Utiliser Panel de windows form avec HWND

**Mourad.lagh** · 02/07/2020, 11h52

Bonjour c'est mon première poste j'espère que j'aurai des réponses

je travail sur un projet, je dois créer une interface homme machine en windows form de Visual Studio j'ai besoin d'afficher des images, pour cela j'utilise un Panel, une fois j'appuie sur un Button je lance l'affichage des image, dans le fichier.h j'ai la fonction qui se lance une fois j'appuie sur le button, à l'interieur de ce dernier je lance une fichier.cpp la où je mis le traitement d'image et je veux ajouter l'affichage des image aussi, j'utilise la bibliothèque MIL de Matrox, il ont une fonction "MdispSelectWindow(UserHookDataPtr->Disp, ModifiedBufferId, monHandle);" pour l'affichage des résultats dans le troisième paramètre je dois mettre le Handle de mon panel où je veux afficher. pour créer le Handle j'utilise la méthode suivant :

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    HWND monHandle;
 
    monHandle = (HWND)panel1->Handle.ToPointer();
    MdispSelectWindow(UserHookDataPtr->Disp, ModifiedBufferId, monHandle);

mais j'ai une erreur, le "panel1" non défini, je sais pas comment le déclarer dans ce fichier.cpp, normalement il est déclaré dans le fichier.h, comment je peux l'utiliser dans le fichier.cpp ?
fichier.h

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#pragma once
#include <iostream>
 
 
namespace test {
 
    using namespace System;
    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 MyForm
    /// </summary>
    public ref class MyForm : public System::Windows::Forms::Form
    {
    public:
        MyForm(void)
        {
            InitializeComponent();
            //
            //TODO: ajoutez ici le code du constructeur
            //
        }
 
    public:
        /// <summary>
        /// Nettoyage des ressources utilisées.
        /// </summary>
        ~MyForm()
        {
            if (components)
            {
                delete components;
            }
        }
    public: System::Windows::Forms::Panel^ panel1;
    private: System::Windows::Forms::Button^ button1;
    private: System::Windows::Forms::Button^ button2;
    private: System::Windows::Forms::Panel^ panel2;
    protected:
 
    private:
        /// <summary>
        /// Variable nécessaire au concepteur.
        /// </summary>
        System::ComponentModel::Container ^components;
 
#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)
        {
            std::cout << "Hello world!" << std::endl;
            this->panel1 = (gcnew System::Windows::Forms::Panel());
            this->button1 = (gcnew System::Windows::Forms::Button());
            this->button2 = (gcnew System::Windows::Forms::Button());
            this->panel2 = (gcnew System::Windows::Forms::Panel());
            this->SuspendLayout();
            //
            // panel1
            //
            this->panel1->AccessibleDescription = L"pan";
            this->panel1->AccessibleName = L"pan";
            this->panel1->BackColor = System::Drawing::SystemColors::ControlDark;
            this->panel1->Location = System::Drawing::Point(385, 83);
            this->panel1->Name = L"panel1";
            this->panel1->Size = System::Drawing::Size(384, 273);
            this->panel1->TabIndex = 0;
            this->panel1->Paint += gcnew System::Windows::Forms::PaintEventHandler(this, &MyForm::panel1_Paint);
            //
            // button1
            //
            this->button1->Location = System::Drawing::Point(118, 155);
            this->button1->Name = L"button1";
            this->button1->Size = System::Drawing::Size(89, 32);
            this->button1->TabIndex = 1;
            this->button1->Text = L"scan code";
            this->button1->UseVisualStyleBackColor = true;
            this->button1->Click += gcnew System::EventHandler(this, &MyForm::button1_Click);
            //
            // button2
            //
            this->button2->Location = System::Drawing::Point(118, 219);
            this->button2->Name = L"button2";
            this->button2->Size = System::Drawing::Size(89, 34);
            this->button2->TabIndex = 2;
            this->button2->Text = L"test2";
            this->button2->UseVisualStyleBackColor = true;
            //
            // panel2
            //
            this->panel2->Location = System::Drawing::Point(926, 83);
            this->panel2->Name = L"panel2";
            this->panel2->Size = System::Drawing::Size(263, 198);
            this->panel2->TabIndex = 3;
            this->panel2->Paint += gcnew System::Windows::Forms::PaintEventHandler(this, &MyForm::panel2_Paint);
            //
            // MyForm
            //
            this->AutoScaleDimensions = System::Drawing::SizeF(8, 16);
            this->AutoScaleMode = System::Windows::Forms::AutoScaleMode::Font;
            this->ClientSize = System::Drawing::Size(1383, 548);
            this->Controls->Add(this->panel2);
            this->Controls->Add(this->button2);
            this->Controls->Add(this->button1);
            this->Controls->Add(this->panel1);
            this->Name = L"MyForm";
            this->Text = L"MyForm";
            this->ResumeLayout(false);
 
        }
#pragma endregion
    public: System::Void panel1_Paint(System::Object^ sender, System::Windows::Forms::PaintEventArgs^ e) {
 
 
 
 
    }
    private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) {
 
        int code(void);
            code();
 
    }
    private: System::Void panel2_Paint(System::Object^ sender, System::Windows::Forms::PaintEventArgs^ e) {
 
 
 
    }
};
}

fichier.cpp

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#include "mil.h"
#include <iostream>
#include <windows.h>
#include <string>
#include <iostream>
#include "MyForm.h"
 
#include <algorithm>
 
 
using namespace System;
using namespace std;
using namespace System::ComponentModel;
using namespace System::Collections;
using namespace System::Windows::Forms;
using namespace System::Data;
using namespace System::Drawing;
 
 
const MIL_INT32 NbFrames = 4;
 
// User's processing function hook data object
MIL_INT MFTYPE ProcessingFunction(MIL_INT HookType, MIL_ID HookId, void* HookDataPtr);
typedef struct
{
    MIL_ID Code_Context;
    MIL_ID Code_Result;
    MIL_ID Disp;
    MIL_ID McodeRead_Block_graphicContext;
    MIL_ID McodeRead_Block_graphicList;
} HookDataStruct;
 
int code(void)
{
    MIL_ID MilApplication = M_NULL;
    MIL_ID* GrabBuffers = new MIL_ID[NbFrames];
    MIL_INT Digsizex = 0;
    MIL_INT Digsizey = 0;
    MIL_INT Digsizeband = 0;
    MIL_INT Digtype = 0;
    MIL_ID Codemodel0 = M_NULL;
    MIL_ID MilSystem = M_NULL;
    MIL_ID AIMDPMGrading = M_NULL;
    MIL_ID Code_Context = M_NULL;
    MIL_ID Code_Result = M_NULL;
    MIL_ID Disp = M_NULL;
    MIL_ID McodeRead_Block_graphicContext = M_NULL;
    MIL_ID McodeRead_Block_graphicList = M_NULL;
    HookDataStruct UserHookData;
 
 
 
    /////////////////////////////
 
 
 
 
    /////////////////////////
 
 
 
    MappAlloc(M_NULL, M_DEFAULT, &MilApplication);
    MsysAlloc(M_DEFAULT, MIL_TEXT("M_SYSTEM_HOST"), M_DEFAULT, M_DEFAULT, &MilSystem);
    MdispAlloc(MilSystem, M_DEFAULT, MIL_TEXT("M_DEFAULT"), M_DEFAULT, &Disp);
 
    // Control Block for Disp
    MdispControl(Disp, M_TITLE, MIL_TEXT("Disp"));
 
    MdigAlloc(MilSystem, M_DEFAULT, MIL_TEXT("D:\\STPGroup\\Matrox\\MIL\\Matrox Imaging\\Images\\Full\\AIMDPMGrading"), M_DEFAULT, &AIMDPMGrading);
 
    // Post-Alloc Block for AIMDPMGrading
    MdigInquire(AIMDPMGrading, M_SIZE_X, &Digsizex);
    MdigInquire(AIMDPMGrading, M_SIZE_Y, &Digsizey);
    MdigInquire(AIMDPMGrading, M_SIZE_BAND, &Digsizeband);
    MdigInquire(AIMDPMGrading, M_TYPE, &Digtype);
 
    // MbufAllocColor loop
    for (int t = 0; t < NbFrames; t++)
    {
        GrabBuffers[t] = MbufAllocColor(MilSystem, Digsizeband, Digsizex, Digsizey, Digtype, M_IMAGE + M_PROC + M_GRAB + M_DISP, M_NULL);
    }
 
    MgraAlloc(MilSystem, &McodeRead_Block_graphicContext);
    MgraAllocList(MilSystem, M_DEFAULT, &McodeRead_Block_graphicList);
    McodeAlloc(MilSystem, M_DEFAULT, M_IMPROVED_RECOGNITION, &Code_Context);
 
    // Post-Alloc Block for Code Context
    McodeModel(Code_Context, M_ADD, M_DATAMATRIX, M_NULL, M_DEFAULT, &Codemodel0);
 
    McodeAllocResult(MilSystem, M_DEFAULT, &Code_Result);
 
    // Initialize the user's processing function data structure.
    UserHookData.Code_Context = Code_Context;
    UserHookData.Code_Result = Code_Result;
    UserHookData.Disp = Disp;
    UserHookData.McodeRead_Block_graphicContext = McodeRead_Block_graphicContext;
    UserHookData.McodeRead_Block_graphicList = McodeRead_Block_graphicList;
 
    // MdigProcess operation Block
    MdigProcess(AIMDPMGrading, GrabBuffers, NbFrames, M_START, M_ASYNCHRONOUS + M_REGION_DELETE_AT_EACH_FRAME, ProcessingFunction, &UserHookData);
    MosPrintf(MIL_TEXT("Press enter to stop grabbing\n"));
    MosGetch();
    MdigProcess(AIMDPMGrading, GrabBuffers, NbFrames, M_STOP, M_DEFAULT, ProcessingFunction, &UserHookData);
 
    MosPrintf(MIL_TEXT("Press <ENTER> to continue\n"));
    MosGetch();
 
    // MbufFree loop
    for (int t = 0; t < NbFrames; t++)
    {
        MbufFree(GrabBuffers[t]);
    }
 
    McodeFree(Code_Result);
    McodeFree(Code_Context);
    MgraFree(McodeRead_Block_graphicList);
    MgraFree(McodeRead_Block_graphicContext);
    MdigFree(AIMDPMGrading);
    MdispFree(Disp);
    MsysFree(MilSystem);
    MappFree(MilApplication);
 
    delete[] GrabBuffers;
 
    return 0;
}
 
// User's processing function called every time a grab buffer is ready.
MIL_INT MFTYPE ProcessingFunction(MIL_INT /*HookType*/, MIL_ID HookId, void* HookDataPtr)
{
    MIL_TEXT_CHAR* String0 = 0;
    MIL_DOUBLE CodeType = 0.0;
    MIL_INT Stringsize9 = 0;
    MIL_DOUBLE Score = 0.0;
    MIL_TEXT_CHAR* EscapeSequence = 0;
    MIL_INT Stringsize10 = 0;
    MIL_DOUBLE EscapeSequenceStringSize = 0.0;
    HookDataStruct* UserHookDataPtr = (HookDataStruct*)HookDataPtr;
    MIL_ID ModifiedBufferId;
 
    // Retrieve the MIL_ID of the grabbed buffer.
    MdigGetHookInfo(HookId, M_MODIFIED_BUFFER + M_BUFFER_ID, &ModifiedBufferId);
    McodeRead(UserHookDataPtr->Code_Context, ModifiedBufferId, UserHookDataPtr->Code_Result);
 
    // Display Block for McodeRead Block
    MgraControl(UserHookDataPtr->McodeRead_Block_graphicContext, M_COLOR, M_COLOR_GREEN);
    McodeDraw(UserHookDataPtr->McodeRead_Block_graphicContext, UserHookDataPtr->Code_Result, UserHookDataPtr->McodeRead_Block_graphicList, M_DRAW_BOX, M_DEFAULT, M_DEFAULT);
    MdispControl(UserHookDataPtr->Disp, M_ASSOCIATED_GRAPHIC_LIST_ID, UserHookDataPtr->McodeRead_Block_graphicList);
    MgraControl(UserHookDataPtr->McodeRead_Block_graphicContext, M_FIXTURE, M_USE_SOURCE_FIRST);
 
    ////////////////////////////////////////////////////////////////////////////////////////
 
    //private: System::Windows::Forms::Panel^ panel1;
    //void InitializeComponent();
 
    //System::Void panel1_Paint(System::Object ^ sender, System::Windows::Forms::PaintEventArgs ^ e);
    //System::Windows::Forms::Panel^ panel1;
    //void panel1();
 
    HWND monHandle;
 
    monHandle = (HWND)panel1->Handle.ToPointer();
    MdispSelectWindow(UserHookDataPtr->Disp, ModifiedBufferId, monHandle);
 
    //MdispSelectWindow(UserHookDataPtr->Disp, ModifiedBufferId, M_NULL);
 
 
 
    McodeGetResultSingle(UserHookDataPtr->Code_Result, 0, M_STRING + M_STRING_SIZE + M_TYPE_MIL_INT, &Stringsize9);
    if (Stringsize9 > 1)
    {
        String0 = new MIL_TEXT_CHAR[Stringsize9];
        McodeGetResultSingle(UserHookDataPtr->Code_Result, 0, M_STRING, String0);
    }
    McodeGetResultSingle(UserHookDataPtr->Code_Result, 0, M_CODE_TYPE + M_TYPE_MIL_DOUBLE, &CodeType);
    McodeGetResultSingle(UserHookDataPtr->Code_Result, 0, M_SCORE + M_TYPE_MIL_DOUBLE, &Score);
    McodeGetResultSingle(UserHookDataPtr->Code_Result, 0, M_STRING + M_ESCAPE_SEQUENCE + M_STRING_SIZE + M_TYPE_MIL_INT, &Stringsize10);
    if (Stringsize10 > 1)
    {
        EscapeSequence = new MIL_TEXT_CHAR[Stringsize10];
        McodeGetResultSingle(UserHookDataPtr->Code_Result, 0, M_STRING + M_ESCAPE_SEQUENCE, EscapeSequence);
    }
    McodeGetResultSingle(UserHookDataPtr->Code_Result, 0, M_STRING + M_ESCAPE_SEQUENCE + M_STRING_SIZE + M_TYPE_MIL_DOUBLE, &EscapeSequenceStringSize);
 
    std::cout << "type de code : " << CodeType << std::endl;
    std::cout << "String : " << String0 << std::endl;
    std::cout << "Score : " << Score << std::endl;
    std::cout << "EscapeSequence : " << EscapeSequence << std::endl;
    std::cout << "EscapeSequenceStringSize : " << EscapeSequenceStringSize << std::endl;
 
    //String^ str3 = gcnew String(String0);
    //string ini = System::Convert::ToBase64String(String0);
 
    //std::cout << "Score : " << str3 << std::endl;
 
 
 
    Sleep(2000);
 
 
    MgraClear(UserHookDataPtr->McodeRead_Block_graphicContext, UserHookDataPtr->McodeRead_Block_graphicList);
 
    delete[] String0;
    delete[] EscapeSequence;
    return 0;
}

**Médinoc** · 07/07/2020, 09h39

Bonjour,
HookDataStruct est une structure que tu contrôles (ou contient un pointeur vers une structure que tu contrôles) ? Si oui, le plus simple, c'est que ta fonction code() prenne directement le HWND en paramètre et le mette dans la HookDataStruct.

Utiliser Panel de windows form avec HWND

Langage C++

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