;
			}
		}
	private: System::Windows::Forms::Button^  OKButton;
	private: System::IO::Ports::SerialPort^  serialPort1;
	private: System::Windows::Forms::TextBox^  textBox1;
	private: System::Windows::Forms::Button^  button1;
	private: System::Windows::Forms::TextBox^  textBox2;
	private: System::Windows::Forms::Button^  button2;
	private: System::Windows::Forms::TextBox^  textBox3;
	private: System::ComponentModel::IContainer^  components;
	protected: 

	protected: 

	private:
		/// <summary>
		/// Variable nécessaire au concepteur.
		/// </summary>


#pragma region Windows Form Designer generated code
		/// <summary>
		/// Méthode requise pour la prise en charge du concepteur - ne modifiez pas
		/// le contenu de cette méthode avec l'éditeur de code.
		/// </summary>
		void InitializeComponent(void)
		{
			this->components = (gcnew System::ComponentModel::Container());
			this->OKButton = (gcnew System::Windows::Forms::Button());
			this->serialPort1 = (gcnew System::IO::Ports::SerialPort(this->components));
			this->textBox1 = (gcnew System::Windows::Forms::TextBox());
			this->button1 = (gcnew System::Windows::Forms::Button());
			this->textBox2 = (gcnew System::Windows::Forms::TextBox());
			this->button2 = (gcnew System::Windows::Forms::Button());
			this->textBox3 = (gcnew System::Windows::Forms::TextBox());
			this->SuspendLayout();
			// 
			// OKButton
			// 
			this->OKButton->Location = System::Drawing::Point(29, 12);
			this->OKButton->Name = L"OKButton";
			this->OKButton->Size = System::Drawing::Size(75, 23);
			this->OKButton->TabIndex = 0;
			this->OKButton->Text = L"Open";
			this->OKButton->UseVisualStyleBackColor = true;
			this->OKButton->Click += gcnew System::EventHandler(this, &Form1::OKButton_Click);
			// 
			// serialPort1
			// 
			this->serialPort1->DataReceived += gcnew System::IO::Ports::SerialDataReceivedEventHandler(this, &Form1::serialPort1_DataReceived);
			// 
			// textBox1
			// 
			this->textBox1->Location = System::Drawing::Point(29, 46);
			this->textBox1->Multiline = true;
			this->textBox1->Name = L"textBox1";
			this->textBox1->Size = System::Drawing::Size(228, 95);
			this->textBox1->TabIndex = 1;
			// 
			// button1
			// 
			this->button1->Location = System::Drawing::Point(121, 13);
			this->button1->Name = L"button1";
			this->button1->Size = System::Drawing::Size(75, 23);
			this->button1->TabIndex = 2;
			this->button1->Text = L"Close";
			this->button1->UseVisualStyleBackColor = true;
			this->button1->Click += gcnew System::EventHandler(this, &Form1::button1_Click);
			// 
			// textBox2
			// 
			this->textBox2->Location = System::Drawing::Point(29, 165);
			this->textBox2->Name = L"textBox2";
			this->textBox2->Size = System::Drawing::Size(228, 20);
			this->textBox2->TabIndex = 3;
			// 
			// button2
			// 
			this->button2->Location = System::Drawing::Point(29, 191);
			this->button2->Name = L"button2";
			this->button2->Size = System::Drawing::Size(75, 23);
			this->button2->TabIndex = 4;
			this->button2->Text = L"Send";
			this->button2->UseVisualStyleBackColor = true;
			this->button2->Click += gcnew System::EventHandler(this, &Form1::button2_Click);
			// 
			// textBox3
			// 
			this->textBox3->Location = System::Drawing::Point(29, 234);
			this->textBox3->Name = L"textBox3";
			this->textBox3->Size = System::Drawing::Size(228, 20);
			this->textBox3->TabIndex = 5;
			// 
			// Form1
			// 
			this->AutoScaleDimensions = System::Drawing::SizeF(6, 13);
			this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
			this->ClientSize = System::Drawing::Size(292, 266);
			this->Controls->Add(this->textBox3);
			this->Controls->Add(this->button2);
			this->Controls->Add(this->textBox2);
			this->Controls->Add(this->button1);
			this->Controls->Add(this->textBox1);
			this->Controls->Add(this->OKButton);
			this->Name = L"Form1";
			this->Text = L"Form1";
			this->ResumeLayout(false);
			this->PerformLayout();

		}
#pragma endregion
	private: delegate System::Void ChangeLabel( System::String^ str); 

	private: System::Void ChangeLabelText( System::String^ str)
    {
		this->textBox1->Text = str;   
    }

	private: System::Void OKButton_Click(System::Object^  sender, System::EventArgs^  e) {
				if ( ! this->serialPort1->IsOpen )
				{
					try
					{
						 this->serialPort1->PortName = "COM3";
						 this->serialPort1->BaudRate = 115200;
						 this->serialPort1->DataBits = 8;
                         this->serialPort1->Parity = System::IO::Ports::Parity::None; // no parity
                         this->serialPort1->StopBits = System::IO::Ports::StopBits::One; // 1 bit stop
                         //this->serialPort1->Handshake = System::IO::Ports::Handshake::None; // no flow control
                         this->serialPort1->Handshake = System::IO::Ports::Handshake::RequestToSend; // hardware flow control (RTS/CTS)

						 this->serialPort1->Open();
					}
					catch (char * str ) 
					{ 
						String ^cstr = gcnew String(str);
						this->textBox3->Text = cstr;
						Debug::WriteLine( "Error in Port Opening");

					}
					Debug::WriteLine( "Port Open");

				}
				else
				{
					Debug::WriteLine( "Port Deja Open");
					this->textBox3->Text = "Deja Open";
				}

			 }
	private: System::Void serialPort1_DataReceived(System::Object^  sender, System::IO::Ports::SerialDataReceivedEventArgs^  e) {
				System::String^ AnswerStr = this->serialPort1->ReadExisting();
				array<Object^>^myStringArray = gcnew array<Object^>(1);
				myStringArray[ 0 ] = AnswerStr;

				this->Invoke(gcnew ChangeLabel(&testForms::Form1::ChangeLabelText),  myStringArray);
// error C3352: 'void testForms::Form1::ChangeLabelText(System::String ^)'*: la fonction spécifiée est incompatible avec le type délégué 'void (System::String ^)'

				Debug::WriteLine( AnswerStr);

			 }
	private: System::Void button1_Click(System::Object^  sender, System::EventArgs^  e) {
				 if ( this->serialPort1->IsOpen )
				 {
					 this->serialPort1->Close();
				 }
			 }
private: System::Void button2_Click(System::Object^  sender, System::EventArgs^  e) {
			 if ( this->serialPort1->IsOpen )
			 {
				 this->serialPort1->WriteLine( this->textBox2->Text );
			 }


		 }
};
}